Re: [PATCH] mm: terminate shrink_slab loop if signal is pending

Suren Baghdasaryan
2017-12-08T04:37:56Z

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>
>
> According to my traces this 43ms could drop to the average of 11ms and
> worst case 25ms if throttle_direct_reclaim would return true when
> fatal signal is pending but I would like to hear your opinion about
> throttle_direct_reclaim logic.
>

Digging some more into this I realize my last statement might be incorrect.
Throttling in this situation might not help with the signal handling delay
because of the logic in __alloc_pages_slowpath. I'll have to experiment
with this first, please disregard that last statement for now.

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