[$] Diagnosing workqueues

There are many mechanisms for deferred work in the Linux kernel. One of them,workqueues, has seen increasing use as part ofthe move away from software interrupts. Alison Chaiken gave a talkat SCALEabout how they compare to software interrupts, the new challenges they pose forsystem administrators, and what tools are available tokernel developers wishing to diagnose problems with workqueues as they becomeincreasingly prevalent.