Excessive page faults ?

From: Jim Smart <jim_at_tsw.com.au>
Date: Fri, 07 Jan 2000 15:25:34 +1000

Fellow Admins,

As you can see from the sample data below, we are seeing excessivly page
faults.

The system is an AS4100 running ver 4.0D pl 5 , 2 x Ev5_at_466MHz with 2Gb RAM.

The database running is Universe.

Is there some way I can test the memory while the system is fully
operational ?

Is there some way I can ask the system why it is getting so many page faults
?

What other options are there ?

Thank you in advance

Regards,

Jim Smart
Systems and Network Administrator
http://www.tsw.com.au


Sample data:

#date ; uptime ; vmstat 1 10 ; iostat re0 re1 re2 re3 re4 re5 re6 1 10 ;
uptime ;date
Fri Jan 7 14:42:58 EST 2000
14:42 up 123 days, 19:04, 536 users, load average: 9.65, 9.40, 9.39
Virtual Memory Statistics: (pagesize = 8192)
  procs memory pages intr cpu

  r w u act free wire fault cow zero react pin pout in sy cs us sy
id
 151449 28 211K 1689 41K 838905M 1042M 3495M 5M 1006M 102K 322 27K 1K
20 53 28
 121451 28 211K 1457 41K 299K 294 4127 99 247 0 1K 51K 5K 25 75
0
  91455 28 211K 1233 41K 619K 365 2723 256 342 0 816 51K 3K 26 74
0
  81457 28 211K 1795 41K 303K 175 1753 65 159 0 946 51K 3K 20 80
0
 141453 28 210K 2732 41K 297K 299 1803 24 286 0 1K 41K 4K 23 77
0
 111454 33 210K 2318 41K 500K 283 2323 24 245 0 1K 26K 3K 21 79
0
 111456 31 211K 1717 41K 230K 386 4946 16 393 0 2K 93K 7K 22 78
0
  91455 28 210K 2489 41K 480K 682 2344 64 750 0 1K 55K 4K 28 72
0
 121451 31 211K 1577 41K 447K 292 1716 24 255 0 3K 72K 9K 19 81
0
 121458 28 211K 1481 41K 597K 515 4689 64 470 0 1K 54K 4K 25 75
0
      tty re0 re1 re2 re3 re4 re5 re6
cpu
 tin tout bps tps bps tps bps tps bps tps bps tps bps tps bps tps us
ni sy id
 395 376 133 6 238 14 169 14 165 13 189 16 190 15 138 10 20
0 53 28
 20912844 72 2 80 3 112 14 64 6 80 10 56 7 24 3 31
0 69 0
 451 7239 79 3 16 2 40 5 32 4 0 0 16 2 8 1 15
0 85 0
 57813537 16 2 96 5 0 0 32 4 8 1 0 0 72 9 21
0 79 0
 212 9510 128 2 88 6 48 6 8 1 80 10 0 0 8 1 35
0 65 0
 219 6624 271 18 159 6 80 5 72 9 24 3 32 4 0 0 41
0 59 0
 444 5637 96 5 168 7 40 5 56 7 471 15 176 8 56 2 19
0 81 0
 295 9813 64 8 128 9 72 9 96 8 32 4 32 4 48 6 24
0 76 0
 44512712 0 0 231 15 80 10 56 7 72 9 175 11 32 4 25
0 75 0
 441 6594 48 6 32 4 8 1 32 4 48 6 24 3 16 2 18
0 82 0
14:43 up 123 days, 19:05, 535 users, load average: 9.73, 9.79, 9.62
Fri Jan 7 14:43:36 EST 2000
#
Received on Fri Jan 07 2000 - 05:25:15 NZDT

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