For the past few days, one of the server is causing a bandwidth utilization surge for the entire rack on almost daily basis. It happen for a few minutes and it went off then it will be the same thing again the next day. When the surge is happening, most of the servers on the same segment will be inaccessible for the few minutes.
The bandwidth utilization graph for my rack is recording an abnormal surge from (6mbps --> 90mbps) for the few minutes. My MRTG is showing 2 of the Plesk servers giving the problem but the NOC guys said it the Cpanel that causing the problem.
I tried logging in to both servers but could not find what's the cause for this.
How to find what Perl script is causing high CPU usage?
I logged into my CentOS box tonight and notice after viewing the output of the "top" command that there are the following lines of output that have me concerned. What command can I use to find the source of the Perl script that is causing the CPU spike?
It seems it's been running for some time too. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30120 apache 25 0 6908 4544 1216 R 99.8 0.2 13416:07 perl 30654 apache 25 0 8028 4508 1212 R 99.4 0.2 13417:22 perl 21273 apache 25 0 7584 4528 1200 R 98.1 0.2 2225:12 perl 20516 apache 25 0 6760 4540 1232 R 96.8 0.2 2221:30 perl
It's been a while since I've posted in this area of the forum, but was just wondering if by now someone or some company has developed a script/software that you can install on your server that will tell you the exact area where the high CPU load is coming from, such as from someone sending email, a certain users account, and etc?
Most times, you have to be mointoring your server at the time of the high load to be exactly sure of what is causing the high load, so, I'm talking about something that will email you right on the spot of the high load in case you are away and will know what caused it.
Most I've seen only tell you that you have a high load, but don't tell you what exactly caused it.
I have a site that is eating up my server resources and need to know what the best solution for this is. I'm thinking of getting another server just for mysql but do not know what specs the server should be to handle the current traffic/database load and have the site run smoothly without slowing down to a snail's pace.
An alternative is to get another server just for the videos being served and leave the database and html on the current server. This is where I'm stuck and don't know what route to take with this.
I've attached screenshots of top and bandwidth usage per day. Hopefully with this information you could tell me if I need another server or if there are any things I can do to the current server to help things move faster.
[mysqlhotcopy] interactive-timeout Whenever there are a lot of members online on my forum, the iowait shoot up, >30% and often times hovering at 60%. It'll eventually drop down to normal levels. However, during the high iowait, there are over 2.5GB of free memory according to the command, free -m
is it due to mysql not optimized or other processes? I don't think the bottleneck is on the cpu or ram.
a few times, my host contacted me and said that my account is suspended due to high usage of server resources.
I have 3 sites using SMF (a forum script.) I have around 8500 visitors and 3 million page views per month in total.
can this be a reason of high usage?
if it's what's the meaning of terabyte traffic limit ? which you can never use
I asked to my host if they could let me know what's causing high server resources usage. here is the answer:
We do not know which domain or script caused this high usage, it is your responsibility to investigate. I would suggest that you go through your raw access logs to see the most requested pages and then investigate those further. After you find the pages responsible, please optimize them so you are not using so many server resources.
so if a host wants simply to restrict traffic limit, they have a pre-reason under hand.high server usage! yes but how will I know that? how will I trust that it's true?
when I ask why my sites are down, they can easily tell me that it's because of high server usage!
for the last few days, i am facing high memory usage up to 90%.
Memory usage get's high, even if i don't have many visitors online. I have to restart httpd to get the memory to normal. some times, server loads, get's high aswell.
In error logs (only unusual things i see):
Code: [Sat Jan 6 10:37:04 2007] [error] mod_gzip: TRANSMIT_ERROR:ISMEM:104 [Sat Jan 6 10:37:25 2007] [error] mod_gzip: TRANSMIT_ERROR:ISMEM:104
I got 5 wordpress and 5 statics website on this server and 100 visitors by 24H00 each day.
Question 1 : Why the memory is so low and the swap so high ? Question 2 : Why i don't find high usage process in top command ? Question 3 How can i resolve this problem ?
I have a linux server that is only hosting one site , and although the httpd and mysql are working well , then the server load is high and when I restart the server the server load is high till the swap accelerates to 100% and then it uses the memory alot.
today i got a message from a client asking about hosting his video himself, catch is, he has a shitload of viewers, im looking at servers in the range of quad core (maybe dual quad), 8gig, 4 hdd raid10, gige uplink, however the kicker, depending on how out of whack my estimates are, 100 to 400mbit SUSTAINED upstream (spiking all the way to max'n that 'little' gige pipe)
Has anyone got suggestions on who i should even consider for this? I'm a bit dumbfounded myself as i'v never even thought about a server on this much sustained bandwidth before today.
Like if you try to make your own server, it would cost a few thousand right? Or bought one from IBM or something. If you rent a server, it could cost you like double that I notice or even more in a period of a year.
I was looking at the prices of Xeon 5420 and they are like only 400 or something. Motherboard, ram, hdd's shouldn't amount to too much right?
And companies are charging like 50 bucks a month for a 2 gigs of ram.
Or am I actually looking at this wrong and actually am looking at desktop components? So is bandwidth the cost for these prices? In the long run aren't people being ripped off?
if I could get some input on this. Currently I'm running an Opteron 246, 2GB RAM with 2TB bandwidth/mo. I run a single site which is currently 99% HTML, along with an invision forum which is fairly popular. I get about 300-400k pageviews per day.
Right now the server is able to handle this stuff without much of a problem, and the average CPU load is between .5 and 3 (after a TON of tweaking!) - the only exception is when the forum db is being backed up/optimized, which isn't a huge problem since it happens during the off hours.
The problem is that I'm running out of bandwidth quickly, and need to come up with some kind of solution soon. My current provider offers bandwidth at $1/GB, which to me seems crazy compared to other providers, so that's not really an option.
I was thinking about switching to a more affordable provider and upgrading hardware, but I'm not sure what the best approach would be. I'm in the process of moving my HTML content over to a PHP-powered CMS, so I need to make sure whatever I do can handle that... What might be a decent setup for a site like mine which consumes a lot of bandwidth and will probably need more CPU power in the near future for PHP/MySQL stuff?
I have a site that uses extreme amounts of bandwidth, I checked some of the popular companies like serverbeach and softlayer. Right now I'm leaning more towards serverbeach because they are cheaper, Are they a good company to go with? Let me know if you have any other recommendations.
I have server with P4 ( 2.4ghz) 2gb ram with cpanel and centos.
When I get more than 300 users online on my forum. Server load remains under 2 but Ram usage get's high upto 90% every 10 to 3 minutes. I have to restart apache in order to keep it down.
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 have a quad core Intel XEON 5130 @ 1.60GHz . with 6giga now of memory . i have about 300 account in it . CENTOS Enterprise 4.6 installed .
the probleme is that the memory server it used in totaly . after i was just 2Gb of ram , but sometimes the server lod arrive at 50% . for that i have added more memory (4Gb) , when i added it the memroy usage is always about 4giga sometimes about 3980Mb . the load is normal , but sometimes the server loas arrive at 50% or 60% (this is just in specific times) . after i have decided to add 2 Gb more , now is 6gb in the server . but also all the 6giag of ram is used , the load is normal but memory is all used , look to the top command
now iam haveing more that 0.50-1.20 cpu useage,also cpu useage is also increased i hosted only 6 site out what only one site use MSQL all other site are plain download site,how to reduce the cpu load can u figure me out this issue also give me some tips to reduce the cpu usage
I noticed high cpu usage on my server since a couple of days ago. I neither updated software nor changed the configurations on the server. The server load was about 0.5 ~ 1.0 but now the average CPU load does not go below 5.0
when I stop apache (1.3) the load goes down and as soon as I start it up the load start increasing.
I checked for DoS but it seems nothing exists of this type.
I tried to follow the access_log file but from the first view nothing is strange there.
I don't have any control panel on the server. just Apache, FTP and SSH installed.
