Re: speed of COW directory copying: XFS 20x slower than ext3

2007-09-18 Thread Ondrej Certik
> > it turned out the problem is in the XFS filesystem, that is 20x slower, > > than the ext3 filesystem. I know that XFS is bad at handling small > > files, but 20x times? > > Try to play with parameters mentioned in laptop-mode.txt in the Linux > sources. > > Then, try to have XFS log area on sep

Re: speed of COW directory copying: XFS 20x slower than ext3

2007-09-17 Thread Oleg Verych
* Sun, 16 Sep 2007 04:26:05 +0200 > Hi, Hallo. > it turned out the problem is in the XFS filesystem, that is 20x slower, > than the ext3 filesystem. I know that XFS is bad at handling small > files, but 20x times? Try to play with parameters mentioned in laptop-mode.txt in the Linux sources. T

speed of COW directory copying: XFS 20x slower than ext3

2007-09-15 Thread Ondrej Certik
Hi, I am using cowbuilder for building my packages, because the initialization takes like 10s, compared to several minutes with pbuilder on my system. A few days ago, I realized that on one of my systems, it takes 0.5s only to copy the COW directory. I became curious and wanted to know why, so I d