On Sat, 2003-01-18 at 08:50, Kevin Keithan wrote: > So if the load on my server goes up and the memory is needed, it will be released? I have about 24 Students using MySQL over the next couple of months and I want everything ready. If I see the swap being used heavily should I be concerned? Sorry for all the questions, I'm not a guru on this. >
Yes to both questions. Well maybe not concerned but looking at top free and vmstat occationally are ways of monitoring the system resource usage. Performance will be slower if the system is constantly swapping to disk. Swap space as I understand it is virtual memory. If there is not enough memory (RAM) for all the programs launched, the system will put some of them into swap. Writing an reading from the disk is of course, much slower ( order of magnitude + typically) than real RAM memory. You can get into a situation called thrashing where a busy system is constantly moving stuff in and out of swap as it trys to service all the programs wating to run. The system can slow to a crawl at that point. Bret -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list
