Date: Sun, 26 Jan 1997 17:50:53 +0100 From: Poul-Henning Kamp <phk@critter.dk.tfs.com> To: Bruce Evans <bde@zeta.org.au> Cc: dg@root.com, swallace@ece.uci.edu, current@FreeBSD.ORG Subject: Re: exec bug Message-ID: <7597.854297453@critter.dk.tfs.com> In-Reply-To: Your message of "Mon, 27 Jan 1997 00:50:34 %2B1100." <199701261350.AAA31786@godzilla.zeta.org.au>
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In message <199701261350.AAA31786@godzilla.zeta.org.au>, Bruce Evans writes: >What is the library malloc()+free() doing to be 5 times slower than >read+lseek()? The kernel malloc() is fast enough to use :-). It takes >a couple of usec for small allocations. You're timing the initialization and allocation of the "page table". Try adding free(malloc(1)); before you take the first timestamp. -- Poul-Henning Kamp | phk@FreeBSD.ORG FreeBSD Core-team. http://www.freebsd.org/~phk | phk@login.dknet.dk Private mailbox. whois: [PHK] | phk@tfs.com TRW Financial Systems, Inc. Power and ignorance is a disgusting cocktail.
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