Date: Mon, 18 Aug 1997 11:27:47 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: dg@root.com Cc: ponds!rivers@dg-rtp.dg.com, freebsd-hackers@FreeBSD.ORG Subject: Re: "rm" speeds (2.1.7.1 vs. 2.2.1) Message-ID: <199708181827.LAA15516@phaeton.artisoft.com> In-Reply-To: <199708180204.TAA19951@implode.root.com> from "David Greenman" at Aug 17, 97 07:04:25 pm
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> > Again, f.y.i. - this is a 486dx66 with 24meg of RAM, a typical IDE > >drive (1+gig)... The 2.2.1 kernel has NBUF defined at 128; to see > >if that's the problem... where the 2.1.7 kernel was from the boot floppy > >off of a 2.1.7 CDROM. > > That is the problem. Take out the NBUF= thing from your kernel config file > and rebuild/install the kernel. A system with 24MB of RAM will have about > 600 buffers if it is allowed to dynamically calculate the amount. > What's happening is that the directory is getting pushed out of the cache, > forcing the system to re-read much of it and the inode blocks each time. I think he will find that at 600 buffers, a 20,000 entry directory will still have that problem (625 directory blocks). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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