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To assist with specifying the LSR pool definitions that provide the best performance for your system, use the SHOW LSR command. This command displays statistics about the LSR pool. From this display you can note trends and alter the LSR pool definition appropriately.
Example
The following panel displays LSR pool statistics from a system that has been customized, and as a result has significantly more buffers than the distributed definition.
(23.01)---------------- Operator Console Services (OCS) ---------------------- SHOW LSR N15A30 ACTIVE LSR POOL 0 STATISTICS N15A31 KEYLEN: 255 STRNO: 220 FIXIOB: NO FIXBFR: NO STRMAX: 7 ACTIVE: 19 N15A32 SIZE COUNT P. READS BUF FOUND UIW NUIW %FOUND HS-COUNT N15A33 2048 100 80758 1249419 169112 0 93.92 N15A33 4096 200 197 951843 6061 0 99.97 N15A33 8192 30 7346 393443 1884 0 98.16 N15A33 10240 20 0 0 0 0 0.00 N15A33 16384 20 0 0 0 0 0.00 N15A33 28672 6 22 27066 338 6 99.91 N15A30 ACTIVE LSR POOL 1 STATISTICS N15A31 KEYLEN: 255 STRNO: 250 FIXIOB: NO FIXBFR: NO STRMAX: 1 ACTIVE: 1 N15A32 SIZE COUNT P. READS BUF FOUND UIW NUIW %FOUND HS-COUNT N15A34 DATA... N15A33 8192 500 413 42172 513 0 99.03 50 N15A35 INDEX... N15A33 2048 100 11 85045 1 0 99.98 N15A30 ACTIVE LSR POOL 11 STATISTICS N15A31 KEYLEN: 255 STRNO: 12 FIXIOB: NO FIXBFR: NO STRMAX: 1 ACTIVE: 1 N15A32 SIZE COUNT P. READS BUF FOUND UIW NUIW %FOUND HS-COUNT N15A33 2048 40 6 15688 40 0 99.96 ==> SHOW LSR
In this example, little use is being made of the 512-byte buffers. The sum of pool reads plus the number of buffers found is a small number. This small number is a sign that there are too many buffers in the pool. Deleting the pool might also be an option but could also be quite wasteful of storage as buffers from the next larger pool will then be used.
There is a low percentage of 12-KB and 16-KB pools found. This is an indication that the number of buffers could be increased for those pool sizes.
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