A thread is the smallest entity of execution within a program.

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Virtualized CPU cores vs. threads

We've got a KVM host system on Ubuntu 9.10 with a newer Quad-core Xeon CPU with hyperthreading. As detailed on Intel's product page, the processor has 4 cores but 8 threads. /proc/cpuinfo and htop ...
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3answers
608 views

Mysql Replication - are per-database threads possible?

I manage a MySQL server hosting over 100 databases. We have set up standard master-slave replication, but the SQL Thread tends to break every so often, and requires manual intervention to re-start ...
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2answers
551 views

My linux server “Number of processes created” and “Context switches” are growing incredibly fast

I have a strange behaviour in my server :-/. Is a OpenVZ VPS (I think is OpenVZ, because /proc/user_beancounters exists and df -h returns /dev/simfs drive. Also ifconfig returns venet0). When I do cat ...
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666 views

tomcat6 maxThreads property ignored

Hi in tomcat6 server.xml I have one connector for catalina service. And I set maxThreads=5: <Service name="Catalina"> <Connector port="8090" maxThreads="5" protocol="HTTP/1.1" ...
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1answer
860 views

List of PHP modules that are thread safe

I'd like to try running Apache in a threaded MPM with mod_php. Does anyone have a list of PHP modules that are thread safe so I can tell if its going to be safe to do or not?