Kathey Marsden <[EMAIL PROTECTED]> wrote: > Right now we fly without a net for performance. Does anyone run any > regular performance regression tests, especially ones for which they > might be able to post results?
The results from the performance regression test I run are now available on the following Web page: http://home.online.no/~olmsan/derby/perf/ This regression test runs "nightly" (Norwegian time) on the Derby trunk. Currently only the following loads are included: * Single record operations: select, insert, update and delete of a single record * "TPC-B like load" I hope to be able to including some join tests soon. I am also working on trying to reduce some of "noise" from the test results (the variance in the results are too large). The most positive change in the performance has been on Select operation in client-server mode. Compared to the performance of the 10.1.1.0 release, Derby now performs almost 20 percent better on this particular load (a CPU reduction per transaction of about 25 percent). This is mostly due to the performance improvements done by Dyre, Knut Anders and Dan (and possibly others). Please note that if you look at some of the runs from several months ago there are data that indicates that there has been some large performance regressions. These are mostly due to changes in either the test clients or the test configurations (and should have been deleted from the graphs). Feel free to post any comments you have or proposals for improvements. ..olav
