I think many friends, like me, can't resist the temptation of low prices and start small memory VPS 。 However, the side effect of low price is low speed, which is inevitable (if you have a choice of low price and high quality, you can share~). Today I will talk about the simple optimization of small memory VPS. Of course, the premise of the discussion is that you install KLOXO Panel. If you select the LNMP installation package, you don't need to look down.
[Optimization I] MySQL optimization
Optimization method:
First enter the/etc directory and edit my.cnf
Command: cd/etc first, then vi my.cnf
Add the following three lines under [mysqld]:
skip-locking
skip-bdb
skip-innodb
Restart MYSQL after saving
Command:/sbin/service mysqld restart
Now use top to see if the memory usage has dropped below 100M?
Function details:
Use the MySQL option of – skip locking to avoid external locking
Load the – skip bdb – skip innodb parameter to avoid memory waste
[Optimization II] Switch Site Programs
Optimization method:
You can see the following two pictures, which are the screenshots before and after switching website programs. The effect of switching to lighttpd is also immediate.
Others There are other optimizations that can also reduce memory consumption. For example, do not load modules that are not required by Apache, and manually modify httpd.conf; There are also djbdns of dns and bogofilter of spam. If they are not needed, they can be directly turned off in the service; There are also some things that are not needed very much: imap, qmail, iptables, etc. If all of them are turned off, it is estimated that the memory can be reduced to about 50.
[Postscript] In fact, these optimization methods I mentioned are only superficial, and the experts can only smile without saying anything. However, the effect of this operation is really obvious. As for the VPS I used in the above figure, 128MB of memory is basically consumed by one KLOXO without optimization. Therefore, optimization is necessary.
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