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DS8800 Performance Monitoring and Tuning
book

DS8800 Performance Monitoring and Tuning

by Gero Schmidt, Bertrand Dufrasne, Jana Jamsek, Peter Kimmel, Hiroaki Matsuno, Flavio Morais, Lindsay Oxenham, Antonio Rainero, Denis Senin
July 2012
Intermediate to advanced content levelIntermediate to advanced
726 pages
26h 28m
English
IBM Redbooks
Content preview from DS8800 Performance Monitoring and Tuning
Chapter 9. Performance considerations for UNIX servers 369
seek dist (blks): init 14251264,
avg 1928.4 min 256 max 511232 sdev 23445.5
seek dist (%tot blks):init 10.61802,
avg 0.00144 min 0.00019 max 0.38090 sdev 0.01747
time to next req(msec): avg 50.666 min 1.843 max 14010.230 sdev 393.436
throughput: 2513.5 KB/sec
utilization: 0.99
VOLUME: /dev/hdisk55 description: IBM FC 2107
writes: 2752 (0 errs)
write sizes (blks): avg 256.0 min 256 max 256 sdev 0.0
write times (msec): avg 1.473 min 0.507 max 1.753 sdev 0.227
write sequences: 2575
write seq. lengths: avg 273.6 min 256 max 512 sdev 64.8
seeks: 2575 (93.6%)
seek dist (blks): init 14252544, ...
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Publisher Resources

ISBN: 0738436836Purchase book