Marc,

Thanks for the feedback. I've got a dual 64-bit opteron system (246), going to run FC3, and I'll try to get 75+MB/sec from samba 3 <-> windows xp client. I'll let you know the results.

Alex

On Fri, 25 Feb 2005, Kaplan, Marc wrote:

Yes, I get more than 30MB/s performance. The benchmark I use (NetBench)
is essentially CPU bound, such that a faster processor = faster
performance. With a very fast hardware config (dual 3.2GHz processors),
I've been able to hit around 100MB/s. Changing the RAM or other
attributes does not buy me much, it seems that processor power is the
bottleneck (at least in my case).

When doing your speed test, monitor the CPU utilization for smbd, and
see if it's at 100% of your linux server.

                -Marc

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:samba-
[EMAIL PROTECTED] On Behalf Of
Alexander
Lazarevich
Sent: Thursday, February 24, 2005 11:36 AM
To: samba@lists.samba.org
Subject: [Samba] samba 3 performance

Does anyone succesfully get more than 60MB/sec sequential throughput,
WITHOUT jumbo frames, with the following configuration:

samba 3 on RedHat linux server
windows XP Pro workstations
GigE NIC's and GigE switches

Assuming all the disks/buses on the server and client ends are capable
of
those speeds. We have that exact setup, and we only get 30MB/sec
maximum
sequential throughput. In fact our servers and clients disk benchmark
at
more than 100MB/sec seq. throughput, and our netperf is >100MB/sec as
well, but we still only get 30MB/sec when going through samba.

Also, we actually do not manage our network switches, and we are told
the
switches do not support jumbo frames, so changing the MTU on the
client
NIC's and samba get's us nowhere because the switches won't do it
anyway.

Mostly I'm just trying to find out if anyone get's decent GigE network throughput through samba 3. I want to rule out that samba is the bottleneck.

Thanks,

Alex


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