lkml.org 
[lkml]   [2003]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Strange performance change 59 -> 61/62
>> Some more stats ... which look rather suspicious. 600% increase for
>> dentry_open and __mark_inode_dirty? Hmmmmm.
>
> __mark_inode_dirty() just got itself an smp_mb(). Would be instructive to
> disable that.
>
> dentry_open(): don't know - fs/open.c hasn't changed at all. Perhaps
> dcache_rcu has caused additional pingpong?

2.5.59-mjb6 84 __mark_inode_dirty
2.5.61-mjb1 594 __mark_inode_dirty
2.5.61-mjb1-no_mb 74 __mark_inode_dirty

Yup, that fixed that one ... but presumably it was put there for a reason,
so I can't just rip it out ;-) Thanks, I'll go take a closer look at the
others.

M

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.050 / U:7.376 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site