Sridhar Samudrala wrote:
On Thu, 2010-04-08 at 17:14 -0700, Rick Jones wrote:
Here are the results with netperf TCP_STREAM 64K guest to host on a
8-cpu Nehalem system.
I presume you mean 8 core Nehalem-EP, or did you mean 8 processor Nehalem-EX?
Yes. It is a 2 socket quad-core Nehalem. so i guess it is a 8 core
Nehalem-EP.
Don't get me wrong, I *like* the netperf 64K TCP_STREAM test, I lik it a lot!-)
but I find it incomplete and also like to run things like single-instance TCP_RR
and multiple-instance, multiple "transaction" (./configure --enable-burst)
TCP_RR tests, particularly when concerned with "scaling" issues.
Can we run multiple instance and multiple transaction tests with a
single netperf commandline?
Do you count a shell for loop as a single command line?
Is there any easy way to get consolidated throughput when a netserver on
the host is servicing netperf clients from multiple guests?
I tend to use a script such as:
ftp://ftp.netperf.org/netperf/misc/runemomniagg2.sh
which presumes that netperf/netserver have been built with:
./configure --enable-omni --enable-burst ...
and uses the CSV output format of the omni tests. When I want sums I then turn
to a spreadsheet, or I suppose I could turn to awk etc.
The TCP_RR test can be flipped around request size for response size etc, so
when I have a single sustem under test, I initiate the netperf commands on it,
targetting netservers on the clients. If I want inbound bulk throughput I use
the TCP_MAERTS test rather than the TCP_STREAM test.
happy benchmarking,
rick jones
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