Messages in this thread | | | Date | Fri, 21 Feb 2003 09:27:29 -0800 | From | "Martin J. Bligh" <> | Subject | Re: Strange performance change 59 -> 61/62 |
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>> 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
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