Re: Progress on scaling of FreeBSD on 8 CPU systems

On Sun, 25 Feb 2007, Martin Blapp wrote:

It would be really great if we could find "workload owners" who would maintain easy-to-run benchmark configurations and also run them regularly on a fixed hardware configuration over a long time publishing results and testing patches. Kris has done this for SQL benchmarks to great effect,

I'm interested in such a workload test. At my job we run various other servers which have a classic virus/antispam environment. And unfortunatly clamd behaves not very well on FreeBSD (see mails to freebsd-threads), and this happens even on 2-CPU systems.

I think its not very difficult to make a scripted load test, with 2/4/6/8/16/32 scans in parallel, with ULE or BSD scheduler.

As long as it is realistic and reproduceable, it sounds good to me.

Btw: what is the best method to profile a threaded application to see where it spends the most CPU time ?

Try looking at system pmc support -- using system pmcs, you can profile a variety of factors (including CPU use, cache misses, etc) across the whole system (kernel and application), so it's a really neat tool.

Robert N M Watson
Computer Laboratory
University of Cambridge
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Relevant Pages

  • Re: Progress on scaling of FreeBSD on 8 CPU systems
    ... maintain easy-to-run benchmark configurations and also run them regularly on a fixed hardware configuration over a long time publishing results and testing patches. ... And unfortunatly clamd behaves not very well on FreeBSD, and this happens even on 2-CPU systems. ... it spends the most CPU time? ...
    (freebsd-current)
  • Re: Progress on scaling of FreeBSD on 8 CPU systems
    ... maintain easy-to-run benchmark configurations and also run them regularly on a fixed hardware configuration over a long time publishing results and testing patches. ... Kris has done this for SQL benchmarks to great effect, ... clamd behaves not very well on FreeBSD, ...
    (freebsd-current)
  • Re: Progress on scaling of FreeBSD on 8 CPU systems
    ... maintain easy-to-run benchmark configurations and also run them regularly on a fixed hardware configuration over a long time publishing results and testing patches. ... Kris has done this for SQL benchmarks to great effect, ... clamd behaves not very well on FreeBSD, ...
    (freebsd-hackers)
  • Re: Progress on scaling of FreeBSD on 8 CPU systems
    ... maintain easy-to-run benchmark configurations and also run them regularly ... on a fixed hardware configuration over a long time publishing results and ... what is the best method to profile a threaded application to see where ...
    (freebsd-hackers)