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Message-ID: <4804D228.3090406@fe.uni-lj.si> Date: Tue, 15 Apr 2008 18:04:56 +0200 From: Janez Pers <janez.pers@...uni-lj.si> To: linux-kernel@...r.kernel.org Subject: shmat/shmdt penalty Hi all, Is there significant penalty for doing shmat/shmdt to a preexisting/ pre-created shared memory segment 60-200 times a second in multiple processes using a modern (2.6) linux kernel on i386 architecture? Specifically, do I risk: * significant slowdown due to context switching (e.g. more than 10%)? * memory fragmentation (?) * any other resource exhaustion if such code runs for hours? * scorn and laughter by people who read my code? Sorry if this is faq or documented anywhere (I could not find it) - then the pointer/url to the relevant literature will be enough. Regards, Janez. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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