La commande 'vmstat' permet de visualiser les performances du système en continu.
Ainsi, la commande 'vmstat 2' donnera une ligne toutes les 2 secondes indiquant la consommation mémoire, l'activité CPU ou encore celle de pagination.
Pour n'avoir que 4 échantillons, il suffit d'ajouter '4' dans la ligne de commande : 'vmstat 2 4 '
# vmstat -s
103435699 total address trans. faults
30435724 page ins
13987369 page outs
405655 paging space page ins
807375 paging space page outs
0 total reclaims
34471297 zero filled pages faults
756530 executable filled pages faults
78899607 pages examined by clock
265 revolutions of the clock hand
28770197 pages freed by the clock
775139 backtracks
4867 free frame waits
0 extend XPT waits
935220 pending I/O waits
44416990 start I/Os
5837606 iodones
1062694073 cpu context switches
24533242 device interrupts
39513095 software interrupts
368176787 decrementer interrupts
3686 mpc-sent interrupts
3686 mpc-receive interrupts
1619174 phantom interrupts
0 traps
8888165505 syscalls
# vmstat -v
1310720 memory pages
1232305 lruable pages
18424 free pages
4 memory pools
333934 pinned pages
80.0 maxpin percentage
20.0 minperm percentage
80.0 maxperm percentage
21.6 numperm percentage
267260 file pages
0.0 compressed percentage
0 compressed pages
21.6 numclient percentage
80.0 maxclient percentage
267255 client pages
0 remote pageouts scheduled
284134 pending disk I/Os blocked with no pbuf
297273 paging space I/Os blocked with no psbuf
2228 filesystem I/Os blocked with no fsbuf
10184 client filesystem I/Os blocked with no fsbuf
664 external pager filesystem I/Os blocked with no fsbuf
0 Virtualized Partition Memory Page Faults
0.00 Time resolving virtualized partition memory page faults
# vmstat -i
priority level type count module(handler)
0 2 hardware 3686 i_mpc_int_handler(157b520)
0 589825 hardware 0 /usr/lib/drivers/planar_pal_chrp(3f69a90)
1 655360 hardware 0 /usr/lib/drivers/vconsdd(41a1998)
3 65699 hardware 2913189 /usr/lib/drivers/pci/goentdd(3fcc9b0)
3 65700 hardware 2697928 /usr/lib/drivers/pci/goentdd(3fcc9b0)
3 655362 hardware 1988499 /usr/lib/drivers/vioentdd(3ff2888)
3 655366 hardware 8905274 /usr/lib/drivers/vioentdd(3ff2888)
3 655378 hardware 6740851 /usr/lib/drivers/vscsi_initdd(4018180)
3 655388 hardware 1288124 /usr/lib/drivers/vscsi_initdd(4018180)
# vmstat -I 2 10
System configuration: lcpu=8 mem=24576MB ent=0.20
kthr memory page faults cpu
-------- ----------- ------------------------ ------------ -----------------------
r b p avm fre fi fo pi po fr sr in sy cs us sy id wa pc ec
1 0 0 5918281 233503 0 2 0 0 0 0 27 4275 762 24 10 65 0 0.12 58.7
1 0 0 5918281 233503 0 6 0 0 0 0 22 655 739 4 5 91 0 0.04 18.0
1 0 0 5918281 233503 1 27 0 0 0 0 107 1278 839 4 15 81 0 0.07 33.7
