[CALL FOR TESTERS] Accounting implemented as separate kernel thread

Wojciech A. Koszek dunstan at freebsd.czest.pl
Tue Dec 27 08:49:44 PST 2005


There were some problems in our current accounting implementation.
These were reported by Richard Todd:


I've decided to solve this problem and came up with implementation of
John Baldwin's idea: separate kernel thread responsible for acconting.
It is created when needed and destroyed when accounting is being
disabled. Also handles resume/suspend states. I did some tests and
couldn't get a panic.

The patch is here:

It would be probably useful to replace current static SYSCTL_INTs and
replace them with SYSCTL_PROC of CTLTYPE_INT type in order to call
wakeup() just after configuration value change.

Comments are (as always) welcome!
* Wojciech A. Koszek && dunstan at FreeBSD.czest.pl

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