On 18 Apr, 04:45, moonhkt wrote:
> Hi All
>
> About our system
> AIX 5.2
> Memory : 8GB
> pageing Space is 3GB.
>
> Why the % using paging space is not high ? less than 30% ?
>
> Topas Monitor for host: * *sh * * * * * * * * EVENTS/QUEUES * *FILE/
> TTY
> Fri Apr 18 11:44:39 2008 * Interval: *5 * * * * Cswitch * *1665
> Readch * *22.0M
> * * * * * * * * * * * * * * * * * * * * * * * * Syscall * 72941
> Writech * 20.4M
> Kernel * 22.2 * |####### * * * * * * * * * * | *Reads * * 21026
> Rawin * * * 117
> User * * 73.2 * |##################### * * * | *Writes * *42368
> Ttyout * *36440
> Wait * * *2.6 * |# * * * * * * * * * * * ** | *Forks * * * * 4
> Igets * * * * 7
> Idle * * *2.0 * |# * * * * * * * * * * * ** | *Execs * * * * 8
> Namei * * *3200
> * * * * * * * * * * * * * * * * * * * * * * * * Runqueue * *9.4
> Dirblk * * 2748
> Network *KBPS * I-Pack *O-Pack * KB-In *KB-Out *Waitqueue * 3.2
> en0 * * 147.0 * *351.2 * 336.2 * *79.8 * *67.2
> lo0 * * * 0.1 * * *1.2 * * 1.2 * * 0.1 * * 0.1 *PAGING
> MEMORY
> * * * * * * * * * * * * * * * * * * * * * * * * Faults * * 3196
> Real,MB * *7692
> Disk * *Busy% * * KBPS * * TPS KB-Read KB-Writ *Steals * * *428 *%
> Comp * * 60.9
> hdisk4 * 89.2 *21010.4 * 602.8 *1273.6 19736.8 *PgspIn * * * 19 *%
> Noncomp *40.0
> hdisk0 * 38.4 * *341.9 * *73.4 * *75.2 * 266.7 *PgspOut * * *26 *%
> Client * *1.0
> hdisk1 * 34.6 * *269.1 * *55.4 * * 3.2 * 265.9 *PageIn * * *338
> hdisk3 * *0.0 * * *0.0 * * 0.0 * * 0.0 * * 0.0 *PageOut * *4975
> PAGING SPACE
> * * * * * * * * * * * * * * * * * * * * * * * * Sios * * * 1572
> Size,MB * *3072
>
> 2008/04/16,04:00:04,Users,25,paging space,3072MB,12%
> 2008/04/16,04:30:03,Users,37,paging space,3072MB,13%
> 2008/04/16,05:00:05,Users,38,paging space,3072MB,12%
> 2008/04/16,05:30:00,Users,40,paging space,3072MB,12%
> 2008/04/16,06:00:01,Users,41,paging space,3072MB,12%
> 2008/04/16,06:30:00,Users,45,paging space,3072MB,12%
> 2008/04/16,07:00:11,Users,46,paging space,3072MB,12%
> 2008/04/16,07:30:08,Users,50,paging space,3072MB,12%
> 2008/04/16,08:00:01,Users,51,paging space,3072MB,12%
> 2008/04/16,08:30:05,Users,94,paging space,3072MB,13%
> 2008/04/16,09:00:03,Users,374,paging space,3072MB,13%
> 2008/04/16,09:30:03,Users,519,paging space,3072MB,14%
> 2008/04/16,10:00:01,Users,585,paging space,3072MB,15%
> 2008/04/16,10:30:04,Users,626,paging space,3072MB,19%
> 2008/04/16,11:00:00,Users,668,paging space,3072MB,20%
> 2008/04/16,11:30:06,Users,674,paging space,3072MB,22%
> 2008/04/16,12:00:03,Users,685,paging space,3072MB,23%
> 2008/04/16,12:30:06,Users,658,paging space,3072MB,24%
> 2008/04/16,13:00:05,Users,635,paging space,3072MB,24%
> 2008/04/16,13:30:00,Users,643,paging space,3072MB,23%
> 2008/04/16,14:00:04,Users,664,paging space,3072MB,24%
> 2008/04/16,14:30:11,Users,667,paging space,3072MB,24%
> 2008/04/16,15:00:01,Users,679,paging space,3072MB,24%
> 2008/04/16,15:30:05,Users,686,paging space,3072MB,25%
> 2008/04/16,16:00:07,Users,684,paging space,3072MB,26%
> 2008/04/16,16:30:04,Users,675,paging space,3072MB,26%
> 2008/04/16,17:00:08,Users,685,paging space,3072MB,27%
> 2008/04/16,17:30:01,Users,586,paging space,3072MB,25%
> 2008/04/16,18:00:00,Users,371,paging space,3072MB,22%
> 2008/04/16,18:30:04,Users,333,paging space,3072MB,22%
> 2008/04/16,19:00:01,Users,293,paging space,3072MB,20%
> 2008/04/16,19:30:01,Users,271,paging space,3072MB,20%
> 2008/04/16,20:00:00,Users,239,paging space,3072MB,19%
> 2008/04/16,20:30:01,Users,205,paging space,3072MB,19%
> 2008/04/16,21:00:03,Users,172,paging space,3072MB,19%
> 2008/04/16,21:30:02,Users,165,paging space,3072MB,19%
> 2008/04/16,22:00:00,Users,151,paging space,3072MB,19%
> 2008/04/16,22:30:01,Users,139,paging space,3072MB,18%
> 2008/04/16,23:00:01,Users,135,paging space,3072MB,17%
> 2008/04/16,23:30:00,Users,130,paging space,3072MB,17%

Because it doesnt need to use anymore than that.

Scott

On 4$B7n(B18$BF|(B, $B2<8a(B11$B;~(B21$BJ,(B, scott wrote:
> On 18 Apr, 04:45, moonhkt wrote:
>
>
>
>
>
> > Hi All
>
> > About our system
> > AIX 5.2
> > Memory : 8GB
> > pageing Space is 3GB.
>
> > Why the % using paging space is not high ? less than 30% ?
>
> > Topas Monitor for host: sh EVENTS/QUEUES FILE/
> > TTY
> > Fri Apr 18 11:44:39 2008 Interval: 5 Cswitch 1665
> > Readch 22.0M
> > Syscall 72941
> > Writech 20.4M
> > Kernel 22.2 |####### | Reads 21026
> > Rawin 117
> > User 73.2 |##################### | Writes 42368
> > Ttyout 36440
> > Wait 2.6 |# | Forks 4
> > Igets 7
> > Idle 2.0 |# | Execs 8
> > Namei 3200
> > Runqueue 9.4
> > Dirblk 2748
> > Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 3.2
> > en0 147.0 351.2 336.2 79.8 67.2
> > lo0 0.1 1.2 1.2 0.1 0.1 PAGING
> > MEMORY
> > Faults 3196
> > Real,MB 7692
> > Disk Busy% KBPS TPS KB-Read KB-Writ Steals 428 %
> > Comp 60.9
> > hdisk4 89.2 21010.4 602.8 1273.6 19736.8 PgspIn 19 %
> > Noncomp 40.0
> > hdisk0 38.4 341.9 73.4 75.2 266.7 PgspOut 26 %
> > Client 1.0
> > hdisk1 34.6 269.1 55.4 3.2 265.9 PageIn 338
> > hdisk3 0.0 0.0 0.0 0.0 0.0 PageOut 4975
> > PAGING SPACE
> > Sios 1572
> > Size,MB 3072
>
> > 2008/04/16,04:00:04,Users,25,paging space,3072MB,12%
> > 2008/04/16,04:30:03,Users,37,paging space,3072MB,13%
> > 2008/04/16,05:00:05,Users,38,paging space,3072MB,12%
> > 2008/04/16,05:30:00,Users,40,paging space,3072MB,12%
> > 2008/04/16,06:00:01,Users,41,paging space,3072MB,12%
> > 2008/04/16,06:30:00,Users,45,paging space,3072MB,12%
> > 2008/04/16,07:00:11,Users,46,paging space,3072MB,12%
> > 2008/04/16,07:30:08,Users,50,paging space,3072MB,12%
> > 2008/04/16,08:00:01,Users,51,paging space,3072MB,12%
> > 2008/04/16,08:30:05,Users,94,paging space,3072MB,13%
> > 2008/04/16,09:00:03,Users,374,paging space,3072MB,13%
> > 2008/04/16,09:30:03,Users,519,paging space,3072MB,14%
> > 2008/04/16,10:00:01,Users,585,paging space,3072MB,15%
> > 2008/04/16,10:30:04,Users,626,paging space,3072MB,19%
> > 2008/04/16,11:00:00,Users,668,paging space,3072MB,20%
> > 2008/04/16,11:30:06,Users,674,paging space,3072MB,22%
> > 2008/04/16,12:00:03,Users,685,paging space,3072MB,23%
> > 2008/04/16,12:30:06,Users,658,paging space,3072MB,24%
> > 2008/04/16,13:00:05,Users,635,paging space,3072MB,24%
> > 2008/04/16,13:30:00,Users,643,paging space,3072MB,23%
> > 2008/04/16,14:00:04,Users,664,paging space,3072MB,24%
> > 2008/04/16,14:30:11,Users,667,paging space,3072MB,24%
> > 2008/04/16,15:00:01,Users,679,paging space,3072MB,24%
> > 2008/04/16,15:30:05,Users,686,paging space,3072MB,25%
> > 2008/04/16,16:00:07,Users,684,paging space,3072MB,26%
> > 2008/04/16,16:30:04,Users,675,paging space,3072MB,26%
> > 2008/04/16,17:00:08,Users,685,paging space,3072MB,27%
> > 2008/04/16,17:30:01,Users,586,paging space,3072MB,25%
> > 2008/04/16,18:00:00,Users,371,paging space,3072MB,22%
> > 2008/04/16,18:30:04,Users,333,paging space,3072MB,22%
> > 2008/04/16,19:00:01,Users,293,paging space,3072MB,20%
> > 2008/04/16,19:30:01,Users,271,paging space,3072MB,20%
> > 2008/04/16,20:00:00,Users,239,paging space,3072MB,19%
> > 2008/04/16,20:30:01,Users,205,paging space,3072MB,19%
> > 2008/04/16,21:00:03,Users,172,paging space,3072MB,19%
> > 2008/04/16,21:30:02,Users,165,paging space,3072MB,19%
> > 2008/04/16,22:00:00,Users,151,paging space,3072MB,19%
> > 2008/04/16,22:30:01,Users,139,paging space,3072MB,18%
> > 2008/04/16,23:00:01,Users,135,paging space,3072MB,17%
> > 2008/04/16,23:30:00,Users,130,paging space,3072MB,17%
>
> Because it doesnt need to use anymore than that.
>
> Scott- $Bp,i6Ho0zMQJ8;z(B -
>
> - $Bp}<(Ho0zMQJ8;z(B -

Below is our memory report vmstat -s, Does our system busy with
Paging ?

Date/Time Page in Page Out PS in PS Out
Pend IO Wai Syscalls
=================== =========== =========== =========== ===========
=========== ===========
2008/04/22_09:30:17 455015189 417426508 10894769 17093920
127142456 23068015651
2008/04/22_09:30:37 455020096 417428905 10895032 17094296
127146242 23068685432
2008/04/22_09:30:57 455025229 417434944 10895710 17095716
127150163 23069252129
2008/04/22_09:31:18 455028098 417436317 10896194 17095796
127152379 23069710204
2008/04/22_09:31:38 455029322 417437670 10896391 17096092
127153160 23070002793
2008/04/22_09:31:58 455029892 417438638 10896413 17096118
127153646 23070456537
2008/04/22_09:32:18 455031888 417439911 10896723 17096511
127155390 23070912139
2008/04/22_09:32:38 455035133 417443273 10896969 17096852
127158104 23071286256
2008/04/22_09:32:58 455040914 417445680 10897284 17097343
127162521 23071706581
2008/04/22_09:33:18 455049376 417448322 10897983 17098258
127168668 23072260210
2008/04/22_09:33:39 455057913 417450769 10898270 17098705
127171661 23072635782

Reported by
vmstat -s |\
awk -v VTIME=`date "+%Y/%m/%d_%H:%M:%S"` '
{
SP = substr($0,23,50)
VAL = substr($0,0,22)
if (SP == "page ins") {
PAGEINS=substr($0,11,11)
}
else if (SP == "page outs") {
PAGEOUT=substr($0,11,11)
}
else if (SP == "paging space page ins") {
PSIN=substr($0,11,11)
}
else if (SP == "paging space page outs") {
PSOUT=substr($0,11,11)
}
else if (SP == "pending I/O waits" ) {
PENDIO=substr($0,11,11)
}
else if (SP == "syscalls") {
SYSCALL=substr($0,11,11)
}
}
END {