At $WORK we were running a MySQL setup that required an unusually large number of concurrent connections. Most of them were idle. Only a few dozen connections were running queries. The total number of connections was around twelve thousand and was growing slowly. When the total number of connections reached close to 12,200, things started to break. New clients could no longer connect to the database. The error in the MySQL log was: ...
http://blog.beyond-syntax.com/2011/03/diving-into-linux-networking-i/ Overview of how network driver work in linux kernel
http://libgit2.github.com/ normal git library, cab be used to create bindings to git (not libgit.a horror from official gir project )
https://github.com/superjoe30/PyWaveform C utility and Python bindings for generating waveform images out wave files
http://www.ibm.com/developerworks/views/linux/libraryview.jsp?site_id=1&contentarea_by=Linux&sort_by=Date&sort_order=1&start=1&end=3&topic_by=-1&product_by=&type_by=Articles&show_abstract=true&search_by=kernel%20apis, Series of short articles on linux kernel [2.6.27] APIs by Tim Jones
http://vger.kernel.org/~davem/skb.html details about important linux kernel networking subsystem data structure called “skb”
http://lpeer.blogspot.com/2010/04/switching-from-c-to-java.html Great post about challenges that one team inside of Redhat faced when they were challenged with the task of migrating C#/IIS/MS-SQL-based VM management tool into Java. The post is more interested from the project management perspective, than from the technology side.
http://blogs.azulsystems.com/cliff/2009/09/java-vs-c-performance-again.html somewhat useful comparative review
http://lxr.linux.no/+trees linux kernel code cross-reference: you can quickly look up a piece of code,, find out in what version it appeared first, and so on.
http://lwn.net/Articles/362339/#Comments notes from LWN about RPS patch – a way to distribute incoming traffic coming from 1 source (1 NIC, 1 queue, 1 IRQ line) via multiple CPU by hashing tcp headers and distributing by hash across multiple CPU/Cores