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Title: wait process in new p52A (4-way) AIX 5.2ML08 Post by: David on February 16, 2007, 07:52:45 AM Dear AIXer,
I have one new p52A 4-way/16GB RAM with AIX5.2ML08. I did comparison with other p52A run a few command, I found this new p52A a bid different. for all our p52A, when you run ps aux command, the wait process is as much as the number of processors. But this new system has 64 wait process. Is it normal....can anybody expalin me on this ? # oslevel -r 5200-08 # oslevel -s 5200-08-02 #ps aux USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 12294 25.0 0.0 48 48 - A 18:06:30 19:53 wait root 20490 25.0 0.0 48 48 - A 18:06:30 19:52 wait root 16392 25.0 0.0 48 48 - A 18:06:30 19:51 wait root 8196 24.8 0.0 48 48 - A 18:06:30 19:45 wait root 0 0.0 0.0 64 64 - A 18:06:30 0:01 swapper root 278664 0.0 0.0 56 56 - A 18:06:30 0:00 xmfreed root 282762 0.0 0.0 56 56 - A 18:06:30 0:00 vmptacrt root 286860 0.0 0.0 68 68 - A 18:06:30 0:00 pilegc root 266370 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 270468 0.0 0.0 56 56 - A 18:06:30 0:00 reaper root 274566 0.0 0.0 68 68 - A 18:06:30 0:00 lrud root 303252 0.0 0.0 68 68 - A 18:06:30 0:00 wlmsched root 327848 0.0 0.0 172 176 - A 18:07:20 0:00 /usr/ccs/bin/sh root 331944 0.0 0.0 56 56 - A 18:06:54 0:00 lvmbb root 290958 0.0 0.0 56 56 - A 18:06:30 0:00 xmgc root 295056 0.0 0.0 56 56 - A 18:06:30 0:00 netm root 299154 0.0 0.0 112 112 - A 18:06:30 0:00 gil root 229488 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 233586 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 237684 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 217194 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 221292 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 225390 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 254076 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 258174 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 262272 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 241782 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 245880 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 249978 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 1122358 0.0 0.0 1348 1284 - A 18:07:44 0:00 /usr/sbin/rsct/ root 1126452 0.0 0.0 560 580 lft0 A 18:07:38 0:00 /usr/sbin/getty root 1138768 0.0 0.0 2068 2012 - A 18:07:41 0:00 /usr/sbin/rsct/ root 1101874 0.0 0.0 1752 1780 - A 18:07:45 0:00 /usr/sbin/rsct/ root 1110070 0.0 0.0 772 808 pts/0 A 18:13:34 0:00 -ksh root 1118260 0.0 0.0 572 592 0 A 18:07:34 0:00 /usr/sbin/getty root 1171528 0.0 0.0 436 448 - A 18:07:34 0:00 /usr/sbin/cron root 1179800 0.0 0.0 440 448 pts/0 A 18:26:23 0:00 ps aux root 1187936 0.0 0.0 524 540 - A 18:07:27 0:00 /usr/sbin/srcms root 1142866 0.0 0.0 2204 2192 - A 18:07:45 0:00 /usr/sbin/rsct/ root 1163332 0.0 0.0 468 480 - A 18:07:30 0:00 /usr/sbin/syslo root 1167432 0.0 0.0 56 56 - A 18:07:27 0:00 random root 356370 0.0 0.0 452 476 - A 18:07:34 0:00 /usr/sbin/inetd root 360626 0.0 0.0 104 104 - A 18:07:15 0:00 dog root 364730 0.0 0.0 60 60 - A 18:07:13 0:00 usbCfgDev root 340182 0.0 0.0 632 640 - A 18:07:19 0:00 /usr/sbin/syncd root 344242 0.0 0.0 56 56 - A 18:07:00 0:00 jfsz root 348398 0.0 0.0 752 784 - A 18:07:20 0:00 /usr/lib/errdem root 1060900 0.0 0.0 348 364 pts/0 A 18:26:23 0:00 more root 1081372 0.0 0.0 1448 1116 - A 18:07:38 0:00 /usr/local/open root 1085490 0.0 0.0 736 756 - A 18:13:34 0:00 telnetd -a root 377080 0.0 0.0 56 56 - A 18:07:22 0:00 rtcmd root 385222 0.0 0.0 68 68 - A 18:07:22 0:00 kbiod root 1056776 0.0 0.0 2936 2424 - A 18:07:43 0:00 /usr/sbin/rsct/ root 81960 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 86058 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 90156 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 69666 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 73764 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 77862 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 106548 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 110646 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 114744 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 94254 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 98352 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 102450 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 32784 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 36882 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 40980 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 1 0.0 0.0 844 856 - A 18:07:03 0:00 /etc/init root 24588 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 28686 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 57372 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 61470 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 65568 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 45078 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 49176 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 53274 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 180312 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 184410 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 188508 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 168018 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 172116 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 176214 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 204900 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 208998 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 213096 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 192606 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 196704 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 200802 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 131136 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 135234 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 139332 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 118842 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 122940 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 127038 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 155724 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 159822 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 163920 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 143430 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 147528 0.0 0.0 48 48 - A 18:06:30 0:00 wait root 151626 0.0 0.0 48 48 - A 18:06:30 0:00 wait Rgds, David Title: Re: wait process in new p52A (4-way) AIX 5.2ML08 Post by: ravicisco2002 on April 08, 2007, 08:17:16 AM : The wait process runs when there are no processes available for execution, or when the CPU is waiting for I/Os to disk. If there are no I/Os pending to a local disk, all time charged to the wait process is classified as idle time.
On a uniprocessor system, the process ID for the single wait process is 516. On a SMP system, one wait process exists for each processor. If the ps report shows a high aggregate time for this process, it simply means there were significant periods of time when no other process was ready to run on the CPU, or the system was spending time waiting for pending disk I/Os. Title: Re: wait process in new p52A (4-way) AIX 5.2ML08 Post by: David on April 08, 2007, 10:54:23 AM :)
Hi Ravi...thanks a lot for your reply. David |