I'm running a single Magento website with only around 150 products, and very low traffic, on a VPS with 2 Cores and 4GB of ram. However I am getting constant warning emails about high Apache Memory usage and High CPU usage.
The server and site were working fine, however since the server failed (Power cut on upgrade at the hosts end) and we rebuilt the website I'm getting these warnings, my host said it is just the website and the server needed upgrading... to which I did (server was a 1 core 2GB ram server). However since I've upgraded I'm still getting these warning emails.
I'm really new to VPS's and plesk so I'm wondering what I can do to try and track down what is causing these high usage as I'm 100% certain the site was fine before. The server has default build both before and after the fail.
I currently have 2 VPSs that I'm monitoring and I noticed that on one of them the memory usage is much higher than the other which doesn't make sense to me. I tracked the high memory usage to the Apache processes.
Here's the overview of the VPSs:
LiquidWeb VPS- 512MB RAM, 10 Sites with minimal usage. Average httpd process (Owner Priority Cpu% Mem% Command): nobody 0 0.0 1.2 /usr/local/apache/bin/httpd -k start -DSSL
Virpus VPS- 384MB RAM, 61 sites with moderate usage. Average httpd process (Owner Priority Cpu% Mem% Command): nobody 0 0.0 0.3 /usr/local/apache/bin/httpd -k start -DSSL
Both Apache configurations are identical, the only difference besides the hardware is that LiquidWeb runs CentOS4.7 and Virpus runs CentOS5.2, any ideas? It's not to big of a deal since I'm not near my limit for either of them but I was just curious.
We are currently running plesk 11.5 and over the last few months, the apache memory usage has been very high. On investigation we have gone through the logs and we can't find a cause.
I can issue a service httpd restart and the memory drops for about 30 minutes and then we see the apache memory grow to almost 1.5 - 2GB. Why this keeps happening?
I just got a new server Dual E5520 with 6GB RAM, SAS 15k rpm raid10. It's running well. However, the memory usage is just around 2.5GB, even when I have more traffic. Here is the kernel info
Quote:
# uname -a Linux server2.[url]2.6.18-128.1.10.el5 #1 SMP Thu May 7 10:35:59 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
Any idea that we can put more content into memory?
It seems that a user may get more percentage of memory purchased for real use. I've got a xen VPS which has access to all 8 CPU cores. Guess this is a good thing to be able to burst CPU resources
But this requires lots of kthread running to be able to access all CPU resources, which in turn consumes quite some memory, a valuable, limited resource on a small VPS instance.
The output above is grathered when almost no other services are running except sshd.
While XEN VPS surely consumes more memory than OVZ VPS, I would suggest the Xen VPS can be built in such a way less memory is required to just do the housekeeping.
Of course, that would imply careful provisioning, maybe less "overselling" for the sake of lack of a term. The bottom line is how we can reduce the memory usage, while ensure individual VPS instance can still have fair share of CPU if needed.
Is there anyway in the VPS kernel config which can disable access to certain CPU core, thus reducing the number of kthreads and etc?
I do not know if i have problems with my vps but "top" output looks strange for me. It looks like apache processes have huge VIRT parameter and all processes have huge SWAP param.
My VPS 712 guaranteed and 1024 burstable. I'm running 10 virt hosts with very small traffic. Totally not more than 500 visits/day. Most of sites are static and only two are PHP.
how much adding php to apache will increase memory usage on a VPS? This would be php5.
I need it to use phpMyAdmin to manage my MySQL database (actual site is running off tomcat but jspmyadmin won't work for some reason).
Or can someone recommend a database design tool (I've used toad data modeler before) which I can use on my home pc to generate SQL statements for execution on the server (and please don't say notepad).
I am trying to run tomcat on my linux server and I am getting memory allocation error. When I see check memory usage it is full, but when I check the cpu usage it show as this:
Am using Hypervm,my all vms are not using more than 512 MB memory but when i click on server as localhost the there is show maximum memory usage I have total 8 GB it always show 5-6 GB usage and never drop down, How can I fix this matters?
I was just wondering about DA memory load. Like CPANEL load around 300mb and LXADMIN about 20mb. I was going to get VPS with 256 only to host 40-50 church sites with just static html, not dynamic or anything. Greatly appreciated with your input. I'm still learning all of this
I have a VPS with 384 MB RAM, with free about 100-120 MB. I've upgraded to 512 MB (to have some other features...). I notice that the memory usage is always about 250-300 MB. For example, now:
Code: [root@host ~]# free -m total used free shared buffers cached Mem: 512 311 200 0 0 0 -/+ buffers/cache: 311 200 Swap: 0 0 0 But PHP tells "out of memory" in some tasks
The current PHP config is memory limit 192 MB (it was 96 MB, then I tried to increase). [url]
Code: <b>Fatal error</b>: Out of memory (allocated 19660800) (tried to allocate 39 bytes) in <b>##hidden##/includes/joomla.php</b> on line <b>3041</b><br />
I'm currently playing with my dedicated server, it isn't much but for learning purposes it's more than enough.
I have CentOS 5.3 installed on the server.
It's Intel Atom 330 with 2 GB RAM.
Now my question is:
When server is running nothing but basic install memory comsumption is aroun 500-600 MB.
Today I have rsynced 11 GB of data from one of my VPSs to the ded server and the memory comsumption on the server sky rocketed to 2 GB, leaving only 56 Mb free.
Since a short while back my server memory usage is 100%. The amount of visitors decreased so the memory should be lower in consumption than before.
I suspect a newly installed script could have bugs or misuse of the server by hackers. I don't know how to see on the server what script or what part makes the memory use so high. I see Apache is very high but I'm on VPS. Technical data........
My managed dedicated server at 1and 1 has very low load, but quite slow, I was trying to figure out the reason. The top and free command ( I run at midnight without traffic), here is the result. Can anybody tell me if the memory usage is normal, anything suspicious. Look like the memory usage is high even with no traffic, but 1and 1 support say that's because it's reserved for cache.
It tells me that I only have 50 MB of memory left and it drops down to ~20 MB after Apache has been running for a while. Once it runs out of that 20 MB I will start swapping right? I have also run this command and do not see any process taking up anywhere close to what is being reported:
I have a VPS with 512 MB ram. I have 6 sites hosted on my VPS, of which 3 contains only static pages. My site is not very traffic heavy. Infact I moved to my VPS only 3 months back, until then it was running on a shared server with no problem.
But still, I am always running out of RAM. I have upgraded my account to 512 MB ram from 256MB because of this. Can anyone please tell me how I can find out what is the cause of this excessive memory usage? On rebooting my server, the RAM usage goes down to about 250MB.
i order the latest plan of vps in some company, and got 898MB of dedicated memory, but as you can see in memory usage, how come my memory only 23mb(free usage) i just reboot and memory usage only 23mb, thats why my website taking so long to open other page.
is it my mistake?(im running forum,but only 2 users currently online, and not opening other website) or is it the company server that took somany client.
Currently i have a small server with 512 Mb of ram i doing some minor hosting.. sometimes..my free memory is only left with 15 mb..is there a concern down here?
is there anyway i can find out what are using up my memory..? And should i just upgrade to 1Gb instead?
Somtimes my mail queue ..will also take up like 20 to 30 mb of memory as they keep on trying to resend themself
My mysql is using alot of memory although there is not much data into the mysql tables. I tried to control mysql usage by editing my.cnf file but that didnt help.
Which variables should I edit in my.cnf to keep mysql using low memory?
I edited sort_buffer_size, key_buffer_size but that didnt help much. It uses alot of per-thread memory as well.
I purchased a VPS at wiredtree to upload a site that is in the works so that it would be "ready" once it was launched (had it sitting on a shared server before). So I have this domain on there, as well as a small wordpress blog. In total I'm get a very miniscule trickle of visitors to these websites (as they are not officially launched), around 100 visits per day, many of which are only 1 pageview visits.
My problem is, my server is already idling over its memory limit of 256mb. This is causing major slowdowns, and processes like cpanel are constantly be killed and I can't login.
Does anyone have any idea what is causing my high memory usage? I just can't image that the visitors I am getting are doing much, as for the majority of the day I have absolutely no one viewing my domains, yet my memory usage is still over the limit.
Wiredtree support says its up to me to optimize my msql/php scripts etc for low mem usage, but I don't see how this will help when there is no one using them in the first place.
