From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets
Date: Fri, 11 Dec 2015 19:26:33 +0530 [thread overview]
Message-ID: <20151211135631.GA23152@localhost.localdomain> (raw)
In-Reply-To: <2601191342CEEE43887BDE71AB97725836AD2A79@irsmsx105.ger.corp.intel.com>
On Fri, Dec 11, 2015 at 12:55:57PM +0000, Ananyev, Konstantin wrote:
> Hi Jerin,
>
> > -----Original Message-----
> > From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> > Sent: Thursday, December 10, 2015 4:36 PM
> > To: dev@dpdk.org
> > Cc: thomas.monjalon@6wind.com; Ananyev, Konstantin; viktorin@rehivetech.com; jianbo.liu@linaro.org; Jerin Jacob
> > Subject: [dpdk-dev] [PATCH v2 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets
> >
> > slow-path data structures need not be 128-byte cache aligned.
> > Reduce the alignment to 64-byte to save the memory.
> >
> > No behavior change for 64-byte cache aligned systems as minimum
> > cache line size as 64.
> >
> > Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> > ---
> > lib/librte_ether/rte_ethdev.h | 4 ++--
> > lib/librte_mempool/rte_mempool.h | 2 +-
> > lib/librte_ring/rte_ring.h | 2 +-
> > 3 files changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
> > index bada8ad..4dbf73b 100644
> > --- a/lib/librte_ether/rte_ethdev.h
> > +++ b/lib/librte_ether/rte_ethdev.h
> > @@ -863,7 +863,7 @@ struct rte_eth_rxq_info {
> > struct rte_eth_rxconf conf; /**< queue config parameters. */
> > uint8_t scattered_rx; /**< scattered packets RX supported. */
> > uint16_t nb_desc; /**< configured number of RXDs. */
> > -} __rte_cache_aligned;
> > +} __rte_cache_min_aligned;
> >
> > /**
> > * Ethernet device TX queue information structure.
> > @@ -872,7 +872,7 @@ struct rte_eth_rxq_info {
> > struct rte_eth_txq_info {
> > struct rte_eth_txconf conf; /**< queue config parameters. */
> > uint16_t nb_desc; /**< configured number of TXDs. */
> > -} __rte_cache_aligned;
> > +} __rte_cache_min_aligned;
> >
> > /** Maximum name length for extended statistics counters */
> > #define RTE_ETH_XSTATS_NAME_SIZE 64
> > diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
> > index 6e2390a..8e5d10c 100644
> > --- a/lib/librte_mempool/rte_mempool.h
> > +++ b/lib/librte_mempool/rte_mempool.h
> > @@ -92,7 +92,7 @@ struct rte_mempool_debug_stats {
> > uint64_t get_success_objs; /**< Objects successfully allocated. */
> > uint64_t get_fail_bulk; /**< Failed allocation number. */
> > uint64_t get_fail_objs; /**< Objects that failed to be allocated. */
> > -} __rte_cache_aligned;
> > +} __rte_cache_min_aligned;
> > #endif
> >
> > #if RTE_MEMPOOL_CACHE_MAX_SIZE > 0
> > diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
> > index de036ce..33166aa 100644
> > --- a/lib/librte_ring/rte_ring.h
> > +++ b/lib/librte_ring/rte_ring.h
> > @@ -123,7 +123,7 @@ struct rte_ring_debug_stats {
> > uint64_t deq_success_objs; /**< Objects successfully dequeued. */
> > uint64_t deq_fail_bulk; /**< Failed dequeues number. */
> > uint64_t deq_fail_objs; /**< Objects that failed to be dequeued. */
> > -} __rte_cache_aligned;
> > +} __rte_cache_min_aligned;
> > #endif
>
> I think we better keep both struct rte_ring_debug_stats and rte_mempool_debug_stats
> as __rte_cache_aligned.
> Both are on a per core basis and can be used at run-time
> (when RTE_LIBRTE_RING_DEBUG/RTE_LIBRTE_MEMPOOL_DEBUG=y),
> and not supposed to be shared by different cores.
> All other things in the series look good to me.
OK, I will fix the alignment of rte_ring_debug_stats and
rte_mempool_debug_stats and send the next revision with your ACK.
Jerin
> BTW, by some reason I can't find that series in the patchworks.
> Konstantin
>
>
> >
> > #define RTE_RING_NAMESIZE 32 /**< The maximum length of a ring name. */
> > --
> > 2.1.0
>
next prev parent reply other threads:[~2015-12-11 13:56 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-06 15:59 [dpdk-dev] [PATCH 0/2] fix performance/cache resource issues with 128-byte cache line targets Jerin Jacob
2015-12-06 15:59 ` [dpdk-dev] [PATCH 1/2] mbuf: fix performance/cache resource issue " Jerin Jacob
2015-12-07 15:21 ` Ananyev, Konstantin
2015-12-08 12:45 ` Jerin Jacob
2015-12-08 16:07 ` Ananyev, Konstantin
2015-12-08 17:49 ` Jerin Jacob
2015-12-09 13:44 ` Ananyev, Konstantin
2015-12-09 14:49 ` Jerin Jacob
2015-12-06 15:59 ` [dpdk-dev] [PATCH 2/2] bitmap: optimize for 128-bytes " Jerin Jacob
2015-12-06 16:30 ` [dpdk-dev] [PATCH 0/2] fix performance/cache resource issues with 128-byte " Thomas Monjalon
2015-12-07 7:26 ` Jerin Jacob
2015-12-07 11:40 ` Thomas Monjalon
2015-12-07 14:33 ` Jerin Jacob
2015-12-07 14:35 ` Thomas Monjalon
2015-12-10 16:36 ` [dpdk-dev] [PATCH v2 0/4] " Jerin Jacob
2015-12-10 16:36 ` [dpdk-dev] [PATCH v2 1/4] eal: Introduce new cache macro definitions Jerin Jacob
2015-12-10 16:36 ` [dpdk-dev] [PATCH v2 2/4] mbuf: fix performance/cache resource issue with 128-byte cache line targets Jerin Jacob
2015-12-10 16:36 ` [dpdk-dev] [PATCH v2 3/4] bitmap: optimize for 128-bytes " Jerin Jacob
2015-12-10 16:36 ` [dpdk-dev] [PATCH v2 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets Jerin Jacob
2015-12-11 12:55 ` Ananyev, Konstantin
2015-12-11 13:07 ` Thomas Monjalon
2015-12-11 13:56 ` Jerin Jacob [this message]
2015-12-11 14:42 ` Ananyev, Konstantin
2015-12-14 4:32 ` [dpdk-dev] [PATCH v3 0/4] fix performance/cache resource issues with 128-byte cache line targets Jerin Jacob
2015-12-14 4:32 ` [dpdk-dev] [PATCH v3 1/4] eal: Introduce new cache macro definitions Jerin Jacob
2016-01-04 13:15 ` Olivier MATZ
2016-01-06 15:10 ` Jerin Jacob
2015-12-14 4:32 ` [dpdk-dev] [PATCH v3 2/4] mbuf: fix performance/cache resource issue with 128-byte cache line targets Jerin Jacob
2015-12-14 4:32 ` [dpdk-dev] [PATCH v3 3/4] bitmap: optimize for 128-bytes " Jerin Jacob
2015-12-14 4:32 ` [dpdk-dev] [PATCH v3 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets Jerin Jacob
2016-01-29 7:45 ` [dpdk-dev] [PATCH v4 0/4] fix performance/cache resource issues with 128-byte cache line targets Jerin Jacob
2016-01-29 7:45 ` [dpdk-dev] [PATCH v4 1/4] eal: Introduce new cache line macro definitions Jerin Jacob
2016-01-29 7:45 ` [dpdk-dev] [PATCH v4 2/4] mbuf: fix performance/cache resource issue with 128-byte cache line targets Jerin Jacob
2016-01-29 7:45 ` [dpdk-dev] [PATCH v4 3/4] bitmap: optimize for 128-bytes " Jerin Jacob
2016-01-29 7:45 ` [dpdk-dev] [PATCH v4 4/4] cache/slow-path: reduce cache align requirement for 128-byte cache targets Jerin Jacob
2016-02-08 9:31 ` [dpdk-dev] [PATCH v4 0/4] fix performance/cache resource issues with 128-byte cache line targets Jerin Jacob
2016-02-08 10:24 ` Jan Viktorin
2016-02-08 10:52 ` Jerin Jacob
2016-02-08 12:56 ` Jan Viktorin
2016-02-11 11:53 ` Thomas Monjalon
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