Re: [PATCH] x86_64: fix delayed signals

Török Edwin
2008-07-12T10:34:14Z

On 2008-07-12 01:53, Arjan van de Ven wrote:
> On Fri, 11 Jul 2008 11:31:26 -0700 (PDT)
> Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
>
>> On Fri, 11 Jul 2008, Linus Torvalds wrote:
>>
>>> Btw, did any of the impacted people test -rc9? Edwin's report is
>>> about -rc2 and -rc8, and one of the things we fixed since -rc8 is
>>> that incorrect and unintentional nr_zones zeroing that effectively
>>> disabled kswapd - and made everybody do synchronous memory freeing
>>> when they wanted to allocate more memory.. That can play havoc with
>>> any interactive stuff.
>>>
>> Hmm. Edwin's latencytop output includes this (ignoring the _very_ top
>> entries that are all either CD-ROM media change tests or are
>> interruptible pipe/select things) at the top:
>>
>> 21 10264428 915514 get_request_wait __make_request
>> generic_make_request submit_bio xfs_submit_ioend_bio xfs_submit_ioend
>> xfs_page_state_convert xfs_vm_writepage __writepage
>> write_cache_pages generic_writepages xfs_vm_writepages
>>
>
>
> argh. well I guess this might be useful for this case, but normally
> latencytop gives you much more humanly readable data... maybe Edwin
> forgot to do "make install" :-(

I forgot to use 'latencytop -d', I was running latencytop and when I've
seen something interesting I did a 'cat /proc/latency_stats' instead of
'latencytop -d'.
I'll try to use latencytop -d next time.

Best regards,
--Edwin