Messages in this thread | | | Date | Tue, 15 Apr 2008 18:04:56 +0200 | From | Janez Pers <> | Subject | shmat/shmdt penalty |
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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.
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