Yes, anything done via sysctl is a system time, this means all I/O, scheduling, etc.
Scott
On Sat, Apr 05, 2003 at 11:31:05PM +0100, Matthew Toseland wrote:
> I run two freenet nodes, one of which is moderately heavily loaded, on
> an Athlon XP 1700+ attached to a cablemodem. They dominate my loadavg.
> Recently I have noticed that I am having extremely high "system" % in
> "top". I checked it out... first, DMA wasn't working, but that is fixed
> now. Then I heard that top may be miscalculating system time... after
> some research I found the wonderful utility "vmstat". Running vmstat 10
> gets something like the attached. Note the "sy" column under the "cpu"
> heading. Can anyone else reproduce this or is it a local problem? Does
> anyone have any ideas as to why freenet causes linux to use such a large
> amount of "system" (i.e. kernel) time? Would reschedules count as system
> time?
>
> BTW, this is with Sun 1.4, using native threads.
> --
> Matthew Toseland
> [EMAIL PROTECTED]/[EMAIL PROTECTED]
> Full time freenet hacker.
> http://freenetproject.org/
> Freenet Distribution Node (temporary) at
> http://80-192-4-36.cable.ubr09.na.blueyonder.co.uk:8889/Iii0fCybKdE/
> ICTHUS.
> procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
> r b swpd free buff cache si so bi bo in cs us sy id wa
> 4 0 75736 7304 117088 495864 2 0 72 325 410 565 20 80 0 0
> 5 0 75736 6768 117340 496096 3 0 25 151 386 748 31 69 0 0
> 3 0 75736 8232 117800 493696 17 0 104 606 539 773 29 71 0 0
> 3 2 75736 7628 118192 494160 0 0 44 266 401 550 13 87 0 0
> 6 0 75736 7104 118256 494568 0 0 41 106 370 453 10 90 0 0
> 3 0 75736 6588 118392 494964 0 0 38 62 377 457 13 87 0 0
> 4 0 75736 8248 118440 493260 0 0 33 480 365 492 22 78 0 0
> 6 0 75736 7860 118564 493524 0 0 26 123 390 556 27 73 0 0
> 4 0 75736 7624 118796 493524 0 0 26 179 385 586 21 79 0 0
> 7 0 75736 8464 118604 492524 0 0 40 616 420 784 28 72 0 0
> 5 0 75736 7688 118864 492908 4 0 42 323 405 778 19 81 0 0
> 7 1 75736 7160 119056 493228 1 0 31 63 362 692 20 80 0 0
> 9 0 75736 6188 119192 493664 2 0 34 168 395 622 19 81 0 0
> 9 0 75736 8216 119568 491680 8 0 34 492 393 878 45 55 0 0
> 4 0 75736 7616 119732 492116 0 0 26 52 354 1298 47 53 0 0
> 6 0 75736 6740 120144 492516 5 0 34 358 425 1174 42 58 0 0
> 9 0 75736 4520 120264 494588 0 0 13 454 352 1005 48 52 0 0
--
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