Messages in this thread | | | Date | Mon, 22 Nov 2004 13:25:09 -0600 | From | Ray Bryant <> | Subject | Re: scalability of signal delivery for Posix Threads |
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Robin Holt wrote: > On Mon, Nov 22, 2004 at 09:51:15AM -0600, Ray Bryant wrote: > >>We've encountered a scalability problem with signal delivery. Our >>application >>is attempting to use ITIMER_PROF to deliver one signal per clock tick to >>each >>thread of a ptrheaded (NPTL). These threads are created with CLONE_SIGHAND, >>so that there is a single sighand->siglock for the entire application. > > > Ray, can you provide a simple example application that trips this case?
I'll do that, but it may be after the Thanksgiving holiday when I get it out to the mailing list. It's a minor thing, but the test we are using now is an OpenMP application (written in .c) and I'd propose rewriting it using POSIX threads without OpenMP for a more general audience
-- Best Regards, Ray ----------------------------------------------- Ray Bryant 512-453-9679 (work) 512-507-7807 (cell) raybry@sgi.com raybry@austin.rr.com The box said: "Requires Windows 98 or better", so I installed Linux. ----------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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