[lkml]   [2001]   [Oct]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Kernel performance in reference to 2.4.5pre1
Andrew Morton [] wrote:
> SFS is a rather specialised workload, and synchronous NFS exports
> are not a thing which gets a lot of attention. It could be one
> small, hitherto unnoticed change which caused this performance
> regression. And it appears that the change occurred between 2.4.5
> and 2.4.7.

Cary, also note that Andrew did some work with ext3 which can greatly
improve the performance of synchronous I/O. Granted, it doesn't fix
any performance issues in the VM or VFS that may have been introduced,
but if you are looking for good benchmark numbers, give ext3 a try.

Use a large journal to avoid journal flushes for sync I/O. See:

Cheers, Andreas
Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto,
\ would they cancel out, leaving him still hungry?" -- Dogbert

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:08    [W:0.033 / U:2.360 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site