Date: Fri, 14 Apr 2006 13:03:51 -0700 From: Drew Tomlinson <drew@mykitchentable.net> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Excessive Interrupts? Message-ID: <44400027.3010503@mykitchentable.net>
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I have FreeBSD 6.0-RELEASE installed on dual P3-600 system with 768 MB
of RAM. The system seems sluggish but loads are not high. I uses
'systat' in 'vmstat' mode and noticed what might be a lot of
interrupts. Here is the output:
2 users Load 0.02 0.04 0.02 Apr 14 12:58
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 146632 8224 363656 17868 33356 count
All 759448 38200 17236656 78764 pages
zfod Interrupts
Proc:r p d s w Csw Trp Sys Int Sof Flt cow 4005 total
4101 407 4 61 156 3 159624 wire 3:
sio1
178376 act 4:
sio0
0.2%Sys 0.0%Intr 0.1%User 0.0%Nice 99.7%Idl 391908 inact 6:
fdc0
| | | | | | | | | | 32036 cache
14: ata
1320 free
15: ata
daefr
16: fwo
Namei Name-cache Dir-cache prcfr
17: isp
Calls hits % hits % react 1
18: ahc
23 19 83 pdwak
19: fxp
pdpgs 2002
cpu0: time
Disks ad0 ad1 da0 da1 da2 da3 sa0 intrn 2002
cpu1: time
KB/t 0.00 0.00 6.67 0.00 0.00 0.00 0.00 87680 buf
tps 0 0 1 0 0 0 0 19 dirtybuf
MB/s 0.00 0.00 0.00 0.00 0.00 0.00 0.00 53807 desiredvnodes
% busy 0 0 0 0 0 0 0 17984 numvnodes
Showing vmstat, refresh every 5 seconds. 10797
I watched it for a while and the cpus are always around 2000 each. Is
this high? I Googled but did not find any info on what is considered
excessive. Does anyone see anything of concern?
Thanks,
Drew
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