Messages in this thread | | | Date | Tue, 27 May 2003 11:09:22 -0700 | From | manish <> | Subject | Re: 2.4.20: Proccess stuck in __lock_page ... |
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Marcelo Tosatti wrote:
> >On Tue, 27 May 2003, Marc-Christian Petersen wrote: > >>On Tuesday 27 May 2003 19:47, Marcelo Tosatti wrote: >> >>Hi Marcelo, >> >>>>A pause is _not_ perfectly fine, even not to some extent. That pause we >>>>are discussing about is a pause of the _whole_ machine, not just disk i/o >>>>pauses. Mouse stops, keyboard stops, everything stops, who knows wtf. >>>> >>>Do you also notice them? >>> >>I do, people I know do also, numbers of those people only _I_ know are about >>~30. I've reported this problem over a year ago while 2.4.19-pre time. >> > >Can you please try to reproduce it with -aa? > >>>>That behaviour is absolutely bullshit for desktop users. For serverusage >>>>you may not notice it in this dimension (mostly no X so no mouse), but >>>>also for a server environment this may be very bad. >>>> >>>Agreed. >>> Hello !
After several tests, I have noticed that I can produce this problem easily when my bdflush settings are:
30 50 32 100 50 300 60 0 0
and it occurs very less frequently when my settings are:
2 50 32 100 50 300 1 0 0
Right now, I noticed the following stack trace for one such stuck process:
sys_read generic_file_read do_generic_file_read page_cache_read __alloc_pages balance_classzone try_to_free_pages shrink_caches shrink_cache try_to_release_page try_to_free_buffer sync_page_buffers wait_on_buffer __wait_on_buffer schedule
Thanks -Manish
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