[Samba] Transfer rates faster than 23MBps?
msmith at customflix.com
Fri Sep 22 21:30:27 GMT 2006
I have not. Unfortunately, that is not a trivial process. I believe
everything supports it, but it's a somewhat major change to my
production systems. It might be worth trying as a data point, however.
Given the iPerf tests, I really don't think it's a network bottleneck at
Pitti, Raul wrote:
> i am not an expert, but,
> do you have jumbo frame enabled on your nic and switch?
> try using ethtools...
> Mark Smith wrote:
>> Mark Smith wrote:
>>> As a data point, I'm going to try a newer version of Samba. (RHEL4
>>> uses 3.0.10-RedHat-Heavily-Modified-Of-Course) If that makes a
>>> difference, then I have to decide whether it's worth it to me to keep
>>> RedHat support or not. (And when I say "I," I really mean "my
>> I've just tried this. Samba v3.0.23c, built locally from the Fedora
>> Source RPM as distributed at samba.org, makes no noticeable
>> difference: still about 45 seconds.
>>>> I have lots of memory. I use these configurations in sysctl.conf to
>>>> up the performance of send/recieve windows on my systems. There's
>>>> articles out there. I don't have historical references handy.
>>>> net.core.wmem_max = 1048576
>>>> net.core.rmem_max = 1048576
>>>> net.ipv4.tcp_wmem = 4096 65536 1048575
>>>> net.ipv4.tcp_rmem = 4096 524288 1048575
>>>> net.ipv4.tcp_window_scaling = 1
>>> I have not tried tweaking the TCP stack in the OS. I'll give that a
>> The person at RedHat who's handling my ticket just suggested these
>> very changes, without the last one. They did not help. The values he
>> gave were a little different:
>> ----- snip! -----
>> # increase TCP maximum buffer size
>> net.core.rmem_max = 16777216
>> net.core.wmem_max = 16777216
>> # increase Linux autotuning TCP buffer limits
>> # min, default, and maximum number of bytes to use
>> net.ipv4.tcp_rmem = 4096 87380 16777216
>> net.ipv4.tcp_wmem = 4096 65536 16777216
>> ----- snip! -----
>> I also tried your values, with the tcp_window_scaling, with no luck.
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