Re: Performance/lockup issues with FreeBSD as a router (followup)
From: Peter Kieser (pfak_at_telus.net)
Date: 05/27/05
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Date: Thu, 26 May 2005 18:44:30 -0700 To: freebsd-performance@freebsd.org
Hello,
I fixed the problem. It appears that the kernel was running out of
memory to allocate the network sockets, I took your guys suggestions
(along with the kernel configurations and such), and the problem is now
resolved. I also replaced the physical machine, but am using the same
NICs for even better performance.
If anyone is interested in the exact configuration I've used, I'll be
happy to post.
--Peter
Peter Kieser wrote:
>Hello guys,
>
>I'm not quite sure if this is the right list to address this to, as it's partly
>a performance problem and partly otherwise.
>
>I have a FreeBSD machine acting as a router (doing approx. 15-25Mbit/s of
>traffic (lot's of small packets, about 45,000 pps)), however I'm currently
>running into issues where one, or both of the NICs will stop transmitting
>traffic. When I go onto the machine, and try to ping something I get "No buffer
>space available"
>
>The nics are if_dc, this is a stock FreeBSD 5.4-RELEASE installation (no
>firewall or anything):
>
>Here's my /etc/sysctl.conf:
>
>net.inet.ip.rtexpire=1800
>net.inet.ip.rtminexpire=1800
>kern.maxfiles=32768
>kern.maxfilesperproc=32768
>kern.ipc.somaxconn=32767
>net.inet.tcp.sendspace=256000
>net.inet.tcp.recvspace=256000
>kern.ipc.maxsockbuf=2097152
>net.inet.ip.fastforwarding=1
>net.inet.tcp.rfc1323=1
>net.link.ether.inet.max_age=600
>net.inet.tcp.msl=7500
>net.inet.ip.fw.dyn_udp_lifetime=10
>net.inet.ip.fw.dyn_buckets=1024
>
>And here's my /boot/loader.conf:
>
>kern.ipc.maxsockets="163840"
>kern.maxusers="2048"
>
>Is there anythign I'm overlooking that would be causing the machine to lockup
>like this?
>
>--Peter
>
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>
>
>
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- Previous message: T.D.Wipnet (H.M.): "Re: Performance/lockup issues with FreeBSD as a router"
- In reply to: Peter Kieser: "Performance/lockup issues with FreeBSD as a router"
- Next in thread: Ivan Voras: "Re: Performance/lockup issues with FreeBSD as a router (followup)"
- Reply: Ivan Voras: "Re: Performance/lockup issues with FreeBSD as a router (followup)"
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