In UNIX family Operating Systems, the load average represents the average system load over a period of time.

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ATOP: vmcom / vmlim -> SWP is red

in ATOP I'm getting a red alert like this: vmcom 76.3G | vmlim 49.8G This is a value that is attached to the "SWP" (so "SWAP" is meant?)-line. What does this mean and what can I do against it?
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25 views

Server crashes with incredibly high load

I got a problem with a KVM-virtualized server (Proxmox-based), running on Debian 7.8 and PLESK. Sometimes there are loads > 200 (sic!) and I just do not get the reason why. The monitoring shows the ...
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7answers
3k views

High CPU utilization but low load average

We are running into a strange behavior where we see high CPU utilization but quite low load average. The behavior is best illustrated by the following graphs from our monitoring system. At about ...
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0answers
24 views

determine if threads on a cpu are blocked? What are the causes of thread blocks?

The load-average reported by uptime command also displayed in top provides the the average run-queue length over time (1, 5 and 15 minutes) The run-queue length is the sum of the number of threads ...
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2answers
86 views

Low CPU and Memory utilization. Does that mean server is healthy?

On a fairly busy RHEL6 server I keep noticing on average following indications CPU Usage : 2%. CPU Load AVG: 0.4,0.2,0.1 Memory Usage: 1.3 out of 16 GB This is the CPU this server has Intel(R) ...
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2answers
41 views

Medium CPU usage but high load

I know this has been asked multiple times, and generally wa causes high load even if CPU isn't the culprit. However, in our case, wa is ~0 and CPU is at ~45% on a 4 core, 8 thread dedicated server. ...
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0answers
72 views

what is cause of high system CPU usage(%sy)

I am trying to find cause of high load , I am having high load every 30 minutes in Ubuntu 12.04 server system , I have Zpanel Installed on it and It have some web applications running Here in Image ...
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0answers
74 views

apache cpu and memory usage in code 302 403 404 500

I have a site, E5 2620v2 vCPUs + 16GB RAM, normally my load average near 0.6-1.2, only few times it will more than 2.0 during one day. But one day, I found somebody crawl my site's content make a ...
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1answer
68 views

Load average increasing along with firewall throughput

I've just pushed a large change to my backend code and I've noticed a massive increase in the load average in the few hours since the push. I looked at Munin for what the problem might be and I ...
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5answers
453 views

High load due to I/O wait in Ubuntu 12.04 on EC2 instance

I am using Ubuntu server 12.04 , having trouble finding cause of load, I have seen change in response time of server from past week after reading Linux Troubleshooting, Part I: High Load It seems ...
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1answer
190 views

System not being able to handle soft interrupts but having idle time?

I have a constant 5% and more CPU time spent in handling soft interrupts. Doe to that, the ksoftirqd is running almost constantly, but is using a very small amount of CPU (less than 1%). However, ...
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2answers
2k views

High Apache busy workers and high load average

I've been experiencing a spike in load average on a web server I manage on almost a daily basis now, here are the server specs: 6 x 2.4 GHz dedicated CPU 3GB RAM This is a VPS of which is running ...
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1answer
300 views

Unusual load average for an idle workstation

I have a new workstation with an unusual high load average. The machine specs are: Xeon CPUs 256 GB of RAM 4 x 512 GB SSD connected to a LSI2108 RAID controller (in raid 5) I have installed ...
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3answers
514 views

Server problems, running out of RAM, really high load average

I desperately need help in figuring out how to troubleshoot this problem I'm having. I run a fairly mission critical web server (Debian 7.5, 512MB RAM, 512MB swap, Apache, MySQL). It runs a couple ...
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1answer
378 views

Nagios basic: understanding check_load graph

My db server (one cpu VM) is monitored by Nagios. I've no experience with Nagios and I've trouble understanding this graph: what is the unit on vertical axis? and the averages? what is "m"?
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1answer
486 views

high load average and cpu usage

I am experiencing high CPU usage here is the stats i got from server, the consumption after every restart in 15 minutes go upto 100%, what could go wrong? I have a site in laravel installed on the ...
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0answers
311 views

Random server load spikes, number of tasks doubles, CPU/Memory consistent

We run a vBulletin forum with 6,000 visitors per day on an SSD VPS with 5GB RAM and 24 CPU Cores. On a typical day we see 30-50 concurrent users at any given moment. On busy mornings, it'll go up to ...
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0answers
90 views

Load average metric for RDS in Cloudwatch

Has anyone succeeded in getting load average data for an RDS instance into Cloudwatch? If so, how did you do it?
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1answer
144 views

Lots of connections to loopback, could be slowing us down

I'm trying to debug a sudden increase in our load average. I looked at this page to see if we were being DDoS'ed but the standout IP address was the loopback address: $ netstat -ntu | awk '{print ...
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1answer
2k views

CPU 100% idle but still showing load average

I have a Blade Server with CentOS 6.4. On idle state it shows a constant load average of more than 1. However I prepared another machine having the same hardware and CentOS version and its load ...
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1answer
76 views

Very high load during pvmove in domU

I had a pretty bad time this evening. I had to move LVM2 LVs from one PV to another (source PV backed by NFS stored vdisk, target PV backed by an iscsi LUN). Moving small LVs of ths VG (few gigabits) ...
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2answers
267 views

WordPress on a CentsOS 6.4 with high CPU loads [closed]

I'm helping a friend out, he's running a CentosOS 6.4 server, with Apache/2.2.24 (Unix) httpd server. His site is running on WordPress 3.81 (latest version) and he's having 30,000 unique page views ...
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1answer
75 views

Server load avg. hitting 16-20, but all resources under 90% usage?

As you can see in the image shared below, the server load peaked to almost 20 but the CPU, RAM, DISK IO and Network I/O remained well under their full capacity. My question is: 1). What caused the ...
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2answers
530 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 ...
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2answers
1k views

High load with low CPU usage and low IO usage on Solaris with ZFS and MySQL

I have a Solaris 10 x86_64 system running MySQL 5.5. Under heavy usage times, we're getting very slow responses from the database: slow queries running into minutes that normally return in sub-second ...
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2answers
305 views

Munin's load plugin does not appear

I just did a fresh install of Munin 2.0.6-4 on a Debian 7.1 server from the debian repositories. The "load" plugin appears as loaded: # munin-node-configure | grep load load | ...
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2answers
912 views

High Iowait + High load average on a monitoring server

I've a nagios server which was perfectly working up to a few days ago. I've stopped it and restarted it to increase its RAM, and since then, iowait increased dramatically on the server (more than 20%, ...
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0answers
183 views

LAMP: too many connections from localhost

I'm running a ISPConfig LAMP server with Apache2 and php5-fpm. I keep wondering, why do I get to see up to 300 connection from 127.0.0.1? I just don't get it. I find out those connections by ...
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2answers
124 views

server load extremely high trying to diagnose [closed]

The server load is extremely high. I'm trying to diagnose what's going on. Screenshot attached. edit: OS is CentOS 5. Not running anything like plesk or cpanel, etc.. The raid10 has 1 failed ...
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2answers
592 views

What does load average statement mean in sendmail log? Current LA? Or Threshold?

In sendmail logs, I'm seeing events like: Mar 20 08:36:05 foo sendmail_daemon_foo[1234]: rejecting connections on daemon MTA: load average: 50 Does this mean that the connection was rejected ...
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1answer
5k views

finding out what causes high sendmail load average

I'm investigating a server which I have not set up, for which there is no technician to answer questions. The problem is that the load average is high, which makes the server unable to send emails! ...
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2answers
329 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 ...
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2answers
402 views

0% CPU in top for all processes, but load average > 1

On two different servers (with Ubuntu 12.04LTS AMD64) I have seen the following behaviour: op - 10:50:05 up 305 days, 21:17, 1 user, load average: 1.94, 2.52, 2.97 Tasks: 141 total, 2 running, ...
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1answer
409 views

monitor load average every 1 or 5 seconds and do some actions if it's higher than ex. 5

How it can be done without writing additional daemon? P.S. I can't use cron because I need lesser time intervals. P.P.S. Debian 6 x64
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0answers
574 views

High load average, low CPU and IO (Centos 5.7)

A Drupal 7 site with CiviCRM, after running smoothly for a year on a 1&1 VPS suddenly became unresponsive. Now pages eventually load, but can take more than a minute. Looking at resource use in ...
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1answer
335 views

Unknown modprobe causing high load average

For about the last 6 months, and for about a year before that (with a 6 month hiatus), one of my servers has had a consistently high load average: 13:37:34 up 192 days, 5:44, 2 users, load ...
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4answers
6k views

What is causing the unusual high load average?

I noticed on Tuesday night of last week, the load average went up sharply and it seemed abnormal since the traffic is small. Usually, the numbers usually average around .40 or lower and my server ...
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1answer
326 views

Sudden load average increase with same number of users and having changed nothing

My website was running fine until yesterday with load averages under 1. Suddenly, yesterday it started behaving badly. I was getting load averages to up to 50. I haven't changed anything in the ...
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3answers
5k views

High load average, low cpu

My server has slowed down, and I don't know why. Print from top: top - 14:32:50 up 639 days, 6:30, 1 user, load average: 67.93, 70.63, 79.85 Tasks: 245 total, 1 running, 244 sleeping, 0 ...
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3answers
10k views

Explain load averages on Solaris 10

I understand load averages on Linux, but am a bit mystified by the load averages on a legacy Solaris 10 machine my app runs on. The load averages seem impossibly high. Here's the output. [netcool1 ...
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2answers
265 views

High load average on I/O wait

My server is experiencing very high load average spikes (>10, sometimes even >20) every few minutes. top shows that CPU isn't in usage but is waiting for I/O operations: top - 17:42:28 up 8 days, ...
3
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1answer
293 views

Apparently Unexplained Load Average

I have been experiencing very strange server load, but for no obvious reason. Could anyone explain the cause/how to debug further? One Minute - 22.9 Five Minutes - 17.98 Fifteen Minutes - ...
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1answer
280 views

solr is killing my server by taking a lot of resources

I have Ubuntu 9.10 server with 12G Ram/Quad Core/HD 80GB RAID. and i have installed solr lucidworks-enterprise-installer-1.7 on it to index a small database (about 20k articles). once our editors ...
0
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1answer
113 views

Server load average soaring+network usage 5X up on production server, need quick help

My main app server is experiencing unprecedented peak in network usage and load average. The server is on Ec2/Scalr running php+memcache the graphs shows this kind of load has never happened before ...
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1answer
422 views

mod_wsgi, apache2, and load average

I've got a server running several cherrypy apps on apache2 under mod_wsgi. We're seeing constantly fluctuating load average on a box that is not serving many requests. As far as I can tell, the box is ...
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2answers
263 views

Load average at 1, even though I've stopped all services!

I have a virtual server running Debian 5 where any action is very slow (like password verification when logging in via SSH or doing su). I checked the load average, which is hovering around 1-2. Then ...
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3answers
4k views

High load average (over 2.0) on an idle machine

I've this server which is basically idle, and yet has a high load average. Hardware : 4 processor PowerPC Over 4GB of free RAM Top says CPUs are 99.9% idle Virtually no disk I/O Debian Squeeze, ...
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1answer
387 views

Load average problem (mostly cosmetic)

This isn't a real problem, but I guess it can point to something more serious - I recently upgraded to 2.6.36 linux kernel, and Load Average doesn't go under 1.0 - no matter how many tasks I have, no ...
3
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1answer
8k views

Question on SendMail daemon actions when load average is too high

My sendmail server started rejecting connections because load average was too high (due to a spam issue that has since been resolved). Error was: sendmail[13400]: rejecting connections on daemon ...
37
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5answers
17k views

How to understand the memory usage and load average in linux server

I am using a linux server which has 128GB of memory and 24 cores. I use top to see how much it is used. Its output is pasted at the end of the post. Here are two questions: (1) I see that each of the ...