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Sleep in Linux Kernel

Source: Internet
Author: User
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Linux Kernel sleep-general Linux technology-Linux programming and kernel information. For details, see the following. A problem occurred during debugging over the past few days. DVBH was not smooth enough to play online, but it was always stuck in one card. Many experiments were conducted, such as tracking the audio and video decoding time.

Finally, a problem was found in the driver for receiving media streams. packet interruption occurs, that is, the interruption is very frequent in a certain period of time, resulting in other tasks during that period-such as decoding-no time to be scheduled, this causes a "card" problem at that time.

Finally, we only forcibly execute "schedule" once after the interrupt processing is complete, so that other tasks have the opportunity to be scheduled (simply call sleep (0.

It seems that proper sleep in the kernel driver is very important.

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