Hi, I am running a samba 3.0.14a server on a 2.6.15.6 kernel, on a 4T - SATA2 NAS. The disks are formated in xfs and configurated in hard RAID5. Network is bonded with 2 Gbits links using 802.3ad agregation. The NAS is connected on a Gbits switch (Summit 400 - extreme Networks), also configured with dynamic sharing. I am trying to get the best performances in Reading/writting the NAS, and what I am obtaining is very poor ...
I have been trying many kind of tests with several clients (win XP console, win XP gui, MACOSX, many linux ...). The fact is first I can't get the first NAS interface overloaded, it never get the turn to the second one. I have very poor transfer rates : -copy to windows from a NAS Samba export : max 20 MBytes/s with many kind of file sizes -copy to Linux (on firewire 800) from a NAS Samba export : max 12 MBytes/s with many kind of file sizes The linux mount is made using CIFS drivers. on the other side, writting on the NAS give me the same results. I have also made some tests with the IOMeter tool on a winXP samba mount, configure with a transfert request size of 32MB, 100% reading, full sequential access. With 4 workers on the same client I get (according to snmp results) a rate of 80 MBytes/s ! PS : Directly on the NAS, using the tool Bonnie++ (not using samba...) we get a pretty 150 MBytes/s with the writting tests. PS2 : We have made theses tests with samba,nfs and Afp exports The clients configurations are the following : - linux clients : Bi-Proc 1Ghz - 1 GB RAM Disks Firewire 800 GbE network - Avid HP WinXP Bi-Proc 3Ghz 2GB RAM 6 SCSI RAID0 drives GbE network Thanks for helping me to understand why we can't get better perfs ? john -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba