If the OS can use hyperthreading, fortunately, benchmarks are showing that there's no preformance hits because of overhead created trying to keep resource contention down. This is good! So if your system _can_ support hyperthreading, leaving it on won't hurt, if it doesn't improve your system's performance. If the OS doesn't support hyperthreading, then it just won't use it, obviously, so it's not an issue.
But as far as MySQL's usage and performance in particular with hyperthreading procs, I don't have any experience :/ Mike -----Original Message----- From: John Dell [mailto:[EMAIL PROTECTED]] Sent: Wednesday, December 11, 2002 6:15 PM To: [EMAIL PROTECTED] Subject: MySQL4 on Linux with Intel Hyperthreading CPUs? Hi, I have a new dedicated mysql 4.0.5 server running redhat 8.0 that we are testing. The new server is a dual Intel Xeon 2.4GHZ with hyperthreading enabled, so Linux thinks there are 4 cpu's rather than the 2 real CPU's. Anybody have any experience with this and whether it can cause any problems with MySQL or Linux? Any performance reasons to enable/disable hyperthreading? Thanks! John Dell [EMAIL PROTECTED] --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
