I have a PS that we have been using for several years. For the longest time we have had it running memcron and consistently using minimum memory....
Over the past couple of months, the memory usage has been causing the PS to give us regular warnings about instability, and the PS is resetting itself.
If you are familiar with this, you will know the PS usage reports in the panel do not help since they do not record what happens at the time of the 'overload' and overall usages seems consistently below the minimum PS setting. Even disabling memcron and doubling this to 600mb leaves me with stability emails and PS reboots.
I have looked at TOP for a long while and never see amazing spikes, however I do see 5-10% memory usage per domain on the PS - still not enough to go over the limit - and certainly not since I understand the PS also has a burst limit for short intervals...
I have followed some of the instructions in the Wiki to try to ascertain what is the cause - but I do not see anything Obvious - and do not have more time to dig (time to learn where to dig, how to dig and then do the digging!)
At this point I am about to move away from DH because I cannot understand what I need to do other than jack up the memory (and the price) to levels that do not seem necessary for our usage.
Before I do this, I would like to see if anyone on the board who is familiar with DH PS system, and maybe has some experience solving this themselves, could assist. It could be as simple as adjusting a couple of settings, or it could be something more involved like stitching webservers (I have read the apache is not very parsimonious in its memory use, and something like lighttpd is a better choice?)
Since it will cost me a lot of time to move, or more money in PS fees to keep pushing the memory up, I can justify paying for this service, but am really not sure what it will take (hopefully not too much if its is done by someone who knows their stuff and can zero in on the problem fast!).
If you think you can help - and have an idea how you would charge for this, please PM me your contact details and I will be in touch to work out how to proceed.
(PS: I am located in Singapore - and if necessary can talk via skype - but do bear in mind the time difference since we are on the other side of the world from any experts in the US. Late night communication is not a problem on our side though)