CIFS slower than rsync

[Marc Allard]

Hello,

I have tried to copy a file from a SSD (windows 8) to my Freenas server.
I have seen that the speed with CIFS is around 65-75 MB/sec while I have a speed of about 90-95 Mo / sec. with rsync. (copy of a new file so there is no gain from rsync).
I have always been told that the speed of CIFS (protocol SMB3_00) is expected to be greater than the speed of rsync. Am I missing something? Is there an option I should use?

The MB is a Supermicro X1SL7-F and 32 Go RAM crucial. the CPU is a Xeon (quad core hyperthreaded) (Raid Z2 of 4+2 Caviar raid) on the LSI chipset (flashed to IT mode)
On the windows the CPU is a core i7 and the motherboard has a Intel network chipset.


Thank you
Marc

 

[gpsguy]

You might try switching back to SMB2 (see this message: http://forums.freenas.org/index.php...lightly-masochistic-beta-testers.20741/page-7).

SMB2 is now the default in 9.2.1.6-RC

 

[Marc Allard]

Hello,
I didn't see any speed increase with SMB2 (and I still have the problem with the deadlock.
freenas winbindd[13378]: [2014/06/27 06:10:00.854915, 0] ../source3/winbindd/winbindd_samr.c:769(sam_rids_to_names)
freenas winbindd[13378]: sam_rids_to_names: possible deadlock - trying to lookup SID S-1-5-21-3554523030-169743674-3960112047

I have seen that by using the mtu 9000 (optional parameter) the speed increases to around 80Mo/sec with CIFS) and the rsync speed decreases to around 70 Mo/sec.

 

[cyberjock]

I'd be upset if I got 80MB/sec. I regularly do 110MB/sec+ without jumbo frames.

 

[Marc Allard]

Hello,
My read speed (from Freenas to my desktop SSD is around 110 MB/sec) with jumbo frames (I didn't do a test without).
My write speed is around 80Mb/sec. So I guess that the "slow" write speed is because my CPU is too slow? (E3-1245) for 6 HDD.
I have also put my 6 HDD in slow noise and slow power consumption. Perhaps if I increase these values it will be greater?