Rows examined / sent

2002-10-29 Thread universe
Hi, from my slow queries logfile: # Query_time: 17 Lock_time: 6 Rows_sent: 207550 Rows_examined: 207550 SELECT ID FROM sys_users; 1 row = 1 user. mySQL gets queried through PHP. I'd like to optimize this. 17 seconds is too much. How do you guys judge the actual CPU impact of the process tha

Re: mysqld bringing down server

2002-10-28 Thread universe
Hi David, I've seen a similar behavior on our machine. We had someone re-write the code for a particular PHP site that was producing tons of slow queries (while the CPU was 100% idle the script would still take 15 seconds to run its queries) and the problem was (sort of) fixed. Have a constant lo

mySQL consuming too much CPU / processes never close

2002-10-25 Thread universe
Hi, mySQL 3.23.49 on Debian GNU/Linux 3.0, Kernel 2.4.19 on a Xeon 2 Ghz (1 CPU) and 2 GB DDR-RAM. The following problem arises: All mysqld processes (UNIX) consume too much CPU power. There are usually a 4-10 active processes that want 30% to 99.9% of CPU power - EACH of them. "top" just showed