Date: Wed, 02 Sep 2009 02:00:16 +0200 From: Per olof Ljungmark <peo@intersonic.se> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: memory usage displsy Message-ID: <4A9DB590.6080605@intersonic.se> In-Reply-To: <20090901204147.GC2855@dan.emsphone.com> References: <4A9D8057.8020307@intersonic.se> <20090901162931.d85ec256.wmoran@potentialtech.com> <20090901204147.GC2855@dan.emsphone.com>
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Dan Nelson wrote:
> In the last episode (Sep 01), Bill Moran said:
>> In response to Per olof Ljungmark <peo@intersonic.se>:
>>> What is a good way to find out how memory is used? Have a 6.4 box where
>>> memory is used by something but I fail to see what is using it - tried
>>> different switches to ps(1), tried the stat tools but a big chunk of
>>> memory does not show at all.
>>>
>>> A proper tool for analyzing memory usage "live", this is a production
>>> box?
>> I've always been able to get what I need from top. You can do -o res to
>> sort by resident memory usage, which helps.
>
> ps will sort by memory usage when given the -m flag. Also check ipcs -a to
> see if there are any sysv shared memory segments hanging arnound. If you
> don't see anything using the memory, where are you seeing that "something"
> is using it?
>
...and here is top output after I stopped Postfix, slapd and Cyrus-IMAP.
Still over 3G Active.
last pid: 10278; load averages: 0.03, 0.02, 0.00
up 93+02:50:16 01:57:35
45 processes: 1 running, 44 sleeping
CPU: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 3057M Active, 312M Inact, 228M Wired, 144M Cache, 112M Buf, 81M Free
Swap: 4096M Total, 80K Used, 4096M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
647 root 4 20 0 3372K 1508K kserel 110:35 0.00% apcupsd
831 root 3 20 0 5008K 1920K kserel 58:48 0.00% bacula-fd
480 root 1 96 0 1416K 932K select 25:23 0.00% syslogd
596 bind 1 4 0 6400K 5160K kqread 23:05 0.00% named
709 root 1 96 0 2780K 1484K select 4:26 0.00% ntpd
661 root 1 4 0 3372K 1972K accept 0:53 0.00% saslauthd
660 root 1 20 0 3372K 1972K lockf 0:53 0.00% saslauthd
662 root 1 20 0 3372K 1972K lockf 0:53 0.00% saslauthd
659 root 1 20 0 3372K 1972K lockf 0:53 0.00% saslauthd
657 root 1 20 0 3372K 1972K lockf 0:52 0.00% saslauthd
913 root 1 8 0 1412K 900K nanslp 0:22 0.00% cron
91648 peo 1 96 0 11372K 7572K select 0:04 0.00% sshd
3419 nagios 1 96 0 1380K 960K select 0:01 0.00% nrpe2
91656 root 1 20 0 3880K 1952K pause 0:00 0.00% csh
10243 root 1 96 0 2516K 1604K RUN 0:00 0.00% top
95511 root 1 5 0 4120K 2156K ttyin 0:00 0.00% csh
95504 peo 1 96 0 6296K 2544K select 0:00 0.00% sshd
95502 root 1 4 0 6300K 2540K sbwait 0:00 0.00% sshd
91646 root 1 4 0 6300K 2476K sbwait 0:00 0.00% sshd
10223 root 1 4 0 6300K 2660K sbwait 0:00 0.00% sshd
10232 root 1 5 0 3880K 2044K ttyin 0:00 0.00% csh
91650 peo 1 20 0 3836K 1848K pause 0:00 0.00% csh
95506 peo 1 20 0 3940K 1916K pause 0:00 0.00% csh
10227 peo 1 20 0 3836K 1976K pause 0:00 0.00% csh
906 root 1 96 0 3552K 2016K select 0:00 0.00% sshd
10225 peo 1 96 0 6296K 2664K select 0:00 0.00% sshd
429 root 1 96 0 528K 284K select 0:00 0.00% devd
91654 peo 1 8 0 1804K 1112K wait 0:00 0.00% su
95510 peo 1 8 0 1804K 1168K wait 0:00 0.00% su
10231 peo 1 8 0 1804K 1244K wait 0:00 0.00% su
961 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
962 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
968 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
964 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
966 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
963 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
965 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
967 root 1 5 0 1352K 784K ttyin 0:00 0.00% getty
943 root 1 111 0 1444K 840K select 0:00 0.00% inetd
138 root 1 20 0 1260K 636K pause 0:00 0.00% adjkerntz
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