Sean, finally we choose the easiest way, backup the system and update it to Debian SID.
# uname -a Linux firebirdtest 4.14.0-3-amd64 #1 SMP Debian 4.14.12-2 (2018-01-06) x86_64 GNU/Linux Average running time: 641 secs (10 mins 41 secs) András -----Original Message----- From: Leyne, Sean [mailto:s...@broadviewsoftware.com] Sent: Tuesday, January 9, 2018 4:35 PM To: For discussion among Firebird Developers <firebird-devel@lists.sourceforge.net> Subject: Re: [Firebird-devel] Meltdown and Spectre 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 __________ Information from ESET Mail Security, version of virus signature database 16707 (20180109) __________ The message was checked by ESET Mail Security. http://www.eset.com __________ Information from ESET Mail Security, version of virus signature database 16713 (20180110) __________ The message was checked by ESET Mail Security. http://www.eset.com ------------------------------------------------------------------------------ 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
