I'm serving several Windows 2000 clients from several FreeBSD 4.3 servers
and I'm running into a performance bottleneck somewhere which appears to
be on the Windows 2000 side of things. Performance w/ FreeBSD -> FreeBSD
is great!
Hardware:
* Intel 2x1 Ghz CPUs
* 1 gig of RAM
* Extreme Summit 1i w/ Copper and SX Interfaces
Performance w/ ttcp (for UNIX + Win32):
FreeBSD 4.3 + Netgear 622T -> FreeBSD 4.3 + Netgear 622T = 875 Mbps
FreeBSD 4.3 + Netgear 622T -> Windows 2000 + Netgear 622T = 350 Mbps
FreeBSD 4.3 + Netgear 622T -> Windows 2000 + 3Com 3c985-SX = 350 Mbps
I've tried running multiple instances (overlapping) of ttcp w/ no
performance increases (ie: each instance halfs thruput) and I've tried
tweaking the following on FreeBSD with no results:
sysctl -w net.inet.tcp.delayed_ack=0
sysctl -w net.inet.tcp.sendspace=65535
sysctl -w net.inet.tcp.recvspace=65535
Does anyone have any opinions on how to tweak the performance on either
end? Thanks in advance!
---
Mike Wade ([EMAIL PROTECTED])
Network Engineer
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