From: David Matinyarare (d.matinyarare@piorin.gov.pl)
Date: Wed May 12 2004 - 02:08:42 EDT
I have been trying the net but without avail for a full clear
information (explanation) of the fields in the "vmstat 5" output and
"prstat -a" output. Of late my system have been performing badly and ran
"vmstat 5". The output which I got is as follows:
procs memory page disk faults
cpu
r b w swap free re mf pi po fr de sr f0 s0 s1 s2 in sy cs us
sy id
55 0 0 7867392 1323736 7 89 2 0 0 0 0 0 0 0 9 536 1227 334 98
2 0
53 0 0 7867760 1323816 0 0 2 0 0 0 0 0 5 0 7 625 1576 479 97
3 0
51 0 0 7867760 1323784 0 0 4 0 0 0 0 0 0 0 5 558 1838 465 98
2 0
52 0 0 7866312 1322960 18 210 4 0 0 0 0 0 1 0 7 671 2390 530 95
5 0
46 0 0 7866440 1323152 17 201 4 0 0 0 0 0 1 0 6 927 1878 595 97
3 0
43 0 0 7866480 1322856 8 104 5 0 0 0 0 0 0 0 19 808 2535 661 96
4 0
36 0 0 7867096 1323104 33 370 4 1 1 0 0 0 0 0 9 964 2551 659 95
5 0
42 0 0 7865824 1321944 8 140 8 0 0 0 0 0 0 0 13 673 2605 575 97
3 0
37 0 0 7867248 1323056 0 0 1 0 0 0 0 0 3 0 7 661 2341 477 95
5 0
34 0 0 7867248 1323040 0 0 5 0 0 0 0 0 0 0 6 671 2977 510 96
4 0
24 0 0 7867248 1322864 6 0 51 0 0 0 0 0 1 0 58 961 1621 708 98
2 0
21 0 0 7867248 1322680 9 98 24 0 0 0 0 0 0 0 77 1008 1067 634 98
2 0
14 0 0 7867248 1322616 2 0 16 0 0 0 0 0 0 0 69 930 1155 660 98
2 0
16 0 0 7866816 1322456 17 200 9 1 1 0 0 0 3 0 55 990 1589 737 94
6 0
29 0 0 7867040 1322264 30 176 13 0 0 0 0 0 0 0 13 963 5145 830 95
5 0
26 0 0 7866776 1321968 18 196 86 3 3 0 0 0 1 0 12 751 4172 637 96
4 0
22 0 0 7867208 1322032 19 204 8 0 0 0 0 0 0 0 6 1013 4015 985 94
6 0
13 0 0 7867120 1321888 8 100 8 0 0 0 0 0 0 0 3 1016 1907 1036 97
3 0
13 0 0 7867104 1321368 317 100 2340 0 0 0 0 0 0 0 59 1102 1923 1086 96
4 0
Well there is a lot of processes waiting to run, that means the number
of CPUs (processors) is low. What about the "re" and "mf" fields? There
are page reclaim and small faults, then what? What clear performance
leak is it showing? There is also the field under disk ..."s2". What is
this field telling me? Also the field "faults" in, sy, cs. Are they
surpose to be high as they are?
When I run prstat I get something of the nature, as below
NPROC USERNAME SIZE RSS MEMORY TIME CPU
55 xxxxxxxx 64G 63G 100% 5:21.02 69%
What does 100% mean here under MEMORY?
If there any of you could help me to understand the vmstat and prstat
out fields, then I would be very grateful. Reference to documents/links
are welcome also.
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