* 2.4.19' drivers/block/ll_rw_blk.c
@ 2002-08-05 10:23 Marc-Christian Petersen
2002-08-06 15:12 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Marc-Christian Petersen @ 2002-08-05 10:23 UTC (permalink / raw)
To: linux-kernel; +Cc: Marcelo Tosatti, Adrian Bunk
Hi there,
could you please consider changing those very slow behaviour in
"drivers/block/ll_rw_blk.c"? ... Benchmarked against 2.4.18 this is horribly
slower ... Doing some heavy disk i/o, want to start another thing, system
freeze for some seconds ... Opening a xterm , Ctrl-D to leave, this takes
about 5 seconds and somewhat is doing flushing to the disk.
Maybe req_finished_io ?
Adrian, could this be the problem you've experienced?
Afaik this was changed for 2.4.19-pre7 and above.
--
Kind regards
Marc-Christian Petersen
http://sourceforge.net/projects/wolk
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: 2.4.19' drivers/block/ll_rw_blk.c
2002-08-05 10:23 2.4.19' drivers/block/ll_rw_blk.c Marc-Christian Petersen
@ 2002-08-06 15:12 ` Jens Axboe
0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2002-08-06 15:12 UTC (permalink / raw)
To: Marc-Christian Petersen; +Cc: linux-kernel, Marcelo Tosatti, Adrian Bunk
On Mon, Aug 05 2002, Marc-Christian Petersen wrote:
> Hi there,
>
> could you please consider changing those very slow behaviour in
> "drivers/block/ll_rw_blk.c"? ... Benchmarked against 2.4.18 this is horribly
> slower ... Doing some heavy disk i/o, want to start another thing, system
> freeze for some seconds ... Opening a xterm , Ctrl-D to leave, this takes
> about 5 seconds and somewhat is doing flushing to the disk.
>
> Maybe req_finished_io ?
>
> Adrian, could this be the problem you've experienced?
This is a crazy bug report, sorry :-)
What slow behaviour in ll_rw_blk.c?! Consider providing vmstat when the
slowdown takes place. Also, try enable profiling if it seems like hard
system freezes.
> Afaik this was changed for 2.4.19-pre7 and above.
2.4.19-pre7 works fine, 2.4.19-pre8 stinks?
--
Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-08-05 10:23 2.4.19' drivers/block/ll_rw_blk.c Marc-Christian Petersen
2002-08-06 15:12 ` Jens Axboe
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