Re: 2.5.47 scheduler problems?

Mike Galbraith
2002-11-22T12:47:08Z

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At 12:07 PM 11/22/2002 +0100, Mike Galbraith wrote:
>At 12:41 AM 11/22/2002 -0500, Jim Houston wrote:
>
>>I just gave this a spin with. The patches still apply cleanly
>>to linux-2.5.48 and it seems well behaved:-)
>
>It seems a little choppy still for a not swapping load, but greatly improved.
>
>Thanks!

(I put it into virgin 2.5.47 fwiw) I have some very odd behavior. I
wanted to see how the kernel did at make -j30 bzImage on my test box to see
what effect it has on throughput (box is 500 Mhz PIII + 128Mb ram), and get
vmstat output like the attached. I should be roughly 30Mb into swap and
paging heftily at this point.

-Mike

[-- Attachment #2: vmstat.out --]
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procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
b w swpd free buff cache si so bi bo in cs us sy id wa
41 8 764 59940 1596 18484 0 0 4 27 1027 129 90 10 0 0
35 10 764 58932 1604 18616 0 0 120 0 1026 134 92 8 0 0
34 8 764 53540 1608 18804 0 0 29 0 1023 141 87 13 0 0
38 7 764 47780 1616 19300 0 0 10 0 1075 168 92 8 0 0
38 11 764 54476 1616 19684 0 0 8 0 1018 130 90 10 0 0
33 12 764 47596 1632 20048 0 0 14 474 1062 143 89 11 0 0
33 6 764 41564 1636 19412 0 0 88 0 1104 158 90 10 0 0
32 4 764 34940 1640 19728 0 0 93 0 1024 157 91 9 0 0
37 6 764 34652 1640 20012 0 0 38 0 1022 143 93 7 0 0
36 8 764 33196 1648 20108 0 0 18 0 1023 168 89 11 0 0
35 8 764 32668 1652 20528 0 0 8 110 1029 159 91 9 0 0
34 6 764 28364 1664 20852 0 0 84 1 1023 167 92 8 0 0
32 6 764 23140 1664 20608 0 0 4 0 1020 165 93 7 0 0
34 7 764 28372 1664 20424 0 0 12 0 1020 147 93 7 0 0
38 7 764 23476 1668 20480 0 0 45 0 1123 194 93 7 0 0
32 8 764 32988 1668 20952 0 0 4 132 1027 151 94 6 0 0
35 9 764 29260 1672 20332 0 0 4 1 1020 152 89 11 0 0
32 6 764 31100 1672 20688 0 0 0 0 1106 156 92 8 0 0
31 8 764 32076 1680 20264 0 0 108 0 1023 161 91 9 0 0
35 8 764 42332 1684 20836 0 0 17 0 1023 157 86 14 0 0
34 11 764 48916 1688 20752 0 0 52 234 1033 151 88 12 0 0
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
b w swpd free buff cache si so bi bo in cs us sy id wa
37 5 764 45796 1692 20956 0 0 12 1 1020 136 89 11 0 0
32 6 764 46820 1692 20616 0 0 0 0 1017 149 89 11 0 0
34 8 764 46820 1692 20652 0 0 0 0 1017 130 91 9 0 0
31 8 764 41316 1692 20496 0 0 8 0 1083 153 92 8 0 0