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Questions tagged [high-load]

All aspects of high-loaded systems development and maintenance.

All aspects of high-loaded systems development and maintenance: design, algorithms, architecture, technologies, development, testing, databases, storage, support, hardware, hosting, management.

222 questions
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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 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. auditd D…
Imran Imtiaz
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High load cause?

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 user, load average: 17.43, 13.34, 9.65 Tasks: 1018 total, 1…
Mehdi Azizi
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How to choose NoSQL database engine?

We have a database with following specs: 30k records, 7mb in size 20 inserts/second 1000 updates/second 1000 range selects/second, by secondary index, approx 10 rows each needs at least one secondary index needs some mechanism to expire keys if…
Poma
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What is the standard way of providing a servery busy lockout page when server is overloaded?

We have the need to lockout users from our service when its under load to avoid degraded user experience. We have implemented a very rough and ready version of this by detecting errors or timeouts on ajax requests and displaying a popup saying we…
Tristan
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How to know which site/script is taking all CPU and RAM in Plesk/apache

I have more than 100+ domains on a CentOS Plesk server. Suddenly the load on the server goes very high and eats up all resources. eating up all RAM, all CPU , due to which i cannot even login to server to check that what is happening to server. I…
Farhan
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On Multiple Processors sytem, System load is high while most of CPUS are idle

See the following output of "top". Any idea? top - 17:33:25 up 7 days, 28 min, 4 users, load average: 12.04, 8.35, 6.30 Tasks: 477 total, 2 running, 474 sleeping, 0 stopped, 1 zombie Cpu0 : 14.2%us, 11.9%sy, 0.0%ni, 64.6%id, 0.0%wa, …
George
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How to detect if a server is overloaded on Linux

I would like to develop a "simple" script which should be automatically detect (every 5 minutes let say) if a server (in this case the same host on which it is running) is overloaded or not. The server in question hosts a Web server (Apache) and a…
pAkY88
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Should I add more RAM or CPU on my server? How do I figure this?

I host a PHP/MySQL application with Smarty caching on my server. It routinely gets short traffic spikes via tweets to thousands of followers. The traffic spike goes up to 6 hits /sec for upto 20-30 mins. And later reduces to less than a hit a…
Man_Pat
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mysql and phpthumb killing the server

I installed GD and ImageMagick the other day and since that day phpthumb() which it is installed on my wordpress killing the processor. I've transfered my website from an old server to this new one using resync 2 days ago, and I noticed that the…
Mohammad Fadel
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High traffic, slow response: where is the bottleneck?

I have a site which is receiving relatively high traffic of around 250.000 pageviews a day. The PHP code is usually executing in under 0.02 seconds, but the actual response time can go up during peak times to several seconds (sometimes 10+ seconds).…
Aron
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HIGH CPU on my Apache server (Windows)

I have a big problem, My Apache server use 50% of CPU when I have many visits, my website have only 30 000 pages viewed/day and many static content, but the server load is between 10% and 50%, I am on Windows. My current MPM settings are :
Kamiil
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Advantages of MySQL Server Enterprise

We build for a customer a social network site, where we will have on beginning 1 Master and 2 Slave MySQL Server. I'm not sure if we need to go with the Enterprise or use the GA Version. The only advantage for me would be the MySQL Enterprise…
Nenad
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Squeeze Server freezing under heavy cpu / disk / network load

i would like to ask for help since i am feeling a bit clueless here. I recently bought a low end dedicated machine that was supposed to host some services: squid, proftpd and rtorrent. I installed debian lenny and immediately updated to squeeze…
D4rKr0W
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erratic response times with Apache 2.0.52 on redhat 4

Under load, we've noticed response times from Apache vary greatly for the same 7k image. It can range anywhere from .01 seconds to 25 seconds or greater. Unfortunately, due to corporate policy constraints we are pretty much stuck on Apache 2.0.52.…
user59113
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How multiple load balancers work

Assume we face x requests per seconds, where x is magic number of requests which single load balancer cannot handle. So we have to use multiple load balancers to handle all requests, yes? But how? I need to load balance the load balancers farm? Poor…
Szyszka947
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