Thanks, everyone, for the help! I'll plan on upgrading the server soon. - Matt James President Flat Cap Apps http://www.flatcapapps.com
On Mar 20, 2012, at 11:46 PM, Chuck Tetlow wrote: > Matthew James wrote: > > > The system overall has 512MB of memory, which I know is not much, > > > however, there's not much running on the box at this time either. > > > > > > When I go into /top/, I see the following stats: > > > Mem: 509084k total, 426320k used, 82764k free, 8668k buffers > > > Swap: 262140k total, 262092k used, 48k free, 212316k cached > > > > > > However, when I look down the list of processes, only spamd is taking up > > > any memory remotely high -- 9.1%. All other processes are showing less > > > than 1% usage (usually far less). Also, the load average on this server > > > is almost always below 1, so I'm not sure what the repercussions are for > > > letting it ride with memory warnings like this. It doesn't appear to be > > > having a noticeable affect on performance, however, right now it's only > > > really being used by a few people. > > > > Look at all the Swap that the box is using... it's choking! > > > > 512MB RAM for any modern box, esp if you're using any dynamic sites > > (PHP, MySQL) is really quite low. I would not be surprised to see > > performance hits given the specs. > > > > So now what is happening is you're draining the available RAM and > > swapping memory to an extremely low performance disk (remember, you're > > sharing that disk throughput with however many other users doing > > goodness knows what.) > > > > We charge $10 more per month, but our minimal BlueOnyx VPS has 4 CPU > > units and 1GB RAM and 500GB transfer. I certainly would not recommend > > more than that, and that is why we don't offer less than that. > > > > -- > > Chris Gebhardt > > > I agree with Chris - 512Meg of RAM is ridiculous for a virtual hosting > server. Especially when you state you are running SPAM Assassin (spamd). > That's a memory hog, and you've barely got enough memory for the box to run > without SPAM Assassin. > > All the BlueOnyx servers I set up for hosting customers will have 1Gig RAM > minimum. And if they're going to use SPAM Assassin, or any other resource > hog - that's bumped to 2Gig minimum. I've seen BX servers with just 512 Meg > RAM - and they just can't handle much. Two to five small sites without much > traffic, e-mail, or SPAM filtering is all you'll be able to do. Anything > more, and its going to be caching all the time - as Chris pointed out your > box is doing. > > That "top" output shows you're using 262Meg of cache (and that's all the > cache there is. A mistake right there - always configure at least two to > three times the cache as you have in RAM). Oh, and the reason the processor > load is low - its always waiting on the cache memory! Its constantly waiting > on data reading/writing to/from the hard drive - and that's why the CPU load > is low. > > I suggest you try adding another 512Meg to 1Gig to your server and see how > much it speeds up! Add enough that when it finishes booting up, the "top" > output shows no cache usage (no more than a 100K or so at most - and that > shouldn't change as you watch it). If its having to use cache right after > boot - you still don't have enough RAM. > > > > Chuck > > _______________________________________________ > Blueonyx mailing list > Blueonyx@mail.blueonyx.it > http://mail.blueonyx.it/mailman/listinfo/blueonyx
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