Originally posted by: anu1203

Hi

In one of our AIX system paging space is high
Total Paging Space Percent Used
22368MB 33%
Page Space Physical Volume Volume Group Size %Used Active Auto Type
paging00 hdisk4 swap1vg 20320MB 26 yes yes lv
hd6 hdisk0 rootvg 2048MB 100 yes yes lv

Please suggest

Originally posted by: tony.evans

What was it last week?
The week before?
Average of the month before that?
The last year?

Your paging volumes are unbalanced in size, this is usually considered not good practice.

How much real memory do you have.
What memory tuning do you have.
Which memory tuning guides have you read.
What application are you running.
What version of AIX is it.
And a thousand other questions.

I suggest, you help yourself before asking.

Originally posted by: anu1203

Hi

we have real memory
realmem 33554432 Amount of usable physical memory in Kbytes False

Paging space is changing from 30-50%

cpu_scale_memp = 8
data_stagger_interval = 161
defps = 1
force_relalias_lite = 0
framesets = 2
htabscale = n/a
kernel_heap_psize = 4096
kernel_psize = 16777216
large_page_heap_size = 0
lgpg_regions = 0
lgpg_size = 0
low_ps_handling = 1
lru_file_repage = 1
lru_poll_interval = 10
lrubucket = 131072
maxclient% = 80
maxfree = 1088
maxperm = 6425932
maxperm% = 80
maxpin = 6767140
maxpin% = 80
mbuf_heap_psize = 65536
memory_affinity = 1
memory_frames = 8388608
memplace_data = 2
memplace_mapped_file = 2
memplace_shm_anonymous = 2
memplace_shm_named = 2
memplace_stack = 2
memplace_text = 2
memplace_unmapped_file = 2
mempools = 1
minfree = 960
minperm = 1606483
minperm% = 20
nokilluid = 0
npskill = 44736
npsrpgmax = 357888
npsrpgmin = 268416
npsscrubmax = 357888
npsscrubmin = 268416
npswarn = 178944
num_spec_dataseg = 0
numpsblks = 5726208
page_steal_method = 0
pagecoloring = n/a
pinnable_frames = 6480100
psm_timeout_interval = 20000
pta_balance_threshold = n/a
relalias_percentage = 0
rpgclean = 0
rpgcontrol = 2
scrub = 0
scrubclean = 0
soft_min_lgpgs_vmpool = 0
spec_dataseg_int = 512
strict_maxclient = 1
strict_maxperm = 0
v_pinshm = 0
vm_modlist_threshold = -1
vmm_fork_policy = 1
vmm_mpsize_support = 1
wlm_memlimit_nonpg = 1

Originally posted by: Sireesha_dadi

Hi,

The size of hd6 and paging00 should be equal.

Depending upon application on that server the size of paging space can be between half (for the brave) and six times memory (for the rich)

For systems where there are no AIX users and well behaved applications (i.e. they have maximum number of sessions and processes) - start with half the memory size
•for systems where users log on to UNIX or can create lots of processes - start with two times memory.