** Changed in: linux (Ubuntu)
Assignee: Jim Lieb (lieb) = (unassigned)
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https://bugs.launchpad.net/bugs/343371
Title:
Very poor desktop response (high latency) during I/O-load
This bug affects me (10.10, 64bit) and has done so for a long time (at
least 2 releases).
When having many tabs opened in google chrome (swap), compiling large
projects or updating git repositories which requires disk-io, system
becomes unusable (may take 15-200 seconds for mouse pointer to move
Looking at the attachments in this bug report, I noticed that lspci
-vv was flagged as a patch. A patch contains changes to an Ubuntu
package that will resolve a bug, since this was not one I've unchecked
the patch flag for it. In the future keep in mind the definition of a
patch. You can learn
I'll be adding some test results for Ubuntu Lucid here, as soon as I can
find some time.
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you are a member of Ubuntu
Bugs, which is
Laurent Duchesne l...@urent.org writes:
I can confirm I had the same problem with 2.6.31-18 (ICH7 chipset).
After following these instructions to upgrade the kernel to 2.6.32,
everything works fine:
http://www.ramoonus.nl/2009/12/03/linux-kernel-2-6-32-installation-guide-for-ubuntu-linux/
Thank you for the tip, I will try kernel 2.6.32.3 from the Ubuntu kernel
team's mainline-PPA and report back.
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you are a member of Ubuntu
I can confirm I had the same problem with 2.6.31-18 (ICH7 chipset). After
following these instructions to upgrade the kernel to 2.6.32, everything works
fine:
http://www.ramoonus.nl/2009/12/03/linux-kernel-2-6-32-installation-guide-for-ubuntu-linux/
The mouse doesn't freeze anymore and apps are
Arrg! Same issue here coupled with the slow SATA performance bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/119730
Started happening for me with Hardy Heron about 1.5 years ago. Now
running up-to-date Karmic with same issue.
Lenovo T61
1GB DDR2 667
500GB Seagate SATA2 ST9500420AS
Hi,
I've been running Ubuntu 9.10 for a while now (currently on kernel
2.6.31-17.54). The problem with high I/O latencies during write-load
persists, even after migrating all partitions to the EXT4 file system.
The hardware is still the same as when I reported this bug originally.
Again, to
This is probably what I'm seeing:
http://bugzilla.kernel.org/show_bug.cgi?id=12309
However, it looks like the most promising patch is only available from 2.6.32+.
** Bug watch added: Linux Kernel Bug Tracker #12309
http://bugzilla.kernel.org/show_bug.cgi?id=12309
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Very poor desktop
This bug may be a duplicate of #131094 even though I have not marked it
as such (yet). See the comment at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/131094/comments/235
and test your workload against it. Note that this has been a workload
sensitive problem. You may have another
I've same issue on my laptop.
Some information :
$ uname --all
Linux stephane-macbook 2.6.28-13-generic #44-Ubuntu SMP Tue Jun 2 07:57:31 UTC
2009 i686 GNU/Linux
Do you need other information ?
Is it an ubuntu bug or kernel bug ? If the last, may be we can found
this bug in kernel bugzilla ?
echo 1 queue_depth was not enought in my case.
What you see in queue_type when you do that?
simple, none or something else?
I resolved it adding my hd (WDC WD3200BEVT-22ZCT0) in the NCQ blacklist
in drivers/ata/libata-core.c and now I can read very big files from the disk
without any problem...
take a look at bug 381300!
please boot with elevator=noop and try if the problem persist...
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you are a member of Ubuntu
Bugs, which is
Still a problem in Ubuntu Jaunty with all filesystems converted to EXT4.
Copying 6-7 GB from one place on a partition to another place on the
same partition (i.e. duplicating the data on the same harddrive) results
in extreme I/O latencies, and things like starting up Firefox while copy
operation
I had a problem with a sata disk under heavy I/O ... response time
degraded when loading/starting new applications (... until the disk
finally freezed).
I solved my problem by fine tunning the pdflush parameters...
Monitor the Dirty values in cat /proc/meminfo ... if the values
remain high (...
*** This bug is a duplicate of bug 270794 ***
https://bugs.launchpad.net/bugs/270794
I'll check it out and if that's the problem, I'll mark this bug a
duplicate of the other.
qwerty wrote:
I had a problem with a sata disk under heavy I/O ... response time
degraded when loading/starting new
*** This bug is a duplicate of bug 270794 ***
https://bugs.launchpad.net/bugs/270794
@qwerty: Thanks for the hint, but I think it is not related. I don't
have problems with the disk or controller under high load, only with the
general latency of the system.
So, this is not a duplicate of bug
** This bug is no longer a duplicate of bug 270794
2.6.24-19-generic libata soft resetting link every 30 secs when under heavy
load
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you
Attaching some latencytop output while doing a large read ..
** Attachment added: latencytop.log
http://launchpadlibrarian.net/23950515/latencytop.log
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug
Excellent, thank you.
Øyvind Stegard wrote:
Attaching some latencytop output while doing a large read ..
** Attachment added: latencytop.log
http://launchpadlibrarian.net/23950515/latencytop.log
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
** Attachment added: Kernel log from boot
http://launchpadlibrarian.net/23891945/dmesg
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you are a member of Ubuntu
Bugs, which is
** Attachment added: Output of command 'lspci -vv'
http://launchpadlibrarian.net/23891954/lspci.txt
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Very poor desktop response (high latency) during I/O-load with SATA+NCQ
https://bugs.launchpad.net/bugs/343371
You received this bug notification because you are a member of Ubuntu
Bugs,
Thank you for reporting this problem. It helps us make Ubuntu better.
Would you please follow this link (http://www.howtoforge.com/measuring-
linux-latency-with-latencytop-on-ubuntu-8.10-and-debian-lenny) and give
us the results? It could be very useful info to help us help you.
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