Date: Tue, 14 Mar 1995 14:07:19 -0800 From: David Greenman <davidg@Root.COM> To: roberto@blaise.ibp.fr (Ollivier Robert) Cc: current@FreeBSD.org (Current's list FreeBSD) Subject: Re: MINFREE change to 8% Message-ID: <199503142207.OAA02661@corbin.Root.COM> In-Reply-To: Your message of "Tue, 14 Mar 95 22:58:34 %2B0100." <9503142158.AA08648@blaise.ibp.fr>
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>I've noticed with the change to MINFREE from 5% to 8% that there is >something strange in the ufs/ffs/ffs_alloc.c file : > > case FS_OPTSPACE: > /* > * Allocate an exact sized fragment. Although this makes > * best use of space, we will waste time relocating it if > * the file continues to grow. If the fragmentation is > * less than half of the minimum free reserve, we choose > * to begin optimizing for time. > */ > request = nsize; > if (fs->fs_minfree <= 5 || <<<<<<<< shouldn't 5 be MINFREE instead ?? No. That percentage is chosen to provide a specific level of hysterisis and is not related to the default (MINFREE). -DG
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