Re: More Slowdown

[Laurent Riffard <laurent.riffard@free.fr>]

Le 15.11.2005 15:27, Craig Shelley a écrit :
> On Mon, 2005-11-14 at 21:47 +0100, Christian Iversen wrote:
> 
>>That's _serisouly_ odd. I've seen something like this happen before, when X 
>>programs generated some (non-harmful) X warnings. These were then written 
>>into a log file, typically .xsession-errors or similar. Any chance that's 
>>what you are seeing?
>>
> 
> This explains the problem with Evolution, it looks a bit trigger happy
> with the fsync call while resizing columns.
> craig@teratron.lan.etheus.net:~$ strace -p 8002 2>&1 | grep fsync
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0
> fsync(37)                               = 0

Please, could you do it again with the -T option for strace? It will
show the time spent in system  calls.

> while true; do lsof  -p 8002 2>&1 | grep 37w ; done
> evolution 8002 craig   37w   REG        3,4     417
> 1901436 /mnt/storage/craig-home/.evolution/mail/views/.#custom_view-mbox:_home_craig_.evolution_mail_local#Lists_Reiser4.xmlwhile 
> 
> The file listed above seems to get moved, but is only a few hundred
> bytes.
> 
> ls -lh /mnt/storage/craig-home/.evolution/mail/views/custom_view-mbox
> \:_home_craig_.evolution_mail_local#Lists_Reiser4.xml
> -rw-------  1 craig craig 417 2005-11-15
> 14:19 /mnt/storage/craig-home/.evolution/mail/views/custom_view-mbox:_home_craig_.evolution_mail_local#Lists_Reiser4.xml
> 
> Why does calling fsync on this one small file cause so much hard disk
> activity?