Performance tuning for AIX 4.3.x

September 2003

Below is vmtune settings that IBM have provided to improve performance for AIX 4.3.x systems. Please note that this is not necessary for AIX 4.3.3 as these are set correctly by default :

-p minperm 6347	-P maxperm 27388	-r minpgahead 2	-R maxpgahead 8
-f minfree 120	-F maxfree 128	-n pd_npages 524288	-W maxrandwrt 0
-M maxpin 26208	-w npswarn 2048	-k npskill 512	-c numclust 1002
-b numfsbufs 93	-B hd_pbuf_cnt 80	-u lvm_bufcnt 9	-l lrubucket 131072
-d defps 1	-s sync_release_ilock 0	-n nokillroot 0	-S v_pinshm 0
-h strict_maxperm 0
number of valid memory pages = 32760 maximum pinable€.0% of real memory number of file memory pages = 7333		maxpermw.5% of real memory minperm_.4% of real memory numperm".4% of real memory

 

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