[Samba] Transfer rates faster than 23MBps?
Mark Smith
msmith at customflix.com
Fri Sep 22 21:06:23 GMT 2006
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 management.")
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 I don't have historical references handy.
>> YMMV.
>> 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 shot.
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.
-Mark
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