Finding Load Spike Cause
May 3, 2009Is there a method for tracking events prior to severe server load? I get these load spikes and am trying to track down their cause ..
OS: CentOS
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Load Spike On VPS (Liquid Web)
Sep 28, 2008I just moved my site from other VPS hosting into Liquid Web for around 2weeks now. I choose the VPS1 package with WHT promotion..
First impression, I do really satisfied with the VPS performance (server load average bellow 1), also the support team. All of my eMail was replied pretty fast in under 15minutes.
But, I do have one problem. Please note that I'm not complaining here.. I just want to ask other user of LW or maybe other hosting.
Almost everyday (well, I think it is).. I got a load spike on my VPS. It's always around midnight (GMT -5). Based on LW staff have informed me, it's because of the main node full backup process, which is can't be altered. The load spike make my site sometimes temporary can't be accessed, because the server load might become above 5, and the highest one is around 28.
Do WHT user has any similar issue like me? Any solution or suggestion I can take to minimize the effect of the backup process?
Huge Spike Server Load Of 192 O.O
Jul 8, 2007Just few mins ago, my site went down so I went to check up through putty, and when i put Top this is what i got:
top - 09:49:35 up 5 days, 14:41, 2 users, load average: 192.59, 109.31, 62.29
Tasks: 299 total, 3 running, 296 sleeping, 0 stopped, 0 zombie
Cpu(s): 4.0% us, 5.3% sy, 0.0% ni, 0.0% id, 88.7% wa, 0.3% hi, 1.7% si
Mem: 1009272k total, 1001268k used, 8004k free, 124k buffers
Swap: 3919840k total, 1518816k used, 2401024k free, 14676k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
14263 apache 17 0 201m 9m 3788 D 1.0 1.0 0:04.74 httpd
16772 apache 17 0 152m 13m 5340 R 1.0 1.4 0:00.82 httpd
16881 apache 16 0 155m 14m 5368 D 1.0 1.4 0:00.52 httpd
16767 apache 16 0 154m 14m 5352 D 0.7 1.4 0:00.48 httpd
16864 apache 16 0 155m 15m 5364 D 0.7 1.6 0:00.80 httpd
16874 apache 17 0 155m 14m 5416 D 0.7 1.4 0:00.60 httpd
8900 apache 17 0 200m 12m 3844 D 0.3 1.3 0:10.60 httpd
13680 apache 17 0 202m 10m 3944 D 0.3 1.0 0:06.05 httpd
14687 apache 17 0 202m 11m 4060 D 0.3 1.2 0:06.12 httpd
14838 apache 16 0 206m 16m 5624 D 0.3 1.6 0:08.19 httpd
15858 apache 17 0 152m 13m 5452 D 0.3 1.4 0:01.39 httpd
16593 apache 17 0 150m 9180 3664 D 0.3 0.9 0:00.49 httpd
16668 apache 17 0 200m 7304 3496 D 0.3 0.7 0:00.72 httpd
16703 apache 17 0 149m 7208 3192 D 0.3 0.7 0:00.61 httpd
16750 apache 17 0 151m 14m 5268 D 0.3 1.5 0:00.81 httpd
16855 apache 17 0 200m 6616 3480 D 0.3 0.7 0:00.68 httpd
16863 apache 17 0 156m 13m 5500 D 0.3 1.3 0:00.61 httpd
But after few mins, the server load went down to 5 What could've caused the huge server overload problem?
Server spec:
64 3500+
1Gb of Ram
Tracing Cause Of Server Load Spike *after* Reboot
Apr 9, 2009I have a cpanel, centos server that had to be rebooted due to the high load spike. I was unable to ssh in nor enter whm prior to the reboot so my only option was of course to reboot the server.
Now, I'm trying to trace the cause of the spike. RTG graphs show no indication of a ddos attack.
Inside whm, CPU/Memory/MySQL Usage shows no reds nor yellow warnings either except red for gzip (backup process) at 19% CPU. I doubt this is the cause.
This is from /var/log/messages of the logs slightly before and after the reboot.
Code:
Apr 9 13:31:49 server pure-ftpd: (?@70.250.201.162) [INFO] Logout.
Apr 9 13:32:05 server pure-ftpd: (?@xxx.xxx.85.3) [INFO] New connection from xxx.xxx.85.3
Apr 9 13:32:28 server pure-ftpd: (?@xxx.xxx.85.3) [INFO] New connection from xxx.xxx.85.3 .......
Trace Reason For Spike Load On Shared Server
Jun 19, 2009I have a shared server (root access) using Cpanel / Centos with suphp enabled.
Twice this week the sever's load skyrocketed and was unable to login to trace teh cause, had to reboot instead.
After reboot, I went to whm > CPU/Memory/MySQL Usage and saw nothing in red aside netstat (21% cpu). I'm not sure if this is the cause, but how can I trace the absolute user or script causing this spike?
Finding Cause Of Load (Red Dot Flashing In WHM)
Sep 10, 2007See attached screencaps for load problem. I'm the only user on the machine and only run gallery2.
First response from support:
#########################
Load averaged is calculated by the number of processes that want to run / over how much CPU time they want.
On a multi processor box, you need to read load with a grain of salt.
A load of 4 on a box with 4 cpus is the same as a load of 1 on a box with a single cpu.
A load of 8 is not high enough for me to freak out on a 4 cpu box. I would up the limits of the stats processing in statistics configuration.
###########################
I replied:
Did you guys make any changes after my ticket? Load dropped, but the server was responding slowly, and when I clicked on apache status in WHM it said unable to process. I restarted apache via WHM and that error went away. Right now it says:
Server uptime: 59 minutes 34 seconds
Total accesses: 187164 - Total Traffic: 65.0 MB
CPU Usage: u641.12 s66.88 cu0 cs0 - 19.8% CPU load
52.4 requests/sec - 18.6 kB/second - 364 B/request
150 requests currently being processed, 0 idle servers
The gallery is performing faster since the reset.
Two questions:
1) Right after the reset the server load as reported by WHM jumped from 1 to 10 (where it remains) why?
2) When I see the load spike, say to 30, how can I figure out the cause? The load as reported by WHM might already be divided by four processors because when I put the gallery on a single core server, load jumps to 50+
They replied:
##################################
I didn't see any changes to the configuration, I have however made some of my own changes to the configuration at this time to better cycle connections :
root@ [/usr/local/apache/conf]# diff httpd.conf httpd.conf.bak.fmerrill
107c107
< Timeout 60
---
> Timeout 300
126c126
< KeepAliveTimeout 5
---
> KeepAliveTimeout 15
142c142
< MaxSpareServers 20
---
> MaxSpareServers 10
148c148
< StartServers 10
---
> StartServers 5
157c157
< MaxClients 350
---
> MaxClients 150
173c173
< MaxRequestsPerChild 5000
---
> MaxRequestsPerChild 0
####################################
Support didn't give me much info, how do I find the cause of the load - looks like httpd - should I switch to a company that can install apache2 w/cpanel 11, which is multithreaded and could make better use of the 4(?) processors? Why did the load jump back up to "normal" after restarting apache?
Monitoring And Finding Account(s) Which Create High Load
Jul 23, 2008I have a dedicated server and i want to monitoring a lot of thing.
First; there is ~110 web site account. Here is i want to know;
* How can i monitor over all visitors for accounts ?
* How can i find the account that causing hig load. I try mytop for mysql but i can't use it effectively.
* How can i find which php files running slow/causing load. If possible i want to know which account using how much cpu resource.
And please me show me a route for things like these.
Php Process Cpu Spike
Mar 24, 2008Is it normal for PHP to spike in cpu usage often? Which setting in php.ini can affect the cpu usage?
View 6 Replies View RelatedChoosing Hosting For Unpredictable Bandwidth Spike
Aug 11, 2008The company I work for is doing a promotional site that will probably involve a good chunk of progressive (as in, not quite the same as streaming) video -- basically my best guess is that everyone who views the site will likely download between 6 and 50 megabytes of video depending on how long they spend on the site, etc... I would imagine most people would be at the low end of that, maybe 12 megs, but it's hard to predict...
The tough spot is there will be TV and banner ads purchased for this promotion, and it's not entirely clear to us how good response will be. It could be 5,000 visitors in a day ... it could be 250,000 in a day... the response to various advertising campaigns our clients have done has just varied a lot...
So let's say we have 150,000 visitors downloading an average of 12.5 megs of video - that's about 2 terabytes of transfer in a month.
How much should we expect to pay for that kind of data transfer, and are there good providers that will scale with us? I don't think we mind sacrificing a few hundred bucks our first month only to find that traffic was low -- but if it's going to cost thousands to move 2-3 terabytes of data via a CDN, what are our other options? Does anyone scale well even if it's unpredictable? I realize we have to pay some sort of premium for that scalability or it's not really fair to the hosting provider.. but what price range should we be looking at?
Finding Spammers
Jul 31, 2007trying to find a spammer on my system, who just sent out and is still sending out 4000+ emails...
i have a centos vps with whm.
looked at exim_mainlog, there's nothign telling. the message body is visible, but the links it points to arent' hosted by me. there is no return address, its sending mail as nobody. phpsuexec is not an option.
Finding The Server Hog
May 19, 2009Anyone got any special programs or tools they use to find out what specific account and domain is abusing server resources?
I am running WHM/cPanel latest build along with the latest Apache, PHP, and MySQL.
Finding The Right Host
Nov 4, 2009I were already at two paid hosts and had no good experience.
Then I have tried a few freehosts and saw a lot of rubbish.
I searched and searched, chatted to support chats of hosts - but no luck yet!
then I came here and now I ask you to find a right (US) hosting service...
First I tell you what site I have, that you can truly estimate:
I have a private website and on it are many photoshop pictures for the design of my website (15kb-200kb per picture).
I offer 3D models for binary downloading in zip files (filesize
1 MB - 15 MB each). I need html, php, SSI, mysql, phpmyadmin, .htaccess and cpanel. I have alexa tracking, google ads and few other javascript tracking providers on my site which are loading heavy according to my former hosts opinion. I have few banner ads, popups, flash animations, the usual things on a site that it looks good to gamers.
Gamers are my main audience.
Diskspace used: currently 500 MB.*
Bandwidth: currently 150 GB / month*
Daily unique hits / pages: 15000.*
* Those values might grow in future.
Optional I have a bb forum for responses and questions installed, but I would reduce to HTML only, if it would be needed.
One host kicked me out without warning because of bandwidth / CPU, before I have used the bandwidth limit specified in my hosting plan.
Another one threw me out without notification because of 'abuse of server resources', whereby the reason or script has been not specified.
In both cases I have no clue what I had to do about.
I have only HTML, a MYBB, pictures, javascript, one database
and lots of traffic ofc.
Now I need a host who is willing / able to host that.
It's a private non-profit site, so the costs should be adequate.
I think I'm unable to go dedicated by fees, it should be still shared hosting.
My competition has similar sites, even larger. They host for free or for shared fees. I cannot ask them and didn't find out where they would host.
A domain I have already. Need just the DNS servers to point to a new host.
Finding This File
Apr 1, 2009finding this file
iam stuck in middle of install,that install need the below file
i tried in google i cant find it can anyone help me
to find the file
ffmpeg-SVN-r14473.tar.gz
Finding FTP Path
Nov 13, 2008I'm trying to transfer a cms from 1 site to another and I don't know the full ftp path.. I'm looking for the "/public_html/username/blank/blank/sitefolder" or something similar.. How do I figure this out?
View 2 Replies View RelatedHelp Finding Bottleneck
Sep 4, 2008Response time from my web server (running LAMP) was really slow this evening. mpstat showed nothing, CPU hovered under 5%, mem usage around 25%, iowait minimal. mysql processlist was mostly idle, no slow queries logged. Only other thing I can think of is the connection from the host itself? (Not my local connection as multiple users complained about slow performance.)
Concurrent users was higher than average, but shouldnt this manifest itself in higher CPU util?
My question was, is there something besides network latency I could be looking at? If it is network latency, what's the easiest way for me to confirm this? A simple ping?
Finding The Space
Aug 14, 2007I have a VDS with 20GB drive, currently its running at 81% capacity, I have looked around but am of the opinion its not the accounts that are using that much space.
Is there a simple method of finding out whihc folders are using all the space?
Finding Out Server X
Jan 22, 20071- is it possible to find out any server hardware info ?
2- is it possible to find out a web site is in which type of server (Resseller ? Dedicated ? VPS ? or x?)
Finding The Right Free Hosting
Jan 21, 2008I have searched the internet all over , to find a web host that offers :
FREE Domain Mapping
Full support of Wordpress << MySQL , PHP Send mail
Hot linking enabled
Great uptime
Decent bandwidth
speedy servers
NoOo Ads , and the ability to put mine
did it mention it should be?
Finding And Chmod The Www Folders
Oct 23, 2009i need to find al www folders within home directory with 777 permissions and need to chmod to 750.
if possible post the command to do it
Research - Finding A EU Provider
Jan 10, 2009I'm doing some research into EU data centres and was trying to find a list of good, reliable centres that offer good speeds to, and around, the whole of Europe - especially the UK.
The provider we currently use is LeaseWeb (NL), who have been very good, however, due to their servers being a very specific specification and currently not what we're looking for, we are looking for a good replacement.
I don't think I would like a centre that is located in the UK, whilst it would be better for us, it would not benefit all of our customers - a host somewhere in the middle would do great.
Finding Dedicated Host
May 4, 2009Currently have the following and pay $134 a month:
OS: CENTOS 4.7
Hardware: AMD HP A64 4200 DC/2GB/250GB SATA
Bandwidth: 1500GB
Control Panel: cPanel + Fantastico
IPs: 5 Useable
Location: US
I don't like my host, and would like to move to a similar price point with a new host. I am capable of managing almost all aspects of my server, only the initial configuration of things like PHP sometimes throw me.
Finding Shared Hosting
Jun 3, 2008This is my second time finding for a shared hosting. I am with ASMALLORANGE now, not that happy with it. I will post a review later on.
I need to host 3 sites, A static website; two wordpress.500mb space;
10gb bandwidth;
5 or more each for add-on domains; subdomain; email; sql etc.
Prefer to pay around $7USD. A buck more is alright.
Finding A Fast Host
May 4, 2008I have a site that is currently hosted in Australia and loads relatively quickly there , but it is very slow in Uk and France.
Eli kindly set up a trial at blurstorm but I am unhapy with the way it loads in australia which is its primary audience.
how to get my speeds up with the site? ATM there is a 2.8 mb swf file that loads in about 5 sec in aus but about 20 in europe.
Blurstorm is faster in europe(france)but unacceptably slow in Aus.
Is blurstorm considered fast servers on their reseller plans? Or do I need to upgrade my expenditure to get what I want?
Finding Out Mysql Port
Jun 8, 2008as you can see on my status2k 3306 is not my mysql port number. I cannot for the life of me figure out what it is. I don't remember changing it and my host will not help me figure out what it is.
I have root login and it's running centos and cpanel.
Finding 3000GB BW In California
Jun 12, 2008to fire up a P4 in California to target Asia. GBLX or Sprint or AT&T transit is a must. The usage for this server would be a ~7mbps average with 5 hour daily bursts up to 20mbps(comes out to around 2300GB).
PacificRack seemed perfect for my needs, but won't answer sales emails...I've read good things, but i'm worried about signing up.
My budget is around $200, this shouldn't be a problem right?
TOP - And Finding Out What Apache PIDs Are Doing
Feb 14, 2007You use "top", you see an Apache PID using 100% CPU - how do you find out which page it's displaying, basically anything to work out what's causing the problem?
The "top" display is great, but it's only a starting point.
Finding What Makes Up All That Bandwidth
Oct 28, 2007I got a cPanel notification that one of my client's had exceeded their bandwidth and so the site was down.
Checking, I found in AWStats that nearly 400+ MB was web traffic. It looks normal to me. However, AWStats simply grouped them all together under 'Others' without providing clear details.
Is there any other way I can find out what made up that 400+MB traffic?
Finding A Monitoring Software
Jun 18, 2007I am finding a monitoring software for my dedicated server that include monitoring web pages, Bandwidth...and i am using windows 2003 enterprise sp1
View 2 Replies View RelatedFinding Files On Server Using SSH
Apr 29, 2007Can someoen tell me the commands to
1) Find a specific file
2) File all files with a certain extension i.e MP3
Using SSH on a linux server?
Annoyed With Finding A Host
Oct 29, 2007I know everyone has to make a living, I get that. But I am having a hard time wrapping my head around why I must pay $15 per month extra to a host for ram upgrades to the dedicated servers I am pricing out. Seems like a nickle and dime thing to me.
I don't understand how people can charge like they do. I suppose if your not on contract that they have to cover their ends but maybe I am just missing the point or looking for too good of a deal.
