Re: [dpdk-dev] [PATCH v4 0/4] fix performance/cache resource issues with 128-byte cache line targets

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

On Fri, Jan 29, 2016 at 01:15:51PM +0530, Jerin Jacob wrote:
> This patchset fixes performance/cache resource issues with 128-byte cache line targets
> found in mbuf and bitmap DPDK libraries
> 
> Currently, we have two DPDK targets(ThunderX and ppc_64) which are based on
> 128-bytes cache line size target.
> 
> This patchset doesn't introduce any performance degradation
> for 64-bytes cache line size targets.
> 
> v1..v2
> - Introduced new cache macro definitions as Suggested by Konstantin
> - Reduced the cache alignment requirement for 128-byte cache targets in
> slow-path data structures to save the memory
> - Verified x86(a 64byte cacheline target) does not have any impact on these changes by
> verifying the md5sum of app/test,app/testpmd, app/testacl binaries with
> or without this patch set
> 
> v2..v3
> 
> revert the cache alignment of rte_ring_debug_stats,
> rte_mempool_debug_stats structures
> 
> v3..v4
> replaced RTE_CACHE_MIN_LINE_SIZE with RTE_CACHE_LINE_MIN_SIZE as suggested by
> olivier.matz@6wind.com
> 
> For clean git am, "config: cleanup existing RTE_CACHE_LINE_SIZE selection scheme"
> patch needs to apply first
> 
> Jerin Jacob (4):
>   eal: Introduce new cache line macro definitions
>   mbuf: fix performance/cache resource issue with 128-byte cache line
>     targets
>   bitmap: optimize for 128-bytes cache line targets
>   cache/slow-path: reduce cache align requirement for 128-byte cache
>     targets
> 

ping for review/merge

>  app/test/test_mbuf.c                                     |  2 +-
>  lib/librte_eal/common/include/rte_memory.h               | 16 ++++++++++++++++
>  .../linuxapp/eal/include/exec-env/rte_kni_common.h       |  4 +++-
>  lib/librte_ether/rte_ethdev.h                            |  4 ++--
>  lib/librte_mbuf/rte_mbuf.h                               |  2 +-
>  lib/librte_sched/rte_bitmap.h                            | 10 +++++-----
>  6 files changed, 28 insertions(+), 10 deletions(-)
> 
> -- 
> 2.1.0
>