id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
4512	EventLog does not play well with forkProcess	adept	simonmar	"I am trying to see an eventlog of process that daemonizes itself via forkProcess. 

Unfortunately, as parent process dies, he writes out his eventlog (or at least a header part, I haven't checked exactly), and eventlog of the child process is then appended to the same file.

As a result, neither ghc-events nor threadscope is able to read the eventlog file.

I've modified the program so that it would not fork, and generated ""good"" eventlog. I'm attaching it and ""bad"" eventlog as well so you can see the difference by yourself.

Perhaps ""+RTS -ls"" could write output to filename that includes the PID of the process, like ""program.$PID.eventlog""?"	bug	closed	high	7.0.2	Runtime System	7.0.1	fixed			Unknown/Multiple	Unknown/Multiple	Incorrect result at runtime