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https://windtear.net/archives/2004/07/04/000301.html
NAME
vmstat - Report virtual memory statistics
SYNOPSIS
vmstat [-n] [delay [ count]]
vmstat [-V]
DESCRIPTION
vmstat reports information about processes, memory, pag-
ing, block IO, traps, and cpu activity.
The first report produced gives averages since the last
reboot. Additional reports give information on a sampling
period of length delay. The process and memory reports
are instantaneous in either case.
FIELD DESCRIPTIONS
Procs
r: The number of processes waiting for run time.
b: The number of processes in uninterruptable sleep.
w: The number of processes swapped out but otherwise runnable. This
field is calculated, but Linux never desperation swaps.
Memory
swpd: the amount of virtual memory used (kB).
free: the amount of idle memory (kB).
buff: the amount of memory used as buffers (kB).
Swap
si: Amount of memory swapped in from disk (kB/s).
so: Amount of memory swapped to disk (kB/s).
IO
bi: Blocks sent to a block device (blocks/s).
bo: Blocks received from a block device (blocks/s).
System
in: The number of interrupts per second, including the clock.
cs: The number of context switches per second.
CPU
These are percentages of total CPU time.
us: user time
sy: system time
id: idle time
% vmstat
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 0 68636 7464 13108 41340 1 1 4 9 21 1 2 1 5
% vmstat 1
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 68636 7492 13108 41340 1 1 4 9 21 1 2 1 5
0 0 0 68636 7492 13108 41340 0 0 0 0 332 166 2 5 93
0 0 1 68636 7492 13108 41340 0 0 0 0 223 87 3 2 95
0 0 0 68636 7492 13116 41336 0 0 0 56 363 201 2 9 90
0 0 0 68636 7492 13116 41336 0 0 0 0 304 152 2 6 92
%
NAME
sar - Collect, report, or save system activity information.
SEE ALSO
sadc(8), sa1(8), sa2(8), isag(1), mpstat(1), iostat(1), vmstat(8)
% sar
Linux 2.4.20-28.7 (vpn) 07/05/2004
12:00:00 AM CPU %user %nice %system %idle
12:10:00 AM all 8.56 0.00 0.43 91.01
12:20:00 AM all 1.23 0.00 0.41 98.36
12:30:00 AM all 0.77 0.00 0.22 99.01
12:40:00 AM all 0.13 0.00 0.20 99.67
12:50:00 AM all 0.08 0.00 0.15 99.77
01:00:00 AM all 0.10 0.00 0.16 99.74
01:10:00 AM all 0.13 0.00 0.21 99.67
01:20:00 AM all 0.68 0.00 0.29 99.03
01:30:00 AM all 0.08 0.00 0.17 99.75
01:40:00 AM all 0.11 0.00 0.15 99.74
01:50:00 AM all 0.09 0.00 0.16 99.75
02:00:00 AM all 0.43 0.00 0.16 99.41
02:10:00 AM all 0.16 0.00 0.16 99.69
02:20:00 AM all 1.20 0.00 0.41 98.39
02:30:00 AM all 0.09 0.00 0.15 99.76
02:40:00 AM all 0.17 0.00 0.15 99.67
02:50:00 AM all 0.11 0.00 0.14 99.75
03:00:00 AM all 0.10 0.00 0.20 99.70
03:10:00 AM all 0.13 0.00 0.14 99.73
03:20:00 AM all 0.30 0.00 0.22 99.48
03:30:00 AM all 0.08 0.00 0.15 99.77
03:40:00 AM all 0.13 0.00 0.18 99.69
03:50:00 AM all 0.12 0.00 0.29 99.59
04:00:00 AM all 0.21 0.00 1.00 98.79
04:10:00 AM all 0.59 0.21 2.11 97.10
04:20:01 AM all 0.60 0.36 2.88 96.16
04:30:00 AM all 0.19 0.00 0.97 98.85
04:40:00 AM all 0.19 0.00 0.76 99.05
04:50:00 AM all 0.09 0.00 0.21 99.70
05:00:00 AM all 0.08 0.00 0.17 99.75
05:10:00 AM all 0.13 0.00 0.19 99.69
05:20:00 AM all 1.20 0.00 0.42 98.38
05:30:00 AM all 0.08 0.00 0.20 99.72
05:40:00 AM all 0.11 0.00 0.17 99.72
05:40:00 AM CPU %user %nice %system %idle
05:50:00 AM all 0.10 0.00 0.15 99.75
06:00:01 AM all 17.70 0.00 10.09 72.22
06:10:00 AM all 0.10 0.00 0.06 99.84
06:20:00 AM all 1.30 0.00 0.30 98.40
06:30:00 AM all 0.09 0.00 0.03 99.89
06:40:00 AM all 0.09 0.00 0.04 99.87
06:50:00 AM all 0.09 0.00 0.02 99.90
07:00:00 AM all 0.09 0.00 0.02 99.89
07:10:00 AM all 0.11 0.00 0.06 99.82
07:20:00 AM all 0.37 0.00 0.16 99.47
07:30:00 AM all 0.10 0.00 0.09 99.81
07:40:00 AM all 0.10 0.00 0.05 99.85
07:50:00 AM all 0.08 0.00 0.04 99.88
08:00:00 AM all 0.09 0.00 0.09 99.82
08:10:01 AM all 0.16 0.00 0.16 99.68
08:20:00 AM all 0.43 0.00 0.43 99.14
08:30:00 AM all 0.21 0.00 0.26 99.53
08:40:00 AM all 0.19 0.00 0.30 99.51
08:50:01 AM all 0.39 0.00 0.24 99.36
09:00:01 AM all 3.39 0.00 0.45 96.16
09:10:00 AM all 0.25 0.00 0.37 99.38
09:20:00 AM all 4.37 0.00 1.04 94.58
09:30:00 AM all 0.90 0.00 0.44 98.65
09:40:00 AM all 0.19 0.00 0.40 99.42
09:50:00 AM all 0.17 0.00 0.23 99.59
10:00:00 AM all 0.26 0.00 0.52 99.22
10:10:00 AM all 0.33 0.00 0.59 99.08
10:20:00 AM all 1.14 0.00 0.73 98.12
10:30:00 AM all 0.31 0.00 0.89 98.81
10:40:01 AM all 0.31 0.00 0.73 98.96
10:50:00 AM all 0.28 0.00 0.74 98.98
11:00:00 AM all 0.28 0.00 0.77 98.95
11:10:00 AM all 3.65 0.00 1.38 94.98
11:20:00 AM all 1.42 0.00 0.99 97.59
11:20:00 AM CPU %user %nice %system %idle
11:30:00 AM all 0.37 0.00 0.72 98.91
11:40:00 AM all 0.29 0.00 0.48 99.23
11:50:01 AM all 0.28 0.00 0.49 99.23
12:00:00 PM all 0.16 0.00 0.21 99.63
12:10:00 PM all 0.32 0.00 0.22 99.45
12:20:00 PM all 1.72 0.00 0.52 97.76
12:30:01 PM all 0.11 0.00 0.13 99.76
12:40:00 PM all 0.12 0.00 0.14 99.73
12:50:00 PM all 0.14 0.00 0.18 99.69
01:00:00 PM all 0.11 0.00 0.20 99.69
01:10:00 PM all 0.17 0.00 0.23 99.60
01:20:00 PM all 0.76 0.00 0.55 98.69
01:30:00 PM all 0.86 0.00 0.42 98.72
01:40:00 PM all 0.18 0.00 0.25 99.57
01:50:00 PM all 0.20 0.00 0.26 99.54
02:00:00 PM all 0.25 0.00 0.30 99.45
02:10:00 PM all 0.24 0.00 0.30 99.46
02:20:00 PM all 1.11 0.00 0.56 98.33
02:30:00 PM all 0.33 0.00 1.81 97.86
02:40:01 PM all 4.40 0.00 2.27 93.34
02:50:00 PM all 6.60 0.00 0.59 92.80
03:00:00 PM all 0.34 0.00 1.11 98.55
03:10:00 PM all 0.48 0.00 1.72 97.81
03:20:01 PM all 1.82 0.00 1.95 96.23
03:30:00 PM all 0.72 0.00 0.38 98.90
03:40:00 PM all 0.33 0.00 0.50 99.17
03:50:00 PM all 0.19 0.00 0.94 98.87
04:00:00 PM all 0.30 0.00 1.25 98.45
04:10:00 PM all 0.26 0.00 1.18 98.56
04:20:00 PM all 0.67 0.00 0.70 98.63
04:30:00 PM all 0.21 0.00 0.31 99.49
04:40:00 PM all 0.29 0.00 0.41 99.29
04:50:00 PM all 0.28 0.00 0.43 99.29
05:00:00 PM all 0.23 0.00 0.29 99.47
05:00:00 PM CPU %user %nice %system %idle
05:10:01 PM all 0.18 0.00 0.21 99.61
05:20:00 PM all 0.60 0.00 0.49 98.92
05:30:00 PM all 0.13 0.00 0.18 99.69
05:40:00 PM all 0.93 0.00 0.25 98.82
05:50:00 PM all 0.21 0.00 0.84 98.95
06:00:00 PM all 6.59 0.00 1.53 91.87
06:10:00 PM all 0.14 0.00 0.93 98.93
06:20:00 PM all 0.48 0.00 0.98 98.54
06:30:01 PM all 0.11 0.00 1.04 98.85
06:40:00 PM all 0.15 0.00 1.19 98.67
06:50:00 PM all 0.12 0.00 1.30 98.58
07:00:00 PM all 0.29 0.00 1.21 98.50
07:10:00 PM all 0.25 0.00 1.17 98.58
07:20:00 PM all 1.24 0.00 1.41 97.35
07:30:00 PM all 0.20 0.00 1.14 98.66
07:40:00 PM all 0.24 0.00 1.21 98.55
07:50:00 PM all 0.14 0.00 1.09 98.77
08:00:00 PM all 0.11 0.00 1.00 98.89
08:10:00 PM all 0.16 0.00 1.00 98.83
08:20:00 PM all 0.40 0.00 1.19 98.41
08:30:00 PM all 0.11 0.00 1.07 98.82
08:40:00 PM all 0.14 0.00 1.04 98.83
08:50:00 PM all 0.12 0.00 0.98 98.90
09:00:01 PM all 0.11 0.00 1.08 98.81
09:10:00 PM all 0.34 0.00 1.08 98.58
09:20:00 PM all 0.67 0.00 1.23 98.10
09:30:00 PM all 0.27 0.00 1.04 98.69
09:40:00 PM all 0.15 0.00 0.98 98.88
09:50:01 PM all 0.54 0.00 0.47 98.99
10:00:00 PM all 0.10 0.00 0.47 99.44
10:10:00 PM all 0.19 0.00 1.10 98.71
10:20:00 PM all 4.01 0.00 1.59 94.40
10:30:00 PM all 0.30 0.00 1.07 98.63
10:40:00 PM all 0.20 0.00 1.03 98.77
10:40:00 PM CPU %user %nice %system %idle
10:50:00 PM all 0.10 0.00 1.10 98.80
11:00:00 PM all 0.08 0.00 1.07 98.84
Average: all 0.74 0.00 0.69 98.57
% mpstat
Linux 2.4.20-28.7 (vpn) 07/05/2004
11:03:53 PM CPU %user %nice %system %idle intr/s
11:03:53 PM all 2.87 0.00 1.34 95.78 450.60
% iostat
Linux 2.4.20-28.7 (vpn) 07/05/2004
avg-cpu: %user %nice %sys %idle
2.87 0.00 1.34 95.78
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
dev3-0 17.14 177.79 186.81 283366110 297754702
% top
11:04pm up 18 days, 10:45, 3 users, load average: 0.00, 0.00, 0.00
91 processes: 89 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: 0.1% user, 1.3% system, 0.0% nice, 1.4% idle
Mem: 512416K av, 504560K used, 7856K free, 0K shrd, 81836K buff
Swap: 530104K av, 150636K used, 379468K free 262792K cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
31649 root 12 0 1068 1068 836 R 0.9 0.2 0:00 top
1 root 4 0 468 424 404 S 0.0 0.0 0:04 init
2 root 8 0 0 0 0 SW 0.0 0.0 0:00 keventd
3 root 19 19 0 0 0 SWN 0.0 0.0 0:02 ksoftirqd_CPU0
4 root 9 0 0 0 0 SW 0.0 0.0 0:07 kswapd
5 root 9 0 0 0 0 SW 0.0 0.0 0:00 kscand/DMA
6 root 13 0 0 0 0 SW 0.0 0.0 12:31 kscand/Normal
7 root 9 0 0 0 0 SW 0.0 0.0 0:00 kscand/HighMem
8 root 9 0 0 0 0 SW 0.0 0.0 0:00 bdflush
9 root 9 0 0 0 0 SW 0.0 0.0 1:40 kupdated
10 root -1 -20 0 0 0 SW< 0.0 0.0 0:00 mdrecoveryd
15 root 9 0 0 0 0 SW 0.0 0.0 0:11 kjournald
134 root -1 -20 0 0 0 SW< 0.0 0.0 0:22 raid1d
135 root 19 19 0 0 0 SWN 0.0 0.0 0:38 raid1syncd
151 root 9 0 0 0 0 SW 0.0 0.0 0:00 kjournald
153 root 9 0 0 0 0 SW 0.0 0.0 0:00 kreiserfsd
423 root 9 0 0 0 0 SW 0.0 0.0 0:00 eth0
512 root 9 0 0 0 0 SW 0.0 0.0 0:00 eth1
584 root 9 0 672 484 480 S 0.0 0.0 0:00 safe_mysqld
606 root 9 0 556 512 472 S 0.0 0.0 0:04 syslogd
625 root 9 0 444 432 380 S 0.0 0.0 0:00 klogd
651 mysql 9 0 4224 1476 1156 S 0.0 0.2 0:00 mysqld
656 mysql 5 0 4224 1476 1156 S 0.0 0.2 0:00 mysqld
657 mysql 9 0 4224 1476 1156 S 0.0 0.2 0:00 mysqld
658 mysql 9 0 4224 1476 1156 S 0.0 0.2 0:00 mysqld
763 root 9 0 4240 508 504 S 0.0 0.0 0:00 squid
765 squid 13 0 122M 109M 1052 S 0.0 21.8 742:31 squid
771 root 8 0 1112 560 464 S 0.0 0.1 0:00 smbd
776 squid 9 0 328 312 280 S 0.0 0.0 1:45 unlinkd
% free
total used free shared buffers cached
Mem: 512416 501720 10696 0 82016 259108
-/+ buffers/cache: 160596 351820
Swap: 530104 150636 379468
%
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