On 04/07/11 19:04, Camaleón wrote:
On Mon, 04 Jul 2011 11:20:18 -0600, ChadDavis wrote:
(...)
When I execute the command:
vmstat 5 5
I get:
procs -----------memory---------- ---swap-- -----io-----system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
2 0 0 5741808 573028 1040628 0 0 122 42 53 1107 4 1 92 4
1 0 0 5747552 573036 1034488 0 0 0 22 14 2522 1 0 99 0
0 0 0 5747460 573060 1034488 0 0 0 32 18 2493 1 0 99 0
0 0 0 5747740 573096 1034488 0 0 0 57 72 4142 1 1 98 0
0 0 0 5747616 573144 1034468 0 0 0 61 20 687 1 0 99 0
Aren't those context switch number pretty high? I realize this may be
all relative, but these numbers are WAY higher than I see in the
reference materials, so . . .
You mean the "cs" column?
sm01@stt008:~$ vmstat 5 5
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 6261340 66836 1082052 0 0 9 37 38 176 1 0 98 0
0 0 0 6261312 66836 1082052 0 0 0 14 73 119 0 0 100 0
0 0 0 6261416 66836 1082052 0 0 0 58 75 108 0 0 100 0
0 0 0 6261568 66836 1082052 0 0 0 25 111 180 0 0 100 0
0 0 0 6261600 66836 1082052 0 0 0 0 101 169 0 0 100 0
Just to compare, I dunno what that means, neither if lower values are
better or worse nor why. Let's see what people has to say on this regard :-)
I get very differing figures for different machines. It seems to relate to CPU
speed.
P4M 1600MHz
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 0 1716 270036 100064 391256 0 0 160 70 184 305 14 4 79 3
0 0 1716 269688 100064 391256 0 0 0 0 283 601 61 8 31 0
0 0 1716 269736 100064 391256 0 0 0 0 146 203 5 1 93 0
0 0 1716 269768 100064 391256 0 0 0 0 174 135 32 3 65 0
0 1 1716 259792 100212 397784 0 0 1332 0 325 737 35 5 30 30
Celeron M 500MHz
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 1356 6140 137712 138576 0 0 24 18 35 13 1 2 95 1
1 0 1356 6900 137716 138576 0 0 0 27 76 37 6 1 93 0
0 0 1356 6908 137716 138580 0 0 0 0 65 29 0 0 99 0
0 0 1356 6916 137720 138580 0 0 0 26 63 33 0 0 100 0
0 0 1356 6916 137728 138584 0 0 0 41 76 34 0 0 99 0
K7 XP3200+
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 34288 224640 53568 980396 0 1 222 758 239 372 13 5 81 1
1 0 34288 222540 53620 982368 0 0 0 471 1157 1922 3 3 93 1
1 0 34288 220308 53660 984576 0 0 0 454 1137 1941 3 2 94 1
0 0 34288 218200 53712 986568 0 0 0 453 1143 1906 3 3 94 0
2 0 34288 216092 53752 988736 0 0 0 489 1138 1936 3 2 94 1
(This was when the system wasn't very busy. When busy, the cs figures were
around 4000)
P1 MMX 166MHz
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 1064 2820 15048 0 0 210 9 119 220 20 24 32 24
0 0 0 1068 2824 15048 0 0 0 3 45 21 0 0 99 0
0 0 0 1084 2824 15048 0 0 0 0 43 16 0 0 100 0
0 0 0 1104 2824 15048 0 0 0 0 42 15 0 0 100 0
0 0 0 1088 2824 15048 0 0 0 0 43 18 0 0 100 0
I don't know if any of this helps.
Dom
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