[uml-devel] sysreq t back traces stopped working please help
Hi Richard, uml hackers Since some time my "echo t > /proc/sysrq-trigger" stopped producing the proper global back-traces for all Kernel threads. All I get is: Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] ksoftirqd/0 3 58344.325336124146 120 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] kworker/0:0H 5 3160.151405 5 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] khelper 7 8.451419 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]kdevtmpfs 8 5439.251379 169 120 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]netns 9 10.451418 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]writeback37 13.451416 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] bioset39 12.451417 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] kblockd41 11.951416 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] kswapd066 22.451413 3 120 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]fsnotify_mark67 1686.151405 6 120 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] deferwq 219 25.451413 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] jbd2/ubda-8 220 58318.325347 330 120 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] ext4-rsv-conver 221 24.951412 2 100 0 0 0.00 0.00 0.00 / Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] systemd-journal 233 2254.451426 466 120 0 0 0.00 0.00 0.00 /system/systemd-journald.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]systemd-udevd 238 426.451404 696 120 0 0 0.00 0.00 0.00 /system/systemd-udevd.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] rsyslogd 485 447.70142138 120 0 0 0.00 0.00 0.00 /system/rsyslog.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] in:imuxsock 549 447.701421 221 120 0 0 0.00 0.00 0.00 /system/rsyslog.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]in:imklog 550 447.70142129 120 0 0 0.00 0.00 0.00 /system/rsyslog.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94]rs:main Q:Reg 551 450.701421 255 120 0 0 0.00 0.00 0.00 /system/rsyslog.service Feb 27 12:47:32 fc18-buml18 kernel: [189390.94] systemd-logind 486 1540.451422 282 120 0 0 0.00 0.00 0.00 /system/systemd-logind.service . etc ... Single line statistics per thread. I'm based on "make defconfig" plus some additional "YESs". Is there something more (new) I need to set to get this working? If not do you have a theory or I should start bisecting? (Using Fedora 18 um image, on Fedora 18 host 64bit both) Thanks lots in advance Boaz --
Re: [uml-devel] sysreq t back traces stopped working please help
Hi! Am 27.02.2014 20:05, schrieb Boaz Harrosh: > Hi Richard, uml hackers > > Since some time my "echo t > /proc/sysrq-trigger" stopped producing the > proper global back-traces for all Kernel threads. > All I get is: "some time" is a bit vague. Do you have more details? Thanks, //richard -- Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk ___ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] sysreq t back traces stopped working please help
Am 27.02.2014 20:05, schrieb Boaz Harrosh: > Hi Richard, uml hackers > > Since some time my "echo t > /proc/sysrq-trigger" stopped producing the > proper global back-traces for all Kernel threads. > All I get is: I have an idea, do you see this regression starting with v3.12? Thanks, //richard -- Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk ___ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] sysreq t back traces stopped working please help
On 02/27/2014 09:16 PM, Richard Weinberger wrote: > Hi! > > Am 27.02.2014 20:05, schrieb Boaz Harrosh: >> Hi Richard, uml hackers >> >> Since some time my "echo t > /proc/sysrq-trigger" stopped producing the >> proper global back-traces for all Kernel threads. >> All I get is: > > "some time" is a bit vague. Do you have more details? > OK I've found my problem Da. It all goes to con0 and not at all to /var/log/messages (Fedora) I'll recheck my log levels I see in code KERN_INFO so i do think it should appear but I'll recheck. Which brings me back to my original problem with my UML setup that Fedora absolutely refuses to use con0= as its main prompt and will only use con1= So I need to now chose what will go to my bash console, the Kernel console output (printk(s)), or Fedora main prompt. Nothing I tried would combine them both. Like it used to be before. [ Here is what I use: option 1: vmlinux con0=fd:0,fd:1 con=pts (Will only send printk, invoking console becomes read-only) option 2: vmlinux con1=fd:0,fd:1 con=pts (invoking console becomes UML's main console RW. printk through log file only, bad for postmortem) I'll use option 1 for now, so thanks Boaz > Thanks, > //richard > -- Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk ___ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] sysreq t back traces stopped working please help
On 02/27/2014 09:22 PM, Richard Weinberger wrote: > > > Am 27.02.2014 20:05, schrieb Boaz Harrosh: >> Hi Richard, uml hackers >> >> Since some time my "echo t > /proc/sysrq-trigger" stopped producing the >> proper global back-traces for all Kernel threads. >> All I get is: > > I have an idea, do you see this regression starting with v3.12? > > Thanks, > //richard > Yes. You are right since 3.12 Yes. 3.11 is like before. But please see my other mail it has more info. Thanks, sir Boaz -- Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk ___ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] sysreq t back traces stopped working please help
On 02/27/2014 09:25 PM, Boaz Harrosh wrote: > On 02/27/2014 09:16 PM, Richard Weinberger wrote: >> Hi! >> >> Am 27.02.2014 20:05, schrieb Boaz Harrosh: >>> Hi Richard, uml hackers >>> >>> Since some time my "echo t > /proc/sysrq-trigger" stopped producing the >>> proper global back-traces for all Kernel threads. >>> All I get is: >> >> "some time" is a bit vague. Do you have more details? >> > > OK I've found my problem Da. It all goes to con0 and not at all to > /var/log/messages (Fedora) > I'll recheck my log levels I see in code KERN_INFO so i do think it should > appear but I'll > recheck. > OK I do not understand. I do see my KERN_DEBUG level at /var/log/messages say from nfs.ko (dprintk) But I do not see these backtrace output at /var/log/messages. At con0 I see everything. Thanks Boaz -- Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk ___ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
