High nice percentage in top on busybox
Hello,
I cant understand the output of my top, specifically the nice percentage at 96.8%. I know that the nice value of a process is basically it's priority and I think a high nice% means the CPU time is taken running task(s) with high nice value (low priority). But which process is taking the cycles? my top output is: Mem: 17284K used, 108368K free, 0K shrd, 5220K buff, 8980K cached CPU: 0.1% usr 0.3% sys 0.0% nic 99.4% idle 0.0% io 0.0% irq 0.0% sirq Load average: 0.00 0.04 0.12 1/19 1006 PID PPID USER STAT VSZ %MEM CPU %CPU COMMAND 1006 987 root R 1568 1.2 0 0.4 top 987 1 root S 1568 1.2 0 0.0 -sh 1 0 root S 1564 1.2 0 0.0 init 5 2 root SW< 0 0.0 0 0.0 [khelper] 105 2 root SW< 0 0.0 0 0.0 [kblockd/0] 4 2 root SW< 0 0.0 0 0.0 [events/0] 159 2 root SW 0 0.0 0 0.0 [pdflush] 2 0 root SW< 0 0.0 0 0.0 [kthreadd] 3 2 root SW< 0 0.0 0 0.0 [ksoftirqd/0] 116 2 root SW< 0 0.0 0 0.0 [khubd] 119 2 root SW< 0 0.0 0 0.0 [kseriod] 158 2 root SW 0 0.0 0 0.0 [pdflush] 160 2 root SW< 0 0.0 0 0.0 [kswapd0] 161 2 root SW< 0 0.0 0 0.0 [aio/0] 162 2 root SW< 0 0.0 0 0.0 [nfsiod] 163 2 root SW< 0 0.0 0 0.0 [cifsoplockd] 901 2 root SW< 0 0.0 0 0.0 [kpsmoused] 910 2 root SW< 0 0.0 0 0.0 [hid_compat] 916 2 root SW< 0 0.0 0 0.0 [rpciod/0] its a Vortex86SX SBC: Linux TESTPS 2.6.29-090522dee #1 Fri May 22 14:24:06 BST 2009 i486 unknown BusyBox v1.13.2 (2009-02-19 13:51:51 EST) Anyone understand why this nice value is so high and what it means? Thanks for any help. |
You don't have a high nice usage. the nice usage in your post is 0.0%.
The idle process is 99.4% (i.e. nothing being done) The first value is for user (0.1%) the second value is for sys (0.3%) 0.0% for nic 99.4% for idle 0.0% for io 0.0% for irq 0.0% for sirq CPU: is just the label for that row. (I don't know where you got 96.8% from) |
Du-oh!
Thanks, that makes a lot more sense! (the 96.8% came from a different top output I was looking at that had my application running that I thought was the cause of the high nice value, then I saw the same problem without my application..) anyway thanks, I got confused :? |
No worries, we all suffer from it now and then :-)
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