1) Okay. I found the following patch (might be related?): http://lkml.org/lkml/2007/2/27/304 I will try and let you know if it worked.
excellent! i'm curious to know your results.
2) When doing "dd if=/dev/zero of=test" on an non-gluster filesystem I get a much higher throughput (around 90 MB/s). Of course I can imagine this is caused by frequent kernel/user-space context switches and also read on the GlusterFS and FUSE roadmap this will be improved soon. I'm wondering how Hurd will do in this regard.
"dd if=/dev/zero of=test" without a big bs= value will be slow on *any* fuse based filesytems. i saw a few patches related to batch writepages support into fuse which would likely improve the performance a lot. infact i just wrote to the fuse-devel mailing list asking if this was on the way anytime.
3) It only happens in a chrooted environment on a gluster filesystem.
ah ok, looking into it. thanks! avati -- Anand V. Avati