Date: Mon, 29 Jan 1996 12:54:31 +1100 From: Bruce Evans <bde@zeta.org.au> To: dyson@freebsd.org Cc: current@freebsd.org Subject: too many cached pages for profiled kernel Message-ID: <199601290154.MAA03073@godzilla.zeta.org.au>
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I booted a profiling kernel by mistake and was surprised when it was
extremely slow because of heavy swapping. The profile buffers take
1.7MB and `Cache' takes 2.5MB so an 8MB system was reduced to < 4MB.
I've never seen so much memory allocated for `Cache' before, and the
same profiling kernel runs normally (without anything in `Cache') on
a 16MB system.
`68Kout' in the top output should be formatted better.
Bruce
load averages: 0.14, 0.14, 0.09 09:57:13
19 processes: 1 running, 18 sleeping
Cpu states: 1.4% user, 0.0% nice, 18.8% system, 4.8% interrupt, 74.9% idle
Mem: 272K Active, 12K Inact, 3360K Wired, 2488K Cache, 509K Buf, 60K Free
Swap: 33M Total, 6736K Used, 27M Free, 20% Inuse 68Kout
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
217 bde 30 0 292K 264K RUN 0:01 5.33% 3.05% top
215 root 10 0 844K 28K wait 0:00 5.47% 0.76% <bash>
164 bde 10 0 844K 28K wait 0:01 0.77% 0.57% <bash>
218 root 18 0 136K 20K pause 0:00 0.00% 0.00% <sleep>
119 root 18 0 236K 12K pause 0:00 0.00% 0.00% <cron>
26 root 18 0 140K 12K pause 0:00 0.00% 0.00% <adjkerntz>
163 bde 10 0 844K 28K wait 0:03 0.00% 0.00% <bash>
1 root 10 0 180K 12K wait 0:00 0.00% 0.00% <init>
108 root 10 0 144K 12K nfsidl 0:00 0.00% 0.00% <nfsiod>
109 root 10 0 144K 12K nfsidl 0:00 0.00% 0.00% <nfsiod>
107 root 10 0 144K 12K nfsidl 0:00 0.00% 0.00% <nfsiod>
106 root 10 0 144K 12K nfsidl 0:00 0.00% 0.00% <nfsiod>
165 root 3 0 156K 20K ttyin 0:00 0.00% 0.00% <getty>
166 root 3 0 156K 20K ttyin 0:00 0.00% 0.00% <getty>
97 daemon 2 0 176K 16K select 0:00 0.00% 0.00% <portmap>
124 root 2 0 480K 12K accept 0:00 0.00% 0.00% <sendmail>
121 root 2 0 192K 12K select 0:00 0.00% 0.00% <lpd>
112 root 2 0 192K 12K select 0:01 0.00% 0.00% <inetd>
---
2 users Load 0.21 0.17 0.10 Mon Jan 29 09:58
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER Interrupts
Tot Share Tot Share Free in out in out 240 total
Act 2068 1020 432 56 2484 count 3 99 clk0 irq0
All 6136 4016 1484 308 pages 3 127 rtc0 irq8
cow fdc0 irq6
Proc:r p d s w Csw Trp Sys Int Sof Flt zfod 14 wdc0 irq14
2 4 21 13 7 244 10 11 3384 wire sc0 irq1
248 act sio1 irq3
3.3%Sys 0.7%Intr 0.3%User 0.0%Nice 95.7%Idl 72 inact ed0 irq15
| | | | | | | | | | 2428 cache
== 60 free
daefr
Namei Name-cache Proc-cache prcfr
Calls hits % hits % 11 react
10 pdwake
2408 pdpgs
Discs fd1 wd0 intrn
seeks 3 528 buf
xfers 3
blks 7
msps 7.3
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