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Message-ID: <47037E5C.7090006@sa2c.net>
Date: Wed, 03 Oct 2007 20:34:52 +0900
From: NIIMI Satoshi <sa2c@sa2c.net>
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To: Jeff Roberson <jroberson@chesapeake.net>
References: <20071002165007.D587@10.0.0.1>
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Cc: current@freebsd.org
Subject: Re: ULE/yielding patch for testing.
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Hi,

Jeff Roberson wrote:
> 2)  Restores old sched_yield() behavior from 6.x.  This was changed in 
> -current unintentionally I think.

sched_yield() is now very fast with SCHED_ULE.  On my test, it's faster
than 6.2-REL even with HZ=100.

> Those of you still using 4BSD can also verify that the yield changes 
> don't cause any problems there.

Unfortunately, sched_yield() is still very slow with SCHED_4BSD.

Thanks,
-- 
NIIMI Satoshi