András, > We've done some test runs with the 'old' kernel (linux-image-4.9.0-4- > amd64) and the 'new' one (linux-image-4.9.0-5-amd64). > > No. of tests: 6014 > No. of result checks: 253555 (checking column values, stored procedure > results, etc.) > > Average running time on 4.9.0-4: 466 secs (7 mins 46 secs) > Average running time on 4.9.0-5: 635 secs (10 mins 35 secs)
While you results are interesting, and certainly "not good", they are not necessarily a reflection of global reality due to the age of your kernel. The performance impact of the recent fixes hinge, mainly, on whether the host OS/kernel has PCID support. PCID support was only added to linux kernel 4.14, released November 2017. It would be interesting for you to rerun the tests using the latest kernel. Sean ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
