Re: [PATCH 2.6.11-rc4-mm1] connector: Add a fork connector

Guillaume wrote:

  I also run the lmbench and results are send in response to another
thread "A common layer for Accounting packages". When fork connector is
turned off the overhead is negligible. 

Good.

If I read this code right:

+static inline void fork_connector(pid_t parent, pid_t child)
+{
+	static DEFINE_SPINLOCK(cn_fork_lock);
+	static __u32 seq;   /* used to test if message is lost */
+
+	if (cn_fork_enable) {

then the code executed if the fork connector is off is a call to an
inline function that tests an integer, finds it zero, and returns.

This is sufficiently little code that I for one would hardly
even need lmbench to be comfortable that fork() wasn't impacted
seriously, in the case that the fork connector is disabled.

-- 
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                  Programmer, Linux Scalability
                  Paul Jackson [off-list ref] 1.650.933.1373, 1.925.600.0401