We have a low traffic Magento 1.7 on a 2GB RAM VPS, and when we changed to a new theme (a SNS theme) the CPU to 100% usage almost all the time, even with very little traffic, and the site is almost unusable.
On a development server we had no problem, and when we rollback to the previous theme (quite outdated) there is no problem, but with this theme/server it's very bad.
We changed the part to only 15 servers/maxclients because with the default (8-50) we had downtime when the traffic was up. That change, suggested by this StackOverflow post was good because we don't have downtime anymore, but the server still is very slow (like 10sec-40sec each call slow).
I know 2GB of RAM is very low, but that's the server we got and we can't do anything about it. We can't upgrade Magento either :(
Would you give us any suggestion?
Magento version: 188.8.131.52 Apache version: Apache/2.2.15 (Unix) PHP version: 5.3.26 (cli) MySql version: 5.5.31-log
Processor : AMD Opteron(tm) Processor 4332 HE CPU Cores : 2 Frequency : 3000.112 MHz Memory : 1998 MB Swap : 1953 MB OS : CentOS release 6.4 (Final) Arch : x86_64 (64 Bit) Kernel : 2.6.32-358.11.1.el6.x86_64