I have a VPS at a reputable company. My package is currently at (CPU-1.98 GHZ, RAM-1344 MB, Disk Space-59 GB, Bandwidth-1050 GB) I have noticed that two time over the last 3 months I caught my VPS down. They told me I am running out of memory, but I dont have a lot of traffic. I am only using about 17gb bandwidth across all the sites. 95% are Wordpress. I asked about mod_deflate to increase loads speed but they said that would eat even more memory. I was also thinking of going with cache plugins because I can't do a CDN for 30 sites, but thats more memory also. What can I do to decrease my memory usage? I really didnt think my sites were that resource intensive. Is my only viable option to upgrade?
Also just checked these settings:
total used free shared buffers cached
Mem: 1376256 375096 1001160 0 0 0
-/+ buffers/cache: 375096 1001160
Swap: 0 0 0
Total: 1376256 375096 1001160