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Altera_Forum's avatar
Altera_Forum
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21 years ago

Linux Response time

I try to evaluate context-switch response time.

I use 2 threads and 2 mutexes.

Thread A waits for mutex A and releases mutex B, thread B releases mutex A and waits for mutex B.

It gives me the following (in microseconds)

27 µs for µC/OS-II on NIOSII 'fast' at 50 MHz.

430 µs for Linux on NIOSII (same configuration).

[As a reference, 29 µs for VxWorks on a 133MHz AMD5x86]

Is Linux really so bad (16 times) ?

Is there something faster than pthread_() ?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    Hi Bruno,

    Just to let you know, we are currently doing some uClinux / Nios II benchmarking and hope to have something out next week. We will post the results to the forum when they are ready.

    Best regards,

    Robert

    Microtronix