Re: 2.4.20: Proccess stuck in __lock_page ...

manish
2003-05-27T04:12:18Z

Marcelo Tosatti wrote:

>
>On Mon, 26 May 2003, manish wrote:
>
>>Hello !
>>
>>I am running the 2.4.20 kernel on a system with 3.5 GB RAM and dual CPU.
>>I am running bonnie accross four drives in parallel:
>>
>>bonnie -s 1000 -d /<dir-name>
>>
>>bdflush settings on this system:
>>
>>[root@dyn-10-123-130-235 vm]# cat bdflush
>>2 50 32 100 50 300 1 0 0
>>
>>All the bonnie process and any other process (like df, ps -ef etc.) are
>>hung in __lock_page. Breaking into kdb, I observe the following for one
>>such bonnie process:
>>
>>schedule(..)
>>__lock_page(..)
>>lock_page(..)
>>do_generic_file_read(..)
>>generic_file_read(..)
>>
>>After this, the processes never exit the hang. At times, a couple of
>>bonnie processes complete but the hang still occurs with the remaining
>>processes and with the other processes.
>>
>>I tried out the 2.5.33 kernel (one of the 2.5 series) and observed that
>>the hang does not occur. If I run, two bonnie processes, they never get
>>stuck. Actually, if I run 4 parallel mke2fs, they too get stuck.
>>
>>Any clues where this could be happening?
>>
>
>Hi,
>
>Are you sure there is no disk activity ?
>
>Run vmstat and check that, please.
>
Hello !

Thanks for the response.

The light on the controller does not blink at all. Intitially, it does
blink. However, after this hang, it does not at all.

vmstat after the hang

1 1 0 780 2056892 5784 1415324 0 0 0 4 102 7
49 1 50
1 1 0 780 2056892 5784 1415324 0 0 0 4 102 9
49 1 50
1 1 0 780 2056892 5784 1415324 0 0 0 5 104 10
29 21 50
0 1 0 780 2056708 5784 1415324 0 0 0 1 104 12
0 13 86
1 1 0 780 2222904 5784 1249396 0 0 0 172 126 25
0 4 96
0 1 0 780 3081052 5784 391324 0 0 0 403 161 43
0 12 88
procs memory swap io
system cpu
r b w swpd free buff cache si so bi bo in cs us
sy id
0 1 0 780 3080952 5788 391408 0 0 29 9 120 72
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 0 111 19
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 1 103 9
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 0 101 9
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 0 101 7
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 0 101 9
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 0 102 9
0 0 100
0 1 0 780 3080952 5788 391408 0 0 0 1 101 8
0 0 100
0 1 0 780 3081308 5788 391420 0 0 0 231 150 92
3 0 97
0 1 0 780 3081308 5788 391420 0 0 0 0 102 7
0 0 100
0 1 0 780 3081308 5788 391420 0 0 0 0 102 7
0 0 100
0 1 0 780 3081304 5788 391420 0 0 0 0 101 9
0 0 100
0 1 0 780 3081304 5788 391420 0 0 0 0 102 8
0 0 100
0 1 0 780 3081300 5788 391420 0 0 0 0 101 8
0 0 100
0 1 0 780 3081300 5788 391420 0 0 0 0 101 9
0 0 100
0 1 0 780 3081296 5788 391420 0 0 0 0 101 7
0 0 100
0 1 0 780 3081296 5788 391420 0 0 0 0 101 9
0 0 100

0 1 0 780 3081292 5788 391420 0 0 0 0 102 9
0 0 100
0 1 0 780 3081292 5788 391420 0 0 0 0 101 8
0 0 100
0 1 0 780 3081288 5788 391420 0 0 0 0 102 9
0 0 100
0 1 0 780 3081288 5788 391420 0 0 0 0 102 7
0 0 100
0 1 0 780 3081284 5788 391420 0 0 0 0 102 9
0 0 100
0 1 0 780 3081284 5788 391420 0 0 0 0 102 8
0 0 100
0 1 0 780 3081280 5788 391420 0 0 0 0 101 8
0 0 100

0 1 0 780 3081276 5788 391420 0 0 0 0 102 9
0 0 100

0 1 0 780 3081260 5788 391420 0 0 0 0 235 30
0 0 100
0 1 0 780 3081260 5788 391420 0 0 0 0 101 9
0 0 100
0 1 0 780 3081256 5788 391420 0 0 0 0 101 7
0 0 100
0 1 0 780 3081248 5788 391424 0 0 0 169 137 54
3 1 97
0 1 0 780 3081248 5788 391424 0 0 0 0 101 9
0 0 100
0 1 0 780 3081248 5788 391424 0 0 0 0 101 8
0 0 100
0 1 0 780 3081248 5788 391424 0 0 0 0 101 9
0 0 100

One bonnie process is hung.