Forenote: I have no wish to start an OS debate. Hello,
I'm in the fortunate position of having a dual 2.8GHz Xeon with 4G of ram and 4 10k SCSI disks (configured in RAID-10) to deploy as a new MySQL server. Since I'm a numbers freak, I've been running super-smack on it for the last few days to see how it stacks up. Tweaking various configs and kernel options, on any OS, obviously wins a few hundred/thousand queries per second, but I'm really quite surprised at one major difference. Optimisations and tweaking aside, FreeBSD 5.2.1-p6 on this hardware did well to achieve 17,000 queries per second, using super-smack's select-key.smack with the query cache turned on. Nothing I could do, and I spent days trying, got it much higher. Once I wiped this and tried Linux (both gentoo, with their patched-to-the-hilt 2.6.5 kernel, and Debian, with a stock 2.6.6 which had just been released by the time I installed) this figure jumped to 35,000 queries per second. Is FreeBSD really this crap for MySQL? I was quite horrified. FreeBSD 5 has a number of threading libraries, and I tried them all. LinuxThreads won (slightly, there wasn't much in it). I'm very much a FreeBSD fan and I'd quite like to keep FreeBSD on this machine before it goes live, but the performance pales in comparison to Linux. I had to do absolutely no tweaking to achieve 35,000 queries/sec in Linux. Has anyone else observed similar behaviour? Does anyone else have similar hardware with FreeBSD on? Have you fared any better? Thanks for any comments, -- Chris -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
