Hi - I'm experiencing strange results when comparing the same setup on either Debian/Lenny and Ubuntu/Hardy. The server is composed of two replicated nodes (both with Debian/lenny with GlusterFS 3.0.3, 1GbE). Config files were generated with the following options: glusterfs-volgen --name store1 --raid 1 gl1:/export/nunki gl2:/export/nunki Two clients, one is an Ubuntu/Hardy (LTS, up-to-date) when the other is a Debian/Lenny. Altough a dd's issued on the Ubuntu client is quite satisfying, the write performances are disastrous on the Debian client. ubuntu:# dd if=/gl_nunki/file_test of=/dev/null 524288+0 records in 524288+0 records out 268435456 bytes (268 MB) copied, 3,15924 s, 85,0 MB/s lenny:# dd if=/dev/zero of=/mnt/file_test count=262144 bs=1024 262144+0 enregistrements lus 262144+0 enregistrements ??crits 268435456 bytes (268 MB) copied, 82,408 s, 3,3 MB/s Notes that might be of interest: - I have tried to mount the storage directly on both servers and I face the same poor performances - I have tried with v3.0.0 at the client side, same result - I have tried on three different Lenny clients (with different hardwares), always same results - With all performance translators disabled, the result is even worse (less than 1 MB/s) Actually, I suspect a kernel option in Debian/Lenny to be the cause of the problems, but TBH I don't know where to focus my attention. Any help would be greatly appreciated! Thanks in anticipation, -- Olivier
