problems with IRQ
Alexander Best
arundel at freebsd.org
Thu Oct 6 16:17:09 UTC 2011
On Thu Oct 6 11, KES wrote:
> system work fine, but systat -v show wrong results in compare with vmstat -i
> seems counter overflow or so..
i'd rather suspect that systat(1) is querying different variables/structures
than vmstat(8). their output is different on my system too and after only a few
hours of uptime and very little interrupts, i would rule out a counter
overflow.
cheers.
alex
>
> systat -v
> 2 users Load 0.95 1.13 1.15 Oct 6 17:36
>
> Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
> Tot Share Tot Share Free in out in out
> Act 342596 6396 813716 9244 1395872 count
> All 527128 10356 3002896 39336 pages
> Proc: Interrupts
> r p d s w Csw Trp Sys Int Sof Flt 31 cow 254k total
> 50 557k 2614 14k 237k 4028 449 127 zfod atkbd0 1
> 2 ozfod 12 ata0 14
> 9.1%Sys 21.7%Intr 1.6%User 0.0%Nice 67.6%Idle 1%ozfod 221k ehci0 16
> | | | | | | | | | | | daefr 2 ehci1 23
> =====++++++++++> 37 prcfr 4130 cpu0:timer
> 42 dtbuf 314 totfr 15799 re0 256
> Namei Name-cache Dir-cache 142271 desvn react 4131 cpu1:timer
> Calls hits % hits % 87941 numvn pdwak 4129 cpu3:timer
> 6158 5762 94 35563 frevn pdpgs 4130 cpu2:timer
> intrn
> Disks ad0 da0 pass0 298480 wire
> KB/t 18.79 0.00 0.00 193600 act
> tps 12 0 0 2103500 inact
> MB/s 0.22 0.00 0.00 9180 cache
> %busy 0 0 0 1386692 free
>
>
> # vmstat -i
> interrupt total rate
> irq1: atkbd0 2536 0
> irq14: ata0 8516926 9
> irq16: ehci0 2233740154 2585
> irq23: ehci1 2594742 3
> cpu0:timer 3562265448 4122
> irq256: re0 2291967374 2652
> cpu1:timer 3562481709 4123
> cpu3:timer 3479157511 4026
> cpu2:timer 3555645238 4115
> Total 18696371638 21638
>
> thank you.
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