Date: Sun, 24 Sep 2006 16:05:05 +0200 From: =?ISO-8859-1?Q?Sten_Daniel_S=F8rsdal?= <lists@wm-access.no> To: Jan Zacharias <fbsd-performance@graphics.cs.uni-sb.de> Cc: freebsd-performance@freebsd.org Subject: Re: Samba performance, TCP Stack Issue? Message-ID: <45169091.4040000@wm-access.no> In-Reply-To: <op.tfbpd5d0v366f6@bofh.cs.uni-sb.de> References: <op.tfbpd5d0v366f6@bofh.cs.uni-sb.de>
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Jan Zacharias wrote: > Hi, >=20 > was anybody able to tune the Samba service (2.2.12 or 3.0.23b) so that > it would perform out as well as > unter linux where it maxes out at about 11 Mb/s using some Intel/3com c= ard? >=20 > So far, the most I got out of it was ~6 Mb/s while txing one file to a > win2k station, curiously I get > ~8.5 Mb/s when txing multiple files in parallel. >=20 > So far i messed with: >=20 > - ifconfig mtu > - net.inet.tcp settings > - smb's socket options >=20 > Tuning SO_SNDBUF gave only very little gain, adapting the mtu to match > the win2k box was useless. > W/a net.inet.tcp.inflight.enable enabled the txrate is 2 Mb/s lower, > however 6 Mb/s is still SLOW. >=20 > I cant find the bottleneck, as the system is quite idle. >=20 > Any Suggestions? >=20 Try setting sysctl net.inet.tcp.delayed_ack to '0'. If that helps noticably you may tune sysctl net.inet.tcp.delacktime to a lower value than the default ('100' ??). delacktime is only in effect when net.inet.tcp.delayed_ack =3D '1'. Does that help any? --=20 Sten Daniel S=F8rsdal
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