Re: Interpreting perf stat on netperf and netserver
From: Jean-Michel Hautbois <hidden>
Date: 2012-01-20 07:20:30
2012/1/19 Rick Jones [off-list ref]:
On 01/19/2012 12:29 AM, Jean-Michel Hautbois wrote:quoted
2012/1/18 Rick Jones[off-list ref]:quoted
On 01/18/2012 03:33 AM, Jean-Michel Hautbois wrote:quoted
Hi all, I am currently using netperf/netserver in order to characterize a benet emulex network device on a machine with 2 Xeon5670. I am using the latest linux kernel from git (3.2.0+). I am facing several issues, and I am trying to understand the following perf stat launched on netserver : Performance counter stats for process id '5043':If you aren't already you may want to gather system-wide data as well - not everything networking is guaranteed to run in the netserver's (or netperf's) context. Might also be good to include the netperf command line driving that netserver. That will help folks know if the netserver is receiving data (_STREAM), sending data (_MAERTS) or both (_RR) (though perhaps that can be gleaned from the routine names in the profile.Well, I am only launching netserver without any parameter.The netperf command line, not netserver :) The netperf command line will tell us what the netserver was asked to and was presumably doing at the time the profile was taken.
I launched it using netperf -H 192.168.2.1 -t UDP_STREAM -f m -- -m 4000 The mtu is set to 4096. JM