====== Infos générales sur la mémoire ======
On utilise la commande //kmeminfo//. Attention ces commandes ne sont pas forcément installées sur toute machine HP-UX, il faut installer les **OnlineDiag**.
root@machine:/$ /usr/contrib/bin/kmeminfo
tool: kmeminfo 5.15
unix: /stand/vmunix 11.23 64bit IA64
core: /dev/kmem live
link: Thu Sep 07 16:47:42 METDST 2006
boot: Thu Nov 9 16:01:04 2006
time: Thu Nov 9 16:28:21 2006
nbpg: 4096 bytes
----------------------------------------------------------------------
Physical memory usage summary (in page/byte/percent):
Physical memory = 1832834 7.0g 100%
Free memory = 839354 3.2g 46%
User processes = 441130 1.7g 24% details with -user
System = 386278 1.5g 21%
Kernel = 215488 841.8m 12% kernel text and data
Dynamic Arenas = 67183 262.4m 4% details with -arena
vx_global_pool = 16144 63.1m 1%
spinlock = 11346 44.3m 1%
vm_pfn2v_arena = 7236 28.3m 0%
VFD_BT_NODE = 3495 13.7m 0%
M_TEMP = 3482 13.6m 0%
Other arenas = 25480 99.5m 1% details with -arena
Super page pool = 23787 92.9m 1% details with -kas
Static Tables = 91496 357.4m 5% details with -static
pfdat = 42957 167.8m 2%
vhpt = 16384 64.0m 1%
nbuf = 14736 57.6m 1% bufcache headers
text = 6724 26.3m 0% vmunix text section
data = 1534 6.0m 0% vmunix data section
Other tables = 9160 35.8m 0% details with -static
Buffer cache = 170790 667.1m 9% details with -bufcache
====== Infos sur la swap ======
Attention : penser à vérifier si le //swapmem_on// est activé ou non.
root@machine:/$ swapinfo -ta
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 6283264 0 6283264 0% 0 - 1 /dev/vg00/lvol2
dev 2097152 0 2097152 0% 0 - 1 /dev/vg00/lv_paging
reserve - 5039336 -5039336
total 8380416 5039336 3341080 60% - 0 -
====== Infos sur un segment mémoire ======
Soit le segment mémoire suivant obtenu avec la commande suivante :
machine:/# ipcs -ma|grep sybase|head -n 1
m 110136018 0xdc6412ff --rw------- sybase DBA sybase DBA 1 3309568 4452 4452 1:00:01 no-entry 1:00:01
On récupère le pid qu'on donne en paramètre à //shminfo// :
machine:/# /usr/contrib/bin/shminfo -s 110136018
libp4 (8.83): Opening /stand/vmunix /dev/kmem
Loading symbols from /stand/vmunix
Kernel TEXT pages not requested in crashconf
Will use an artificial mapping from a.out TEXT pages
shminfo (3.9)
Shmid 110136018:
struct shmid_ds at 0xe699d8
Pseudo vas at 0xf33f9980
Pseudo pregion at 0xe3d9fe80
Shared region at 0xe50cfc80
Segment at 0x92b400.0xc00000000040f000
Segment allocated out of "Global 64-bit quadrant 4"
Processes using this segment:
proc=0xe468b040 (pid 4452 "AL21_FRA_LIV_M"): vas=0x12702f0c0, SHMEM preg=0xf33c3f00
Si shminfo n'est pas installé sur le serveur, il est possible de le récupérer sur [[ftp://eh:spear9@hprc.external.hp.com/
]] (dans les toolset)
Pour plus d'information, consulter la page http://www.hp-eloquence.com/sdb/html/1144250417.html
====== Paramètres mémoire principaux ======
On trouve ces infos avec :
* //kmtune// en 11.11 (11iv1)
* //kctune// en 11.23 (11i v2)
kmtune|grep -i maxdsiz
maxdsiz 1073741824 - 1073741824
maxdsiz_64bit 4294967296 - 4294967296
shmem 1 - 1
shmmax 4294967296 Y 4294967296
shmmni 1600 - 1600
shmseg 1024 Y 1024
swapmem_on 1 - 1
maxswapchunks 10000 - 10000
Pour modifier les paramètres en 11.11 :
kmtune -u -s shmmax=12582912000
Pour modifier les paramètres en 11.23 :
kctune -h shmmax=12582912000
====== ipcs amélioré ======
//ipcs// n'indique que les heures, pas les dates. Voici une version améliorée pour HP-UX :
tusc -v ipcs -ma 2>&1 |
awk 'BEGIN { printf("%5s %9s %-20s %3s %19s %19s %19s\n","UID","SIZE","KEY","NAT","ATIME","DTIME","CTIME") }
/pstat/ { id="x" ; key="x" ; at="x" ; dt="x" ; ct="x" ; na="x" }
/psh_uid/ {id=$2 }
/psh_segsz/ {sz=$2 }
/psh_key/ { key=$2 }
/psh_nattch/ { na=$2 }
/psh_atime/ { at=$0 ; sub(".*time: ","",at) }
/psh_dtime/ { dt=$0 ; sub(".*time: ","",dt) }
/psh_ctime/ { ct=$0 ; sub(".*time: ","",ct) }
/psh_valid/ {printf("%5d %9d %-20s %3d %s %s %s\n",id,sz,key,na,at,dt,ct) | "sort" }'