Date: Thu, 18 Nov 1999 07:38:38 -0800 From: David Greenman <dg@root.com> To: Mike Tancsa <mike@sentex.net> Cc: Greg Lehey <grog@lemis.com>, questions@FreeBSD.ORG Subject: Re: Increasing disk cache Message-ID: <199911181538.HAA15709@implode.root.com> In-Reply-To: Your message of "Thu, 18 Nov 1999 10:28:55 EST." <3.0.5.32.19991118102855.024c7380@staff.sentex.ca>
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>At 10:27 AM 11/18/99 -0500, Greg Lehey wrote: >>On Thursday, 18 November 1999 at 0:39:06 -0500, Mike Tancsa wrote: >>> At 12:17 AM 11/18/99 , Dan Nelson wrote: >>>> In the last episode (Nov 17), Mike Tancsa said: >>>>> Mem: 23M Active, 99M Inact, 16M Wired, 8664K Cache, 8344K Buf, 40M Free >>>>> >>>>> Would it make sense to tune my kernel so that the disk cache is larger ? >>>>> If so, where would I tune this. >>>> >>>> FreeBSD uses all available RAM as a disk cache. The Inact, Cache, and >>>> Buf amounts are all "cache" memory, just varying types. I'm sort of >>>> surprised about the 40M of Free memory, though. Most systems hover at >>>> < 5M free. Did a memory-hogging process (Netscape, say) just exit? >>> >>> No. Actually, that was taken 1hr after doing a make world and reboot. >> >>What does it look like now? > >Much better now it seems. > >Mem: 20M Active, 135M Inact, 16M Wired, 10M Cache, 8349K Buf, 5516K Free >Swap: 512M Total, 512M Free > >Is the "Inact" figure actually used as disk cache then ? Yes, all of active, inact, and cache can contain cached file pages. These are just different page queues and don't indicate the nature of the pages on them (unfortunately - makes figuring out what's going on difficult). -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org Creator of high-performance Internet servers - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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