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Date:      Thu, 4 Apr 2002 21:17:27 -0700 (MST)
From:      John Regehr <regehr@cs.utah.edu>
To:        Julian Elischer <julian@elischer.org>
Cc:        Mike Silbersack <silby@silby.com>, <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: Linuxthreads on Linux vs FreeBSD performance question
Message-ID:  <20020404211315.O14309-100000@beryl.cs.utah.edu>
In-Reply-To: <Pine.LNX.4.21.0204032331160.24874-100000@famine.cs.utah.edu>

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> > > Have you tried benchmarking process to process context switch times to see
> > > if the results are similar?

I put a quartet of histograms here:

  http://www.cs.utah.edu/~regehr/freebsd_ctx_quantum.eps
  http://www.cs.utah.edu/~regehr/freebsd_ctx_yield.eps

that demonstrate, basically, what Terry said: on FreeBSD 4.5 context
switches between Linuxthreads cost the same as between processes.

John



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