I m being with solar vps for more then 6 months, But these days it seems they are overselling their services. My vps is getting overloaded all the time. But i have reduced usage of this vps. Not sure why this is happening. Recently i have bought a vps from powervps. I cant find any configuration errors between these two in VZPP. So whats the problem can be?
Your fail counters are very very high for kmemsize and privvmpages, two of the most important parameters on a virtuozzo VPS. Running out of either can cause massive slowdowns and other problems that affect only your VPS.
The limits look to be quite generous, so I would venture that something inside *your* VPS is causing your performance issues.
Try restarting your VPS to reset the failcnt. Some versions of virtuozzo won't reset failcnt when restarting the VPS, but many do. Assuming you can get the failcnt reset to zero, it will be easy to tell if you're still running out of resources because failcnt will continue to increment upwards.
If you can't get it to reset to zero, it's no problem, just slightly more work for you. You need to write down the current failcnt numbers and watch to see if they increase. If they stay the same during your peak usage periods, then whatever caused the failcnt to increase probably isn't still happening.
As stated, your failcounts are very high, and you need to monitor your usage - something easy to do through Power Panel because it'll keep a history of your allocation failures.
Your gaurenteed memory is only 256mb, but your usage as shown is closer to 384mb - well into an ungaurenteed burst space. I've found that as a policy, SolarVPS gives less burst space than a lot of other hosts, a policy I feel it better protects the individual nodes.
Since your numproc is fairly low for those privvm and kmem stats, I think your own account is responsible for your resource problems, rather than a problem with the hardware node (eg, starved disk IO). Next time you notice that you're close to or out of resources, you should run top and see if the CPU utilization is excessivly high, or if there's significant disk IO wait.
I've been with Solar for nearly a year, and provided that I've kept my own usage in check, the performance has been nearly flawless.