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We are seeing much higher CPU usage on JVM 1.6 than on JVM 1.5 when running the "DOTS ATCJ2" test on a large Derby / Java DB database. The test has previously been run with jvm1.5.0_06-b05 on Solaris 10 1/06 s10x_u1wos_19a X86 - SunOS 5.10 Generic_118844-26. Increased CPU usage is seen with jvm1.6.0-rc-b97 and b98. The size of the database is ~342GB (du -h: 342G TESTDB/seg0). (# tuples in ATCJ2 tables: BID: 3.4 mill., ITEM: 600 mill., REGISTRY: 417 mill.) -------- * DOTS: see http://ltp.sourceforge.net/dotshowto.php , http://db.apache.org/derby/integrate/DOTS_Derby.htm , http://db.apache.org/derby/binaries/UsingDotsDerbySystemTest.pdf . We have adapted DOTS to also run on other OS's than Linux.
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