Messages in this thread | | | From | Michael Buesch <> | Subject | Re: [PATCH] Staircase scheduler v7.4 | Date | Fri, 25 Jun 2004 20:44:22 +0200 |
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On Friday 25 June 2004 18:46, you wrote: > I haven't seen what is in -bk7 so I don't know if there's an issue with > applying it to that. Anything's possible, though. See if you can > reproduce it and isolate it to staircase or not and collect some more > info about what is happening with the task from top, vmstat and > /proc/$pid/status
I just catched a stalled process:
mb 11000 0.4 0.6 4604 3180 tty2 S 20:32 0:01 /bin/sh ./configure --enable-debug
mb@lfs:/proc/11000> cat status Name: configure State: S (sleeping) Burst: 0 Tgid: 11000 Pid: 11000 PPid: 1858 TracerPid: 0 Uid: 1000 1000 1000 1000 Gid: 100 100 100 100 FDSize: 256 Groups: 9 10 100 VmSize: 4604 kB VmLck: 0 kB VmRSS: 3180 kB VmData: 2356 kB VmStk: 132 kB VmExe: 572 kB VmLib: 1444 kB Threads: 1 SigPnd: 0000000000000000 ShdPnd: 0000000000000000 SigBlk: 0000000000010000 SigIgn: 8000000000000004 SigCgt: 0000000043817efb CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000
I don't know what the file wchan is good for, but here is it's output: mb@lfs:/proc/11000> cat wchan sys_wait4
Seems it's killable by SIGKILL only. mb@lfs:/proc/11000> kill 11000 mb@lfs:/proc/11000> kill 11000 mb@lfs:/proc/11000> kill 11000 mb@lfs:/proc/11000> kill -9 11000 mb@lfs:/proc/11000> kill -9 11000 bash: kill: (11000) - No such process
Now it's some kind of reproducible (maybe because the machine has a higher uptime, now). A ./configure run sooner or later stalls for sure, now.
mb@lfs:~> vmstat procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 13 0 92 42520 43696 235384 0 0 33 75 2201 1949 88 12 0 0
- -- Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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