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1
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0answers
64 views

LA problems while serving 40M requests daily with php-fpm, nginx

I have server with FreeBSD (16 cores with HT, SSD, 32Gb RAM) which is getting about 40M http requests daily. All requests are served by nginx + php-fpm. At these graphs you see that we have a ...
0
votes
0answers
32 views

Strange load average behaviour

We have a daemon which collects system data and writes it into database. Sometimes the load average goes very high without apparent reason. Here is sample output. | id | server_id | datetime ...
-4
votes
1answer
77 views

Very bad server response time. how to fixed? [closed]

There are many images on a heavy template of word press installed on web site here @ puttinout.com usually my server went down and we facing bad experience from our readers. Please guide me the ...
1
vote
1answer
41 views

Cannot create more than 40 processes for apache worker

I am trying to handle 3000 concurrent user requests on a front end web proxy server. The front end just caches static files and passes on the rest of the page requests to a back end application ...
0
votes
1answer
52 views

CPU load on some apache threads is >10%, other threads are 0.2%

I have an apache box running a WordPress website. For some reason it seems some apache threads are using most of the CPU (10%+), and the remainder little (0.1~). The box is a dual CPU, Intel(R) ...
2
votes
1answer
25 views

Reserve Memory For Shell / Putty To Login When Server Is Overloaded (High Load)

I am currently trying to improve my failover strategies. Aside from adding a DNS failover I want to make sure I am able to log in via a shell Whenever the server is overloaded I am unable to log in ...
1
vote
1answer
96 views

Redundant web static content storage - what technologies? (small scale) [closed]

Current situation of our static web servers: 2x 2U servers full of SSDs (raid5) for storing data data are written to them only through our applications (*) huge amount of small image files (one ...
1
vote
2answers
110 views

System load average is extremely high

I own a website which is running on a VPS since last week. From monday until saturday, everything is going smoothly. The website has around 4.500 unique visitors a day, and the load average and ...
7
votes
4answers
433 views

How to limit number of sessions?

I need a way to track and limit web sessions to a web app. A "session" is loosely defined as the single user browsing the pages of the said web app. I think it can be translated to: a session is ...
0
votes
1answer
70 views

12.04 Migration Process time delay

We have an issue in our server that is the migration process in taking time and also the load in the server is getting high due to that. No LSB modules are available. Distributor ID: Ubuntu ...
0
votes
1answer
48 views

Recording traffic for later replay

In these days we're experiencing huge (based on our recent experience) traffic on our platform, this is slowing us down to a crawl. Today we will probably handle the problem by cutting away a couple ...
0
votes
2answers
263 views

Too many apache processes, killing the CPU

I am noticed that too many apache processes killing the CPU in my dedicated server. 14193 (Trace) (Kill) nobody 0 66.1 0.0 /usr/local/apache/bin/httpd -k start -DSSL 14128 (Trace) (Kill) ...
-1
votes
1answer
26 views

How to increase the default number of Postgres processes?

Disclaimer: I'm relatively new to Postgres. On my production EC2 DB server, I'm experiencing high CPU usage on two of the five CPUs, ultimately resulting in latency for users of my application. I've ...
-2
votes
2answers
115 views

High Load average threshold in linux

My one of friend said that his server load average sometime goes above 500-1000, for me it is strange value because I never saw load average more than 10. I asked him give me some snapshot of top and ...
0
votes
1answer
122 views

Tracing down High Linux Load - HDD at fault or too many interrupts ? (ksoftirqd Time 437:44.13)

Server Stats: "cat /proc/version" Output Linux version 2.6.18-308.24.1.el5 (mockbuild@builder17.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)) #1 SMP Tue Dec 4 17:43:34 EST 2012 ...
1
vote
1answer
69 views

Load average 1.00 while top seems to show the server as idle

My server is not responding to HTTP requests, and it took me a long time before being able to log in with SSH; it all looks like the server is overloaded and on its knees. It already did that a few ...
0
votes
0answers
289 views

PHP-FPM / NGINX high CPU load after switch to Debian 7

I wanted to ask if someone can give me a hint how to identifiy a "high" CPU load problem with an PHP application. We are running our application with PHP-FPM PHP 5.3.27-1~dotdeb.0 with Suhosin-Patch ...
0
votes
1answer
41 views

How to Monitor “NetworkIn” Activity on AWS?

Last night our AWS EC2 Linux Web Server started sending out CloudWatch notices due to high CPUUtilization. We had a normal number of users active, so I am struggling a bit to figure out where the ...
1
vote
3answers
194 views

slow website load and high memory usage

my site has been slowed down last couple of days ... some image doesn't show up ... i got 408 Request Time-out: Server timeout waiting for the HTTP request from the client couple of times which ...
0
votes
0answers
38 views

Apache process 100% with IPV4 TCP 10u

Today i got strange http ussage. All apache processes woks ok but after some time i found few processes stocked at 100% and they are like that long time. After i checked that process id at webmin ...
0
votes
2answers
481 views

High Load, low CPU, Memory and Disk IO - Highend Server

This issue has been bugging me for the past several days having spent over 40 hours investigating this issue intensively. Effectively we run asterisk 1.4.42 which I understand is old, however is the ...
3
votes
1answer
116 views

Is there a backend-aware load balancer for Rails/Passenger?

We have 3 Ruby on Rails applications (A, B and C) installed on a number of application servers. Our front end is HAProxy, backend is Apache + Phusion Passenger. Originally we had all 3 Rails apps ...
1
vote
4answers
323 views

Server Load very high despite CPU usage being low

When I run the top command I get this top - 23:20:50 up 1:25, 1 user, load average: 11.02, 11.20, 10.41 Tasks: 262 total, 3 running, 258 sleeping, 1 stopped, 0 zombie Cpu(s): 75.6%us, ...
1
vote
0answers
91 views

high linux server load

I have a problem with high server load (load average from 10 to 100+) when there is a lot of web traffic. There are also noticable delays when reading/writing files. Machine is a Apache web server. ...
2
votes
2answers
2k views

WHM/CPANEL - High cpu and memory usage from Analog Stats

A single process is taking 100% of the cpu and 70% of the memory and starts every day on different account; /usr/local/cpanel/3rdparty/bin/analog +CIMAGEDIR /images/ +CDOMAINSFILE ...
2
votes
1answer
537 views

Ubuntu 12.04 KVM host high load with idle ubuntu 12.04 guests

I am stuck with this one. Clean install Ubuntu 12.04 server 64bit on two physical machines. Machines are identical except one has 8GB RAM and the problem machine has 32GB RAM, both machines were ...
0
votes
0answers
155 views

cassandra compaction high load

Since last night I am seeing CPU load spikes on our cassandra boxes(Occasionally load goes up to 20, its a Amazon EC2 c1.xlarge with 300 iops EBS). After digging around a little I believe its related ...
1
vote
2answers
238 views

Determine php script causing MySQL huge load

I'm running a young non-profit organization aiming at providing free and low cost web hosting. Since few days, our server load is around 1.5, sometimes raising to 7. top shows me that MySQL is the ...
0
votes
1answer
83 views

Is it worth to set up a different network interface for connections to MySQL?

I have a high load website served by two servers: web server with nginx and php, and database server with mysql. Web server serves all the static content and connects to MySQL and outside world ...
1
vote
1answer
106 views

How to graph the web server load by using the nginx logs with response time?

I want to analyse if certain type of requests do have an important impact on the server. My backend service is behind nginx which logs all requests including the time needed to get the response. Now ...
0
votes
2answers
400 views

Prevent heavy server query to overload Apache/Mysql

I have some questions about understanding high server load and implement some type of load balancing in a common scenario with solutions like Apache and MySQL and PHP 5. I am benninger in the matter ...
4
votes
4answers
2k views

High Load Average with modest CPU Utilization and almost no IO

The usual explanation for high load average with little cpu use under linux is too much IO (or more properly uninterruptable sleep). I have a service running on a cluster of 2-core VMs that exhibit ...
1
vote
0answers
303 views

Linux NIC bonding failure; strange CPU load

Note: An update as been added below I'm having a very strange issue with a Linux server (Debian 6.0.6) using 802.3ad NIC bonding. Occasionally all of the NICs in the bond get marked as down and the ...
0
votes
1answer
2k views

GlusterFs - high load 90-107% CPU

I try and try and try to performance and fix problem with gluster, i try all. I served on gluster webpages, php files, images etc. I have problem after update from 3.3.0 to 3.3.1. I try 3.4 when i ...
0
votes
2answers
99 views

My server crashes and I've checked everything: what's left?

I have an m1.medium Amazon EC2 instance running Apache and hosting a Wordpress blog. In turn, Wordpress works with a MySQL database over on a different EC2 instance. The Wordpress site has W3 Total ...
0
votes
1answer
221 views

Apache compromised now high cpu usage? [duplicate]

Over the weekend one of the virtual servers that I host was compromised and since then I've had all sorts of problems popping up. The latest one is Apache taking 100% cpu usage as soon as it's ...
2
votes
1answer
2k views

High server load - [jbd2/md1-8] using 99.99% IO

I've been having spike in load over the last week. This usually occurs once or twice a day. I've managed to identify from iotop that [jbd2/md1-8] is using 99.99 % IO. During the high load times there ...
-1
votes
1answer
152 views

How to track traffic tidal wave on Amazon EC2 instance? [duplicate]

I have an Amazon EC2 web server that talks to a second database server instance... the web site is for a TV show, so the site tends to run a normal load of traffic until it's mentioned on the air and ...
0
votes
1answer
42 views

How do we configure Lustre to block client requests when under load, rather than failing?

We are using Lustre in a cluster with approximately 200TB of storage, 12 Object Storage Targets (that connect to a DDN storage system using QDR Infiniband), and roughly 160 quad and 8-core compute ...
1
vote
4answers
395 views

Linux high load with ImageMagick convert utility and server freezes (blktrack output attached)

I'm using ImageMagick to convert a JPG to TIF file, and I'm using the limit options for Imagemagick as below: /usr/bin/convert -limit memory 256 -limit map 512 subjectfile.jpg -colorspace Gray -depth ...
0
votes
1answer
212 views

CentOS server high load and server freezes

My server seems to get sudden high loads within second and when I run dmesg, following logs appear: INFO: task auditd:2185 blocked for more than 120 seconds. "echo 0 > ...
0
votes
0answers
49 views

High load cause? [duplicate]

Possible Duplicate: what is my server high load cause (4 cores and 8 thread cpu) What is my high load cause? CPU,RAM or IO? 4 Core, 8 thread cpu top - 22:27:07 up 149 days, 5:26, 1 ...
0
votes
0answers
164 views

High Load Average and High CPU usage make the CRM Slow

top: 12:49:59 up 49 days, 14:07, 3 users, load average: 7.55, 7.24, 7.37 Tasks: 300 total, 25 running, 263 sleeping, 0 stopped, 12 zombie Cpu(s): 91.9%us, 8.1%sy, 0.0%ni, 0.0%id, 0.0%wa, ...
9
votes
3answers
590 views

Load avg weirdness on Linux Ubuntu

In past few days I've been trying to understand the weirdness which is happening in our infrastructure but I haven't been able to figure it our so I'm turning to you guys to give me some hints. I've ...
-3
votes
4answers
416 views

what is my server high load cause (4 cores and 8 thread cpu)

What should i do if I want to prevent this high load. My website becomes slow when load is higher than 8. Please see iotop result too. top - 20:23:10 up 127 days, 3:22, 1 user, load average: ...
1
vote
2answers
868 views

How to choose a correct value for open_file_cache in nginx configuration?

I have a website with load of about 60 000 requests per minute served by nginx. Recently, I have enabled the open file cache and saw a dramatic improvement in performance. But in the evenenings, when ...
2
votes
3answers
652 views

Nginx and php-fpm fails with high load: “Possible SYN flooding on port 80” and “104: Connection reset by peer”

I have quite heavy loaded web server using: Ubuntu server nginx php-fpm + apc Yesterday something wierd happened with my server. It crashed and stopped responding and after I rebooted it, web pages ...
4
votes
2answers
229 views

High Server Load cannot figure out why [closed]

My server is currently running CentOS 5.2, with WHM 11.34. Currently, we're at 6.43 to 12 for a load average. The sites that we're hosting are taking a lot time to respond and resolve. top doesn't ...
1
vote
1answer
576 views

HA Proxy - roundrobin vs leastconn

Are there any suggestion on when should I use roundrobin & when should I use leastconn? I am using roundrobin currently and observed the loading of my back-end servesr are not evenly ...
0
votes
0answers
225 views

High Load average in Linux kernel 2.6.26 even cpu time is available?

I have 2 machine. both the machine I have kernal 2.6.26. Both machines are getting more then 300 load averages even cpu idle time is 80%-90%. In the wa column also very less. The followings are top ...