Date: Tue, 2 Apr 1996 09:45:11 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: bde@zeta.org.au (Bruce Evans) Cc: bde@zeta.org.au, phk@critter.tfs.com, freebsd-current@freefall.freebsd.org, kuku@gilberto.physik.rwth-aachen.de Subject: Re: calcru: negative time: Message-ID: <199604021445.JAA00446@dyson.iquest.net> In-Reply-To: <199604021118.VAA10642@godzilla.zeta.org.au> from "Bruce Evans" at Apr 2, 96 09:18:01 pm
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> > It (actually failing of a more complete test in mi_switch()) seems > to be connected with doing a bunch of disk accesses after the system > has been idle for some time. I suspect vm. I didn't like changing > splimp() in vm to splhigh(). > If there are some times where splhigh() is on for too long, that needs to be changed (we aren't using another interlock mechanism when we should be.) Splhigh is correct for it's intended purpose -- lock out ANY other access to the VM data structures. Splimp is just a hack in it's own right implying that the networking code is the ONLY code in the system that needs potentially concurrent access -- and that is potentially NOT true. John
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