Date: Sun, 30 Sep 2007 14:27:15 -0700 (PDT) From: Jeff Roberson <jroberson@chesapeake.net> To: Alexander Motin <mav@freebsd.org> Cc: Alfred Perlstein <alfred@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: Kernel thread stack usage Message-ID: <20070930142545.V583@10.0.0.1> In-Reply-To: <46FFF64B.3030700@FreeBSD.org> References: <46FFD850.1040508@FreeBSD.org> <20070930182427.GY53439@elvis.mu.org> <46FFF64B.3030700@FreeBSD.org>
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On Sun, 30 Sep 2007, Alexander Motin wrote: > Alfred Perlstein ?????: >> Not that I know of, but one could defer to queueing once the chain >> gets to a certain length. > > It will not be accurate as different nodes have different stack usage and > also stack partially used (part may be significant) before packet entered > netgraph. Does it really need to be that precise? If you queue every 10 or 20 deep the queueing cost should be substantially amortized and it sounds like this is not a common condition anyway or the stack would already be overflowing with some workloads. Jeff > > -- > Alexander Motin > _______________________________________________ > freebsd-arch@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org" >
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