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Questions about server hardware and software performance, or network performance.

9 votes
Accepted

AMD 24 core server memory bandwidth

You are forcing the system to operate in single channel (!) mode by using 5-5 modules per CPU instead of 4-4 or 8-8. That's the reason. Try removing 1 - 1 and report back. The 6164 is a G34 socket CP …
chx's user avatar
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2 votes

To improve SQL performance, why not just put lots of RAM rather than having faster hard disks?

RAM is the new disk, disk is the new tape. In http://www.tbray.org/ongoing/When/200x/2006/05/24/On-Grids . Note that was six years ago. Yes, we have database systems that try (and try hard) to ke …
chx's user avatar
  • 1,715
0 votes

MySQL runs at >=100% CPU, heavy disk I/O?

Do you happen to have the full query log enabled? check for log=/path/to/log in my.cnf and kill it if you have. It is possible that just writing the binlog is this slow but unlikely for a typical web …
chx's user avatar
  • 1,715