Low Virtual memory available Post: 302600669

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Operating Systems AIX Low Virtual memory available Post 302600669 by zxmaus on Tuesday 21st of February 2012 10:20:05 PM

02-21-2012

Moderator

can you post vmstat -v

I guess your system is paging a lot (or scanning and freeing pages in significant amount).
Your minperm value is set to 20% which is approx 26000 pages - you might want to reduce this to give the box some air to breathe.

For AIX 5.2 with ML greater 4, IBM used to recommend usually below tunables

Code:

vmo -p -o minperm%=5
Leave maxperm and maxclient at default of 80
Leave strict_maxperm and strict_maxclient at their defaults
vmo -p -o minfree=960
vmo -p -o maxfree=1088
vmo -p -o lru_file_repage=0
vmo -p -o lru_poll_interval=10
ioo -p -o j2_maxPageReadAhead=128
ioo -p -o maxpgahead=16
ioo -p -o j2_maxRandomWrite=32
ioo -p -o maxrandwrt=32
ioo -p -o j2_nBufferPerPagerDevice=1024
ioo -p -o hd_pbuf_cnt=1024
ioo -p -o numfsbufs=1024

Regards
zxmaus

zxmaus

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LEARN ABOUT PLAN9

vdltodmx

vdltodmx(1)						      General Commands Manual						       vdltodmx(1)

NAME

       vdltodmx - dmx configuration file parser and printer

SYNOPSIS

       vdltodmx infile outfile

DESCRIPTION

       vdltodmx  reads	the  input file, which should be in VDL configuration file format.  After a successful parse, a file in Xdmx configuration
       file format is written to the output file.

       The VDL file format is used with xmovie, which is available from http://www.llnl.gov/icc/lc/img/xmovie/xmovie.html

EXAMPLE

       Given the following VDL-format file:
	      0
	      2
	      #
	      #
	      2560 2048 Left two-thirds [restrict=*:2]
	      2
	      :2.1 1280 2048   0    0 0 0
	      :2.2 1280 2048   1280 0 0 0
	      4
	      1280 1024 0      0
	      1280 1024 0      1024
	      1280 1024 1280   0
	      1280 1024 1280   1024
	      #
	      2560 2048 Right two-thirds [restrict=*:2]
	      2
	      :2.2 1280 2048   0   0 0 0
	      :2.3 1280 2048   1280 0 0 0
	      4
	      1280 1024 1280	0
	      1280 1024 1280	1024
	      1280 1024 2560 0
	      1280 1024 2560 1024
       the following DMX-format file will be produced:
	      #
	      #
	      virtual "Left two-thirds" 2560x2048 {
		  display :2.1 1280x2048;
		  display :2.2 1280x2048 @1280x0;
	      }
	      #
	      virtual "Right two-thirds" 2560x2048 {
		  display :2.2 1280x2048;
		  display :2.3 1280x2048 @1280x0;
	      }

BUGS

       If the VDL file is not in the expected format, the program will probably dump core.

SEE ALSO

       Xdmx(1), xdmxconfig(1), vdl(3), xmovie(1)

X Version 11							xorg-server 1.12.4						       vdltodmx(1)