Date: Mon, 18 Aug 1997 08:57:33 -0400 (EDT) From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: ponds!root.com!dg, ponds!freefall.cdrom.com!freebsd-hackers, ponds!lakes.dignus.com!rivers Subject: Re: "rm" speeds (2.1.7.1 vs. 2.2.1) Message-ID: <199708181257.IAA05973@lakes.dignus.com>
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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. > > > > -DG > > > > David Greenman > > Core-team/Principal Architect, The FreeBSD Project > > > > I'll give it a try! Thanks for pointing it out.. > > I've still got a directory to try it on - the box has been working > overnight (about 9+ hours now) trying to delete it... > That seems to have been the ticket!!! I'm doing an 'rm' right now of that troublesome directory, and I don't hear the tale-tell disk I/O pattern I heard before. It's just merrily spinning along deleteing things... (there was a *big* pause when it started; presumably skipping through those deleted entries...) Thanks everyone! - Dave Rivers -
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