Date: Sat, 18 Mar 2006 13:27:27 +0100 From: "OxY" <oxy@field.hu> To: "Chuck Swiger" <cswiger@mac.com> Cc: freebsd-performance@freebsd.org Subject: Re: packet drop with intel gigabit / marwell gigabit Message-ID: <000601c64a87$51d7dee0$0201a8c0@oxy> References: <000a01c64a81$45eb6850$0201a8c0@oxy> <441BF838.1080600@mac.com>
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yeah, i googled these settings, but i put them back to default then! i measured iperf performance, and it showed that the packet drop is depending on the system load.. ----- Original Message ----- From: "Chuck Swiger" <cswiger@mac.com> To: "OxY" <oxy@field.hu> Cc: <freebsd-performance@freebsd.org> Sent: Saturday, March 18, 2006 1:08 PM Subject: Re: packet drop with intel gigabit / marwell gigabit > OxY wrote: >> hi! >> >> i had the packet drop problem with the marwell yukon gigabitcard: >> (system is an amd 2000+xp, 512mb ram, fbsd 6.0-p5) > > Hi-- > > The changes you've made in tuning the sysctls are unreasonable on a > machine with > only 512 MB of RAM; in particular: > >> net.inet.tcp.inflight.max=10737254400 > > ...you don't have 10GB of space for TCP!?! Remove all of the tuning > you've done > and start over with the default values, and then adjust those gradually if > doing > so improves your situation. > >> when the apache ran, with no http, just used to share files and the >> traffic was >> 2-2,5MB/S i had 14-17% packet drop on the gigabit interface.. >> with the sysctl i succesfully pulled it down to 12-14%, but it was >> terrible, >> so i bought an intel pro/1000 gt. >> with this i have 3-6% drop with same traffic load on the other >> interface.. >> when i stop the apache packet drop falls down to 0-0.1%, which is great. >> but with apache it's terrible.. > > Um. What are you measuring? If you start or stop Apache, that should > make no > difference to ICMP ping testing, for example.... > > -- > -Chuck
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