Thank you all.

On Thu, Nov 4, 2021 at 10:19 PM Thomas Monjalon <thomas@monjalon.net> wrote:

> 04/11/2021 17:39, Medvedkin, Vladimir:
> > >> 01/11/2021 11:55, Syam Prasad N Pearson:
> > >>> /** Number of items per bucket. */
> > >>> *#define RTE_HASH_BUCKET_ENTRIES 8*
> > >>>
> > >>> defined inside:
> > >>> dpdk-20.11.3/dpdk-stable-20.11.3/lib/librte_hash /rte_cuckoo_hash.h
> > >>>
> > >>> Why does the library take this value as *8*, is there any particular
> > >>> reason for this? what if it is 16,32... etc.
> >
> > Yes, RTE_HASH_BUCKET_ENTRIES can be any power of 2.
> > The reason for choosing 8 is a tradeoff between performance and memory.
> > When it is equal to 8, the sizeof(struct rte_hash_bucket) equal to
> > RTE_CACHE_LINE_SIZE, thus, there are no gaps in memory between the hash
> > buckets due to their alignment.
>
> That's a good comment to add in the code.
>
>
>

-- 
Regards,
Syam Pearson
Syam Pearson
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