kernel threads invalidating caches
kernel threads invalidating caches
- Subject: kernel threads invalidating caches
- From: alejandro <email@hidden>
- Date: Wed, 20 Aug 2008 15:26:08 +0200
Dear Friends,
I am running very low latency real-time threads (for audio purposes) on
6 cpus and other admin threads on the other 2 cpus, including disk I/O
threads.
When reading audio from disk, the real-time threads get stucked at
random times. I believe that this interaction is because the disk read
command launches a lower-half kernel thread that can run any of the 8
cpus, and the memory movement from disk to RAM invalidates their caches
and breaks their real-time behavior.
Is there any solution? For example, prohibiting the kernel threads to
run on particular cpus or bound them to a cpu?
Thank you,
Alejandro
--
Alejandro Palencia
Open Studio Networks
+34 667 440 770
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