On Tue, Mar 30, 2010 at 05:42:27PM +0000, Mahmud Siddiqi wrote: > I figured that 10GbE was used. Was that throughput to a single client, or was > it aggregate at the server?
Single smbclient get request. > I typically see 35MB/sec over my current 1GbE lines. Clients are WinXP32, > WinXP64, and soon Win7. Disk rates exceed 500MB/sec (RAIDs). Server is Samba > 3.0.2x on Mac OSX Server with XRAID SAN. > > I would really like to see 80-90 MB/sec with my current setup, which I could > reach before XP SP3 (we'll put in 10GbE lines sooner or later). I am seriously > considering bringing up a new Linux server running Samba 3.5 for performance > and other reasons, since Apple is in no hurry to update Samba in OSX. However, > I am by no means an SMB expert, so any advice for tuning either my current > clients and server, or the potential new server would be greatly appreciated > (e.g., how would I set Windows for multi-issue of SMB requests?). > > I have implemented the relevant tweaks for Windows clients that I've found in > the Samba documentation, but no performance increase was seen. I am also in > the > enviable position of having a network with no packet loss, virtually no > latency, and virtually no collisions, so the usual buffering tweaks don't > help.... Performance really very closely depends on the applications you are using. Last year for example I have seen a dramatic difference in behaviour between drag and drop using the Windows 7 explorer application compared to using xcopy on the same client host. I have also done consulting at a customer where suddenly a report run on a database ran 10 times slower than before. It turned out that they had a second concurrent user on the database which invalidated the oplocks. So, for performance tuning is really not simple. Volker
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