high paging

From: Holger.VanKoll@SWISSCOM.COM
Date: Thu Nov 14 2002 - 04:16:20 EST


Hello,

why do I have so much paging on this box (3GB is used)

 4 27 1146219 571 0 139 156 1657 2394 0 1969 9578 4332 20 7 0 73
 4 18 1147233 613 0 162 111 3728 7464 0 2879 17201 8539 39 13 1 47
 3 22 1147683 607 0 175 143 3149 10136 0 2513 20013 6676 37 12 1 51
 2 21 1148753 592 0 136 143 3000 5212 0 2941 10902 8507 27 12 2 59

I have 71% memory used as filecache. So lrud should steal pages there, shouldn´t it?

I know that I have an io bottleneck; but much of this io goes to paging.

(0)root@sbe2622 359# /usr/samples/kernel/vmtune
vmtune: current values:
  -p -P -r -R -f -F -N -W
minperm maxperm minpgahead maxpgahead minfree maxfree pd_npages maxrandwrt
 314565 1258260 4 16 600 616 524288 0

  -M -w -k -c -b -B -u -l -d
maxpin npswarn npskill numclust numfsbufs hd_pbuf_cnt lvm_bufcnt lrubucket defps
1258260 65536 16384 1 93 977 9 131072 1

        -s -n -S -L -g -h
sync_release_ilock nokilluid v_pinshm lgpg_regions lgpg_size strict_maxperm
        0 0 0 0 0 0

 -t
maxclient
1257440

number of valid memory pages = 1572825 maxperm=80.0% of real memory
maximum pinable=80.0% of real memory minperm=20.0% of real memory
number of file memory pages = 1164847 numperm=74.1% of real memory

number of compressed memory pages = 0 compressed=0.0% of real memory
number of client memory pages = 38 numclient=0.0% of real memory
# of remote pgs sched-pageout = 0 maxclient=79.9% of real memory

I know the pgahead/minmaxfree parameters are not default, but I see no change when setting them to default.

Regards,

Holger



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