Kernel

http://www.linuxjournal.com/article/6931 Kernel Korner - I/O Schedulers

http://www.linuxjournal.com/article/8172 LinuxJournal ‘2005 article about how to bridge 2 network interfaces in linux

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

http://lists.xensource.com/archives/html/xen-devel/2009-03/msg00530.html note from redhat engineer explaining what version of xen is used in RHEL 5.x (this is not that simple, hence this post)

http://lwn.net/Articles/104185/ whenever your are in discussion about OOM, make sure you mention this :-)

http://www.fishpool.org/post/2008/03/31/Optimizing-Linux-I/O-on-hardware-RAID explains use linux IO scheulers with presence of smart RAID controllers.

https://bugzilla.redhat.com/show_bug.cgi?id=484667 issue with dropped packets on newer broadcomm ethernet cards, found in dell 1950III servers

http://lwn.net/Articles/321702/ Message to Kernel Mailing List about differences between XEN and KVM .

http://duartes.org/gustavo/blog/post/memory-translation-and-segmentation very goom sum-up about memory mechanism in modern x86 machines. For more elabored and detailed info