> Von: Oleg Nesterov > Datum: Wed, 12 Oct 2005 21:33:46 +0400 > > Michael Kerrisk wrote: > > > > Following up (belatedly) from my earlier message, I took Daniel > > Jacobowitz's suggestion to investigate the result from booting > > with "profile=2". When running my program (shwon below) on > > 2.6.14-rc4 to create 100 threads, and sending a core dump signal, > > the program takes 90 seconds to terminate, and readprofile shows > > the following: > > I think the coredumping code in __group_complete_signal() is bogus > and what happens is: [...] > TIF_SIGPENDING is not cleared, so get_signal_to_deliver() will be > called again on return to userspace. When all threads will eat their > ->time_slice, P will return from yield() and kill all threads. Thanks for investiagting this further. > Could you try this patch (added to mm tree): > http://marc.theaimsgroup.com/?l=linux-kernel&m=112887453531139 > ? It does not solve the whole problem, but may help. > > Please report the result, if possible. Thanks. I've applied it to 2.6.14-rc4: this patch does fix the specific behaviour that my program demonstrates. What remains to be solved? Cheers, Michael -- 10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail +++ GMX - die erste Adresse für Mail, Message, More +++