Date: Wed, 21 Jan 1998 11:53:38 -0600 From: Dan Nelson <dnelson@emsphone.com> To: Costa Morris <costa@cortx.com> Cc: questions@FreeBSD.ORG Subject: Re: ram question Message-ID: <19980121115338.12041@emsphone.com> In-Reply-To: <01bd2692$66e709e0$0cddcfcf@cman.cortx.com>; from "Costa Morris" on Wed Jan 21 12:31:26 GMT 1998 References: <01bd2692$66e709e0$0cddcfcf@cman.cortx.com>
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In the last episode (Jan 21), Costa Morris said: > i have 128MB of ram installed in 2.2.5. i reconfigured the kernel > for the extra ram. > > ie. > options "MAXMEM=(128*1024)" > > when i run a top i get this: > Mem: 72M Active, 6440K Inact, 15M Wired, 20M Cache, 8345K Buf, 11M Free 72+6+15+20+8+11 == 132, which is sorta close 128MB. You can see exactly how much memory FreeBSD detected by running "sysctl hw". > can someone explain to me how to read it. i fugured i should have > more than 11M free. just need to see if all the ram is being used > properly. 11M is actually pretty high. Expect to see from 1-5M in the Free column most of the time. FreeBSD uses free memory as a disk cache (the Cache and Buf fields). All your 'top' display shows is that you probably just rebooted your machine, so FreeBSD hasn't needed to cache more than 28M of data yet. Or you just exited a program that had allocated 10MB of memory. -Dan Nelson dnelson@emsphone.com
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