-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 What you need more of depends on what you are about to run out of. If you always have plenty of free memory, adding more RAM won't help. If the load average is always low, adding more CPUs won't help. You also need to look at how hard your network connections are being driven. For example, if you are expecting a tenfold increase in traffic and your interfaces are averaging 70% of capacity, you may need more or faster NICs. You need to look at the bandwidth of your storage too. Throwing memory at the problem can help up to a point, but you could get into a situation where it's just not possible to fill memory fast enough to meet demand. More disks on more controllers might be indicated. You'd need more complete servers if the limiting factor is bus bandwidth. You need to start by measuring a lot of things to see where the bottlenecks are. (After you overcome the first one, you'll find a second one right behind it. Performance management is the art of rearranging bottlenecks until you don't reach them.) - -- Mark H. Wood, Lead System Programmer mwood@xxxxxxxxx Open-source executable: $0.00. Source: $0.00 Control: priceless! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: pgpenvelope 2.10.2 - http://pgpenvelope.sourceforge.net/ iD8DBQFEPQYKs/NR4JuTKG8RAl38AJ9Td+URi+RDPpvvbizu9F9K0NuARACgjrGY 4rrg35DeLNGOMFXeDpPJbZE= =Cqwq -----END PGP SIGNATURE----- --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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