Cooltuner for Solaris Nevada / OpenSolaris? Using T1000 for build server

I'm running some tests on a T1000 with Solaris Nevada b53. I tried to install Cooltuner, but it won't install on a Nevada system. Is there a Nevada version available?

Perhaps the tuning tweaks from Cooltuner have been applied to Solaris Nevada already?

My application is a Solaris build server; the workload consists of

primarily CPU-intensive compiles on a local UFS filesystem without NFS

mounts. I've found that a T1000 behaves pretty much like a 6-core 1GHz

UltraSPARC in this application; CMT doesn't seem to buy a great deal

(about 17-20% in my simple test, which is nothing to sneeze at and a vast

improvement over Intel Hyper-Threading in the same application) but it

clearly indicates that a compilation-intensive workload doesn't scale the

same way a web-server or database-server workload might scale, where

many short-lived threads come and go and thread-switch performance

is at a premium.

Comments?

Thanks -

Dana

[1023 byte] By [danak6jq] at [2007-11-26 11:52:14]
# 1

Hi,

One thing to check with compiling is whether there is sufficient work for all the threads to do. I don't know whether this applies to your set up, but it is quite possible that there are often more threads available than work for the threads to do. One way of testing this would be to set off multiple separate (parallel) builds at the same time and look at the performance of that in comparison with just performing one (parallel) build.

Regards,

Darryl.

djgove at 2007-7-7 12:08:03 > top of Java-index,Open Source Technologies,OpenSPARC...
# 2

Hi Dana,

Right now there's no CoolTuner for Nevada. The good news is that we're seeing reductions in the number of required changes with each update release of Solaris 10.The next release of CoolTuner is expected to be broader in scope (application tuning recommendations as well as Solaris recommendations). Not sure what will happen for Nevada in the short term.

Regards,

Allan

AllanPacker at 2007-7-7 12:08:03 > top of Java-index,Open Source Technologies,OpenSPARC...