ols2006: OLS2007: Proceedings of the 2007 Linux SymposiumMany, MANY interesting articles. I've covered so far only a small part of them:
Asynchronous system calls
Evaluating effects of cache memory compression on embedded systems
Frysk
Keeping Kernel Performance from Regressions
Linux Kernel Debugging on Google-sized clusters
Ltrace internals
The 7 dwarves - debugging information beyond gdb