[Bug 988799]
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[Bug 988799]
https://immiguy.com/ Mp3 Download: David & Nicole Binion ft. Todd Dulaney – Faith Sees + Video -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
Download free movies Https://nigeriantvseries.com -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
My brother has apparently been having the same problem on his computer. I hadn't realized it when I submitted my bug. For him, he has an ICH8 family of chipsets. The following works for him, and the problem goes away while accessing his website https://beatplaza.com. echo anticipatory > /sys/block/sda/queue/scheduler Looks like this may be a tough one to nail down, because everyone's symptoms are slightly different. I'm wondering if perhaps there are multiple issues going on here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
https://jessynaija.org/mp3-download/naija-songs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
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[Bug 988799]
https://sportinfo.com.ng/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
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[Bug 988799]
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[Bug 988799]
Great Info I Love ThIs Post And I'll Like To Share It With my Pals Too https://legitsong.com that's my personal blog Incase you wish to know where I found kernel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
(In reply to Vesselin Kostadinov from comment #547) > This seems to be a hardware related issue, at least in some cases. > Can the other people experiencing it confirm whether they have a WD Greed > hard disk? > Google search for "wd15eads firmware" reveals quite a few people having > similar problems. > I have one of these hard disks and I was using it on a fanless VIA Samuel 2 > (pre-686) CPU and I was seeing the high IOWait problem and associated poor > performance. When I put the same hard disk in a dual AMD opteron it had the > same problem. > Then I did a full backup and restore on a different hard disk. It is the > same debian system on the same VIA cpu but now the high IOWait times are > gone and the performance is adequate for the CPU. > I should point out that the kernel should not suffer poor overall > performance during disk I/O even on flakey hardware, especially with swap > disabled. > The offending hard disk is now blanked. I can run a few tests with it if > somebody is interested. http://pestclue.com/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
This is a very unique way of getting it right. https://pestclue.com/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
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[Bug 988799]
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[Bug 988799]
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[Bug 988799]
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[Bug 988799]
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[Bug 988799]
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[Bug 988799] Re: Precise freezes under heavy i/o
** Tags added: cscc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
What's the value of `vm.dirty_writeback_centisecs` ?, ie. $ sysctl vm.dirty_writeback_centisecs try setting it to 0 to disable it, ie. `$ sudo sysctl -w vm.dirty_writeback_centisecs=0` I found that this helps my network transfer not stall/stop at all(for a few seconds when that is =1000 for example) while some kinda of non- async `sync`(command)-like flushing is going on periodically while transferring GiB of data files from sftp to SSD!(via Midnight Commander, on a link limited to 10MiB per second) vm.dirty_writeback_centisecs is how often the pdflush/flush/kdmflush processes wake up and check to see if work needs to be done. Coupled with the above I've been using another value: `vm.dirty_expire_centisecs=1000` for both cases (when stall and not stall), so this one remained fixed to =1000. vm.dirty_expire_centisecs is how long something can be in cache before it needs to be written. In this case it's 1 seconds. When the pdflush/flush/kdmflush processes kick in they will check to see how old a dirty page is, and if it's older than this value it'll be written asynchronously to disk. Since holding a dirty page in memory is unsafe this is also a safeguard against data loss. Well, with the above, at least I'm not experiencing network stalls when copying GiB of data via Midnight Commander's sftp to my SSD until some kernel-caused sync-ing is completed in the background. I don't know if this will work for others, but if curious about any of my other (sysctl)settings, they should be available for perusing [here](https://github.com/howaboutsynergy/q1q/tree/0a2cd4ba658067140d3f0ae89a0897af54da52a4/OSes/archlinux/etc/sysctl.d) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
correction: > In this case it's 1 seconds. *In this case it's 10 seconds. Also, heads up: I found that 'tlp' in `/etc/default/tlp`, on ArchLinux, will overwrite the values set in `/etc/sysctl.d/*.conf` files if these are set to non `0`, ie. MAX_LOST_WORK_SECS_ON_AC=10 MAX_LOST_WORK_SECS_ON_BAT=10 will set: vm.dirty_expire_centisecs=1000 vm.dirty_writeback_centisecs=1000 regardless of what values you set them in `/etc/sysctl.d/*.conf` files. /etc/default/tlp is owned by tlp 1.2.2-1 Not setting those (eg. commenting them out) will have tlp set the to its default of 15 sec (aka =1500). So the workaround is to set them to =0 which makes tlp not set them at all, thus the values from `/etc/sysctl.d/*.conf` files is allowed to remain as set. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
Had this again 20 minutes ago. Was dopying 8.7GiB of data from one directory to another directory on the same filesystem (ext4 (rw,relatime,data=ordered)) on the same disk (Western Digital WDC WD30EZRX-00D8PB0 spinning metal disk). The KDE UI became unresponsive (Everything other than /home and user data in on a SSD), could not launch any new applications. Opening a new tab on Firefox to go to Youtube didnt load the page, and kept saying waiting for youtube.com in the status bar (network gets halted?). dmesg shows these, are they important? [25013.905943] INFO: task DOMCacheThread:17496 blocked for more than 120 seconds. [25013.905945] Tainted: P OE4.15.0-54-generic #58-Ubuntu [25013.905947] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [25013.905949] DOMCacheThread D0 17496 2243 0x [25013.905951] Call Trace: [25013.905954] __schedule+0x291/0x8a0 [25013.905957] schedule+0x2c/0x80 [25013.905959] jbd2_log_wait_commit+0xb0/0x120 [25013.905962] ? wait_woken+0x80/0x80 [25013.905965] __jbd2_journal_force_commit+0x61/0xb0 [25013.905967] jbd2_journal_force_commit+0x21/0x30 [25013.905970] ext4_force_commit+0x29/0x2d [25013.905972] ext4_sync_file+0x14a/0x3b0 [25013.905975] vfs_fsync_range+0x51/0xb0 [25013.905977] do_fsync+0x3d/0x70 [25013.905980] SyS_fsync+0x10/0x20 [25013.905982] do_syscall_64+0x73/0x130 [25013.905985] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [25013.905987] RIP: 0033:0x7fc9cb839b07 [25013.905988] RSP: 002b:7fc9a7aeb200 EFLAGS: 0293 ORIG_RAX: 004a [25013.905990] RAX: ffda RBX: 00a0 RCX: 7fc9cb839b07 [25013.905992] RDX: RSI: 7fc9a7aeaff0 RDI: 00a0 [25013.905993] RBP: R08: R09: 72732f656d6f682f [25013.905994] R10: R11: 0293 R12: 01f6 [25013.905995] R13: 7fc97fc5d038 R14: 7fc9a7aeb340 R15: 7fc987523380 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
KDE have problem too, same copy via CLI or via Ultracopier (GUI) have no problem. I note too KDE have UI more slow, plasma doing CPU usage in case I use the HDD... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Bug watch added: trac.filezilla-project.org/ #11710 http://trac.filezilla-project.org/ticket/11710 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
According to my attempts to fix this bug, I totally disagree with you. This bug is caused by pure design of current block dev layer. Methods which are good to develop code is absolutely improper for developing ideas. It's probably the key problem of the Linux Comunity. Currently, there is merged WA for block devices with a good queue such as Samsung Pro NVMe. WBR, Vitaly (In reply to _Vi from comment #665) > As far as I understand, this is kind of meta-bug: there are multiple causes > and multiple fixes. > > "I do bulk IO and it gets slow" sounds rather general, and problem that can > resurface anytime due to some new underlying issue. So the problem cannot be > really "closed for good" no matter how much technical progress is made. > > For me 12309 basically stopped happening unless I deliberately tune > "/proc/sys/vm/dirty_*" values to non-typical ranges and forgot to revert > them back. I see system controllably slowing down processes doing bulk IO so > the system in general stays reasonable. This behaviour is one of outcomes of > this bug. > > I don't expect meaningful technical discussion to be happen in this thread. > It should just serve as a hub for linking to specific new issues. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
amzing website, love it. great work done. Thanx for sharing with us, keep postings https://my-notron.com/ https://retailcardactivation.com/ http://redeem-office.com/setup/ http://notronnorton.com/ http://enmcafee.com/ http://pagenorton.com/setup/ https://code.videolan.org/snippets/984 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
https://gfycat.com/@Luciamandela/manage/ https://giphy.com/channel/luciamandela https://myanimelist.net/profile/Luciamandela https://www.programmableweb.com/profile/marconixon70 https://www.flipsnack.com/LuciaMandela/ https://www.f6s.com/luciamandela https://cycling74.com/author/5b96accb4355fd166ae407fd http://fanninhillfarm.com/users/lucia https://github.com/Marconixon70?tab=projects https://gitlab.com/luciamandela55?nav_source=navbar https://stackoverflow.com/users/10138910/lucia-mandela?tab=profile https://gitlab.cs.ksu.edu/luciamandela https://uhhepvcs.phys.hawaii.edu/luciamandela https://hackerone.com/luciamandela https://gitlab.gnome.org/snippets/795 https://gitlab.hamburg.ccc.de/snippets/3 https://gitlab.haskell.org/snippets/1456 http://www.lg102-ciscvaio1.cs.hku.hk/snippets/42 https://gitlab.switch.ch/snippets/96 https://emulation-general.fandom.com/wiki/Message_Wall:Luciamandela121 https://www.meetup.com/members/260721144/ https://trac.filezilla-project.org/ticket/11710#comment:24 https://www.meetup.com/members/260721144/ https://catchthemes.com/support-forum/users/luciamandela/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799]
Can 'someone' please open a bounty on creation of a VM test case, f.e. with `vagrant` or `phoronix test suite`? Basically, a way to reproduce and quantify the perceived/actual performance difference between > Linux 2.6.17 Released 17 June, 2006 and > Linux 5.0 Released Sun, 3 Mar 2019 … (In reply to Alex Efros from comment #666) > Not as bad as years ago […] > And that's on powerful and modern enough system with > kernel 4.19.27, CPU i7-2600K @ 4.5GHz, RAM 24GB, and HDD 3TB […] > This is annoying, and I remember time before > 12309 when rtorrent without any throttling won't make mplayer to freeze on > less powerful hardware. Oh yeah, this... i can clearly remember back then when on a then mid- range machine with a lot of compiling (gentoo => 100% cpu �[U+1F923]�) and filesystem work, VLC used to play an HD video stream even under heavy load without any hiccups and micro-stuttering.. It was impressive at the time.. and then.. it broke �[U+1F928]� -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Changed in: linux (Ubuntu) Status: Incomplete = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Changed in: linux Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Seeing the same problem here on a desktop machine when doing dd of 40GB image. Couldn't log in via ssh until dd was finished. This was repeated in dmesg every 120 seconds: [ 2520.696276] INFO: task ionice:2393 blocked for more than 120 seconds. Colin: your suggestion echo 10 | sudo tee /proc/sys/vm/dirty_ratio Seems to have fixed the problem for me. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Gema, can you run the dd or vm creation using ionice -c 3 and see if this helps or not, e.g. ionice -c 3 dd if=/dev/zero of=test.img bs=1M count=2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Bug watch added: Linux Kernel Bug Tracker #12309 http://bugzilla.kernel.org/show_bug.cgi?id=12309 ** Also affects: linux via http://bugzilla.kernel.org/show_bug.cgi?id=12309 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Changed in: linux Status: Unknown = Confirmed ** Changed in: linux Importance: Unknown = High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
@Gema, I've now been able to reproduce this. I've found that the following helps reduce the problem on my desktop: echo 10 | sudo tee /proc/sys/vm/dirty_ratio Can you try this and let me know if this helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] [NEW] Precise freezes under heavy i/o
Public bug reported: Whilst creating a VM with 20 GB persistent HD and my system froze until the disk was created. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-23-generic 3.2.0-23.36 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 NonfreeKernelModules: fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC2: gema 2526 F pulseaudio /dev/snd/controlC0: gema 2526 F pulseaudio /dev/snd/controlC1: gema 2526 F pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfbaf8000 irq 52' Mixer name : 'VIA VT1708S' Components : 'HDA:11060397,104383c4,0010' Controls : 45 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'U0x46d0x81d'/'USB Device 0x46d:0x81d at usb-:00:1d.0-1.3, high speed' Mixer name : 'USB Mixer' Components : 'USB046d:081d' Controls : 2 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum Capture channels: Mono Limits: Capture 0 - 16 Mono: Capture 12 [75%] [24.00dB] [on] Card2.Amixer.info: Card hw:2 'Generic'/'HD-Audio Generic at 0xfbbfc000 irq 53' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100200' Controls : 6 Simple ctrls : 1 Card2.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Thu Apr 26 11:59:11 2012 HibernationDevice: RESUME=UUID=f32abdd2-8167-48c2-9d93-61eeb2632ca0 InstallationMedia: Ubuntu 11.04 Natty Narwhal - Release amd64 (20110427.1) IwConfig: lono wireless extensions. virbr0no wireless extensions. eth0 no wireless extensions. MachineType: System manufacturer System Product Name ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, user) LANG=en_GB.UTF-8 SHELL=/bin/zsh ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=109d1e55-4f64-489e-91e8-48ff46f6ba16 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-23-generic N/A linux-backports-modules-3.2.0-23-generic N/A linux-firmware1.79 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to precise on 2012-04-25 (0 days ago) dmi.bios.date: 03/26/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0401 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P7P55D-E LX dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0401:bd03/26/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7P55D-ELX:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug precise qa-manual-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Couple of questions to get an idea about your machine: 1 which tools are you using to create a VM, and how. 2. how fast is your HDD? use the following and run 3 times, please supply the results to the bug. sudo hdparm -t /dev/sda sudo hdparm -T /dev/sda 3. Please run: vmstat 1 vmstat.log and then reproduce the bug. Then stop vmstat and attach the log to the bug. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
disables this message. [38319.565909] Chrome_FileThre D 81806240 0 6319 1 0x [38319.565914] 88021550de48 0082 88021550de00 00030001 [38319.565919] 88021550dfd8 88021550dfd8 88021550dfd8 00013780 [38319.565924] 8802322616f0 8801e06b5bc0 88021550de58 880231c99800 [38319.565929] Call Trace: [38319.565933] [8165a55f] schedule+0x3f/0x60 [38319.565937] [81265085] jbd2_log_wait_commit+0xb5/0x130 [38319.565941] [8108aec0] ? add_wait_queue+0x60/0x60 [38319.565945] [812111b8] ext4_sync_file+0x208/0x2d0 [38319.565948] [81177c90] ? vfs_write+0x110/0x180 [38319.565953] [811a6406] do_fsync+0x56/0x80 [38319.565957] [811a6730] sys_fsync+0x10/0x20 [38319.565961] [81664a82] system_call_fastpath+0x16/0x1b ** Tags added: qa-manual-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Changed in: linux (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
1 which tools are you using to create a VM, and how. I am using Virtual Box, adding a New VM, I give it a name, OS Type: linux + ubuntu, memory 2048 MB, startup disk, Create a new hard disk, vdi (virtualbox disk image), *fixed size*, location default, Size 30 GB, and then create. After a few moments (when it starts to actually write to disk) windows start to fade and become unresponsive (firefox, for instance). 2. how fast is your HDD? use the following and run 3 times, please supply the results to the bug. * sudo hdparm -t /dev/sda 12:17:48 gema-pc:~ 22 % sudo hdparm -t /dev/sda [sudo] password for gema: /dev/sda: Timing buffered disk reads: 292 MB in 3.01 seconds = 96.96 MB/sec 12:21:34 gema-pc:~ % sudo hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 332 MB in 3.02 seconds = 110.02 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -t /dev/sda 12:21:45 gema-pc:~ 134 % sudo hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 330 MB in 3.01 seconds = 109.53 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -t /dev/sda * sudo hdparm -T /dev/sda 12:21:57 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 17924 MB in 2.00 seconds = 8971.27 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.69s=0.14s+1.86s 12:22:39 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 18294 MB in 2.00 seconds = 9156.27 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.78s=0.12s+1.90s 12:22:51 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 18472 MB in 2.00 seconds = 9245.14 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.24s=0.16s+1.86s I wasn't sure if you'd be interested in the errors, so I copied the whole output 3. Please run: vmstat 1 vmstat.log attached vmstat.log after 5 mins of freeze, the machine came back again. I wrote the vmstat.log to a different drive, just to be sure. ** Attachment added: vmstat.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+attachment/3104713/+files/vmstat.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
So, I suspect we have some conflicting requirements for the I/O operations which aren't helping here. If you are running firefox I suspect it may be issuing occasional fsync() calls which isn't helping. My current hypothesis is that the virtual memory tuneables may need tweaking to match your memory + drive configuration. I suspect the memory is filling up with lots of dirty pages from the huge amounts of writes from the dd or VM image creation. When the kernel hits the dirty page ration limit dirty buffers are forced to be written out to disk and this blocks the writing processes. Unfortunately with processes that do a lot of writing we get a write-hog situation that can block I/O for all other processes. Linux normally tries to buffer as much as it can to improve efficiency, however, this causes problems with heavy I/O writers and for other processes that need to do I/O and perhaps the occational fsync() (such as firefox). If there is a lot of data in the buffer cache the system can freeze while sync'ing data. So, we may need to adjust the virtual memory (vm) settings to for your use-case (e.g. lots of dirty writes, lots of memory, relatively fast HDD). So, things to try: 1. Reduce the vm dirty_background_ratio to a lower value. I think our aim here is to reduce the amount of data Linux keeps cached so that it writes it more consistently to the disk. The default setting is 40 (40% of memory), so lets reduce this to 20 and see if this helps. To do so use: echo 20 | sudo tee /proc/sys/vm/dirty_background_ratio 2. Reduce the vm dirty_ratio. If you have applications that are OK with their writes being blocked altogether (such as dd or creating a huge VM image) then this may help too. The default is 60 (60% of memory), so try reducing this to say 30%. To do su use: echo 30 | sudo tee /proc/sys/vm/dirty_ratio One more thing, I believe VirtualBox allows you to create dynamically sized images that grow over time which is more space efficient than creating a huge pre-allocated image in the first place. This will reduce the image creation time, reduce the I/O blocking issue on image creation, and also save space too. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Please try the above advice and let me know if it helps. I've experimented with these on a couple of machines and I see some improvement. ** Changed in: linux (Ubuntu) Status: Confirmed = Incomplete ** Changed in: linux (Ubuntu) Importance: Undecided = Low ** Changed in: linux (Ubuntu) Importance: Low = Medium ** Changed in: linux (Ubuntu) Assignee: (unassigned) = Colin King (colin-king) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
** Tags added: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
OK, so I hadn't realized the machine was a desktop, hence the vm settings are fairly low anyhow, so we shall scrub that idea above. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Can you try: echo deadline | sudo tee /sys/block/sda/queue/scheduler and see if that helps with interactivity while doing the heavy write I/O activity. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
Sorry, 3.0.0-17generic, rather -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 988799] Re: Precise freezes under heavy i/o
I tried this, and didn't help the i/o activity. I have also tried my old oneiric kernel, 3.0.0-19generic33, and it does exactly the same thing. But I had never seen this problem before, so maybe it is not in the kernel but in some user-side configuration? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
