[Samba] samba 3 performance

Alexander Lazarevich alazarev at itg.uiuc.edu
Fri Feb 25 20:42:22 GMT 2005


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.


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: samba-bounces+marc_kaplan=adaptec.com at lists.samba.org
> [mailto:samba-
>> bounces+marc_kaplan=adaptec.com at lists.samba.org] On Behalf Of
> Alexander
>> 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
> 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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