On Mon, Sep 05, 2011 at 12:25:21PM -0400, Christoph Hellwig wrote: > On Mon, Sep 05, 2011 at 06:23:23PM +0200, Tomasz Chmielewski wrote: > > > That's because dpkg is known for using (f)sync very heavily. btrfs > > >honours the sync request in all cases, so it's much much slower than > > >ext3, which doesn't. > > > > Hmm, is it really the case with ext3/ext4 (ignoring fsync in some cases)? > > > > Sounds like a bug in ext3/ext4 then. > > > > Is it documented anywhere where ext3/ext4 would just silently ignore fsync? > > They don't. Unteil recently ext3 and reiserfs would not flush the > disk caches unless enabled by a mount option, but even that has recently > been fixed.
Apologies for disseminating my misunderstanding, then. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- You can get more with a kind word and a two-by-four than you --- can with just a kind word.
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