RE: [PATCH v9] mempool: test performance with larger bursts

["Morten Brørup" <mb@smartsharesystems.com>]

> From: Morten Brørup [mailto:mb@smartsharesystems.com]
> Sent: Tuesday, 17 September 2024 10.10
> 
> Bursts of up to 64, 128 and 256 packets are not uncommon, so increase
> the
> maximum tested get and put burst sizes from 32 to 256.
> For convenience, also test get and put burst sizes of
> RTE_MEMPOOL_CACHE_MAX_SIZE.
> 
> Some applications keep more than 512 objects, so increase the maximum
> number of kept objects from 512 to 32768, still in jumps of factor
> four.
> This exceeds the typical mempool cache size of 512 objects, so the test
> also exercises the mempool driver.
> 
> Reduced the duration of each iteration from 5 seconds to 1 second.
> 
> Increased the precision of rate_persec calculation by timing the actual
> duration of the test, instead of assuming it took exactly 1 second.
> 
> Added cache guard to per-lcore stats structure.
> 
> Signed-off-by: Morten Brørup <mb@smartsharesystems.com>
> Acked-by: Chengwen Feng <fengchengwen@huawei.com>
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
> ---

Duration of mempool_perf_autotest on a 4 core x86_64 virtual machine: 1 hour 15 minutes

Tested-by: Morten Brørup <mb@smartsharesystems.com>