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Re: malloc, thread and alignment
On Thu, Mar 26, 2015 at 02:13:19PM +0000, Emmanuel Dreyfus wrote:
> jemmaloc(3) says:
> Allocations are packed tightly together, which can be an issue for multi-
> threaded applications. If you need to assure that allocations do not
> suffer from cache line sharing, round your allocation requests up to the
> nearest multiple of the cache line size.
> Do we are example of how it should be done? I do not know how to discover
> cache line size, neither do I know how I can specify alignment based on it.
I don't think we export the cache line size currently. You can specify
the alignment with posix_memalign.
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