Date: Mon, 14 Jan 2002 02:03:05 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Alfred Perlstein <bright@mu.org> Cc: smp@freebsd.org Subject: RE: witness speedups? Message-ID: <XFMail.020114020305.jhb@FreeBSD.org> In-Reply-To: <20020113160442.U7984@elvis.mu.org>
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On 14-Jan-02 Alfred Perlstein wrote: > Is there anything you can do to speed up witness a bit? > > Can't you add some table structures for things like find_instance() > to reduce the overhead of witness? You can use WITNESS_SKIPSPIN to turn off checking on spinlocks which should help a bit since they are acquried fairly often. What table structures do you mean for find_instance()? find_instance() is basically searching a per-thread linked-list of held locks (well, not a true linked-list since it uses buckets to try and save on memory). -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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