[Samba] samba 3 performance

Kaplan, Marc marc_kaplan at adaptec.com
Fri Feb 25 16:32:26 GMT 2005

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.


> -----Original Message-----
> From: samba-bounces+marc_kaplan=adaptec.com at lists.samba.org
> bounces+marc_kaplan=adaptec.com at lists.samba.org] On Behalf Of
> Lazarevich
> Sent: Thursday, February 24, 2005 11:36 AM
> To: samba at 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
> those speeds. We have that exact setup, and we only get 30MB/sec
> sequential throughput. In fact our servers and clients disk benchmark
> 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
> switches do not support jumbo frames, so changing the MTU on the
> NIC's and samba get's us nowhere because the switches won't do it
> 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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