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AIX
AIX performance issue
Post 302461281 by zxmaus on Saturday 9th of October 2010 08:24:26 PM
10-09-2010
Moderator
4.2 GHz is p6, not p5 ... 
Apart from that - A notable difference from POWER6 is that the POWER7 executes instructions out-of-order instead of in-order like p5 and predecessors did - and p7 has 12 instruction units per core instead of 8 and a lot more cache. There are certain workloads - particularly single threaded ones that do a particular task, that are significantly slower on p7 - we have in our lab tested the p7 in any possible circumstance before we have decided to go with them - for normal multithreaded webserver and DB workloads they are significantly better in throughput, for stupid single threaded tasks like backups with compression, they take significantly longer - and the differences are bigger when you run 5.3 than when you run 6.1 on p7.
Apart from that - A notable difference from POWER6 is that the POWER7 executes instructions out-of-order instead of in-order like p5 and predecessors did - and p7 has 12 instruction units per core instead of 8 and a lot more cache. There are certain workloads - particularly single threaded ones that do a particular task, that are significantly slower on p7 - we have in our lab tested the p7 in any possible circumstance before we have decided to go with them - for normal multithreaded webserver and DB workloads they are significantly better in throughput, for stupid single threaded tasks like backups with compression, they take significantly longer - and the differences are bigger when you run 5.3 than when you run 6.1 on p7.
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LEARN ABOUT OSF1
x11perfcomp
x11perfcomp(1X) x11perfcomp(1X) NAME
x11perfcomp - X11 server performance comparison program SYNOPSIS
x11perfcomp [-r | -ro] [-l label_file] files OPTIONS
x11perfcomp accepts the options listed below: Specifies that the output should also include relative server performance. Specifies that the output should include only relative server performance. Specifies a label file to use. DESCRIPTION
The x11perfcomp program merges the output of several x11perf(1X) runs into a nice tabular format. It takes the results in each file, fills in any missing test results if necessary, and for each test shows the objects/second rate of each server. If invoked with the -r or -ro options, it shows the relative performance of each server to the first server. Normally, x11perfcomp uses the first file specified to determine which specific tests it should report on. Some (non-DEC :) servers may fail to perform all tests. In this case, x11perfcomp automatically substitutes in a rate of 0.0 objects/second. Since the first file determines which tests to report on, this file must contain a superset of the tests reported in the other files, else x11perfcomp will fail. You can provide an explicit list of tests to report on by using the -l switch to specify a file of labels. You can create a label file by using the -label option in x11perf. X DEFAULTS
There are no X defaults used by this program. SEE ALSO
X(1X), x11perf(1X) AUTHORS
Mark Moraes wrote the original scripts to compare servers. Joel McCormack just munged them together a bit. x11perfcomp(1X)