From: Thomas Monjalon <thomas@monjalon.net> To: dev@dpdk.org Cc: ferruh.yigit@intel.com, david.marchand@redhat.com, bruce.richardson@intel.com, olivier.matz@6wind.com, andrew.rybchenko@oktetlabs.ru, akhil.goyal@nxp.com, jerinj@marvell.com, Ray Kinsella <mdr@ashroe.eu>, Neil Horman <nhorman@tuxdriver.com> Subject: [dpdk-dev] [PATCH v5 15/15] mbuf: move pool pointer in hotter first half Date: Fri, 30 Oct 2020 18:29:40 +0100 Message-ID: <20201030172940.1073558-16-thomas@monjalon.net> (raw) In-Reply-To: <20201030172940.1073558-1-thomas@monjalon.net> The mempool pointer in the mbuf struct is moved from the second to the first half. It should increase performance on most systems having 64-byte cache line, i.e. mbuf is split in two cache lines. On such system, the first half (also called first cache line) is hotter than the second one where the pool pointer was. Moving this field gives more space to dynfield1. This is how the mbuf layout looks like (pahole-style): word type name byte size 0 void * buf_addr; /* 0 + 8 */ 1 rte_iova_t buf_iova /* 8 + 8 */ /* --- RTE_MARKER64 rearm_data; */ 2 uint16_t data_off; /* 16 + 2 */ uint16_t refcnt; /* 18 + 2 */ uint16_t nb_segs; /* 20 + 2 */ uint16_t port; /* 22 + 2 */ 3 uint64_t ol_flags; /* 24 + 8 */ /* --- RTE_MARKER rx_descriptor_fields1; */ 4 uint32_t union packet_type; /* 32 + 4 */ uint32_t pkt_len; /* 36 + 4 */ 5 uint16_t data_len; /* 40 + 2 */ uint16_t vlan_tci; /* 42 + 2 */ 5.5 uint64_t union hash; /* 44 + 8 */ 6.5 uint16_t vlan_tci_outer; /* 52 + 2 */ uint16_t buf_len; /* 54 + 2 */ 7 struct rte_mempool * pool; /* 56 + 8 */ /* --- RTE_MARKER cacheline1; */ 8 struct rte_mbuf * next; /* 64 + 8 */ 9 uint64_t union tx_offload; /* 72 + 8 */ 10 uint16_t priv_size; /* 80 + 2 */ uint16_t timesync; /* 82 + 2 */ uint32_t seqn; /* 84 + 4 */ 11 struct rte_mbuf_ext_shared_info * shinfo; /* 88 + 8 */ 12 uint64_t dynfield1[4]; /* 96 + 32 */ 16 /* --- END 128 */ Signed-off-by: Thomas Monjalon <thomas@monjalon.net> --- doc/guides/rel_notes/deprecation.rst | 5 ----- lib/librte_kni/rte_kni_common.h | 3 ++- lib/librte_mbuf/rte_mbuf_core.h | 5 ++--- 3 files changed, 4 insertions(+), 9 deletions(-) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 72dbb25b83..07ca1dcbb2 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -88,11 +88,6 @@ Deprecation Notices - ``seqn`` - As a consequence, the layout of the ``struct rte_mbuf`` will be re-arranged, - avoiding impact on vectorized implementation of the driver datapaths, - while evaluating performance gains of a better use of the first cache line. - - * ethdev: the legacy filter API, including ``rte_eth_dev_filter_supported()``, ``rte_eth_dev_filter_ctrl()`` as well as filter types MACVLAN, ETHERTYPE, FLEXIBLE, SYN, NTUPLE, TUNNEL, FDIR, diff --git a/lib/librte_kni/rte_kni_common.h b/lib/librte_kni/rte_kni_common.h index 36d66e2ffa..ffb3182731 100644 --- a/lib/librte_kni/rte_kni_common.h +++ b/lib/librte_kni/rte_kni_common.h @@ -84,10 +84,11 @@ struct rte_kni_mbuf { char pad2[4]; uint32_t pkt_len; /**< Total pkt len: sum of all segment data_len. */ uint16_t data_len; /**< Amount of data in segment buffer. */ + char pad3[14]; + void *pool; /* fields on second cache line */ __attribute__((__aligned__(RTE_CACHE_LINE_MIN_SIZE))) - void *pool; void *next; /**< Physical address of next mbuf in kernel. */ }; diff --git a/lib/librte_mbuf/rte_mbuf_core.h b/lib/librte_mbuf/rte_mbuf_core.h index 52ca1c842f..ee185fa32b 100644 --- a/lib/librte_mbuf/rte_mbuf_core.h +++ b/lib/librte_mbuf/rte_mbuf_core.h @@ -584,12 +584,11 @@ struct rte_mbuf { uint16_t buf_len; /**< Length of segment buffer. */ - uint64_t unused; + struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */ /* second cache line - fields only used in slow path or on TX */ RTE_MARKER cacheline1 __rte_cache_min_aligned; - struct rte_mempool *pool; /**< Pool from which mbuf was allocated. */ struct rte_mbuf *next; /**< Next segment of scattered packet. */ /* fields to support TX offloads */ @@ -646,7 +645,7 @@ struct rte_mbuf { */ struct rte_mbuf_ext_shared_info *shinfo; - uint64_t dynfield1[3]; /**< Reserved for dynamic fields. */ + uint64_t dynfield1[4]; /**< Reserved for dynamic fields. */ } __rte_cache_aligned; /** -- 2.28.0
next prev parent reply other threads:[~2020-10-30 17:35 UTC|newest] Thread overview: 178+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-10-26 5:20 [dpdk-dev] [PATCH 00/15] remove mbuf userdata Thomas Monjalon 2020-10-26 5:20 ` [dpdk-dev] [PATCH 01/15] examples: enclose DPDK includes with angle brackets Thomas Monjalon 2020-10-26 14:23 ` Andrew Rybchenko 2020-10-27 11:32 ` Bruce Richardson 2020-10-26 5:20 ` [dpdk-dev] [PATCH 02/15] kni: move header file from EAL Thomas Monjalon 2020-10-26 14:25 ` Andrew Rybchenko 2020-10-27 11:33 ` Bruce Richardson 2020-10-26 5:20 ` [dpdk-dev] [PATCH 03/15] mbuf: fix typo in dynamic field convention note Thomas Monjalon 2020-10-26 14:26 ` Andrew Rybchenko 2020-10-26 5:20 ` [dpdk-dev] [PATCH 04/15] node: switch IPv4 metadata to dynamic mbuf field Thomas Monjalon 2020-10-26 10:40 ` David Marchand 2020-10-26 14:29 ` Thomas Monjalon 2020-10-26 14:34 ` Andrew Rybchenko 2020-10-26 14:39 ` Thomas Monjalon 2020-10-26 5:20 ` [dpdk-dev] [PATCH 05/15] security: switch " Thomas Monjalon 2020-10-26 10:41 ` David Marchand 2020-10-26 14:30 ` Thomas Monjalon 2020-10-26 17:58 ` Akhil Goyal 2020-10-26 15:06 ` Andrew Rybchenko 2020-10-26 16:49 ` Thomas Monjalon 2020-10-26 19:03 ` Thomas Monjalon 2020-10-26 5:20 ` [dpdk-dev] [PATCH 06/15] event/sw: switch test counter " Thomas Monjalon 2020-10-26 15:09 ` Andrew Rybchenko 2020-10-26 5:20 ` [dpdk-dev] [PATCH 07/15] net/ark: ignore user data Thomas Monjalon 2020-10-26 5:20 ` [dpdk-dev] [PATCH 08/15] net/bnxt: switch CFA code to dynamic mbuf field Thomas Monjalon 2020-10-26 10:42 ` David Marchand 2020-10-26 14:32 ` Thomas Monjalon 2020-10-26 5:20 ` [dpdk-dev] [PATCH 09/15] net/vmxnet3: switch MSS hint " Thomas Monjalon 2020-10-26 15:14 ` Andrew Rybchenko 2020-10-26 15:21 ` Andrew Rybchenko 2020-10-26 16:50 ` Thomas Monjalon 2020-10-26 18:13 ` Thomas Monjalon 2020-10-26 5:21 ` [dpdk-dev] [PATCH 10/15] test/distributor: switch sequence " Thomas Monjalon 2020-10-26 9:39 ` Lukasz Wojciechowski 2020-10-26 5:21 ` [dpdk-dev] [PATCH 11/15] test/graph: switch user data " Thomas Monjalon 2020-10-26 5:21 ` [dpdk-dev] [PATCH 12/15] app/eventdev: switch flow ID " Thomas Monjalon 2020-10-26 5:21 ` [dpdk-dev] [PATCH 13/15] examples/bbdev: switch " Thomas Monjalon 2020-10-26 5:21 ` [dpdk-dev] [PATCH 14/15] examples/rxtx_callbacks: " Thomas Monjalon 2020-10-26 10:43 ` David Marchand 2020-10-26 14:33 ` Thomas Monjalon 2020-10-26 14:53 ` Stephen Hemminger 2020-10-26 16:32 ` Thomas Monjalon 2020-10-26 5:21 ` [dpdk-dev] [PATCH 15/15] mbuf: remove userdata field Thomas Monjalon 2020-10-26 22:19 ` [dpdk-dev] [PATCH v2 00/15] remove mbuf userdata Thomas Monjalon 2020-10-26 22:19 ` [dpdk-dev] [PATCH v2 01/15] examples: enclose DPDK includes with angle brackets Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 02/15] kni: move header file from EAL Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 03/15] mbuf: fix typo in dynamic field convention note Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 04/15] node: switch IPv4 metadata to dynamic mbuf field Thomas Monjalon 2020-10-27 9:32 ` Olivier Matz 2020-10-27 9:34 ` Thomas Monjalon 2020-10-27 14:23 ` Nithin Dabilpuram 2020-10-27 14:33 ` Thomas Monjalon 2020-10-27 15:33 ` Nithin Dabilpuram 2020-10-27 15:57 ` Thomas Monjalon 2020-10-27 16:16 ` Nithin Dabilpuram 2020-10-27 16:26 ` Thomas Monjalon 2020-10-28 9:30 ` [dpdk-dev] [PATCH v4] " Nithin Dabilpuram 2020-10-28 10:08 ` Thomas Monjalon 2020-10-28 10:24 ` Van Haaren, Harry 2020-10-28 10:42 ` Nithin Dabilpuram 2020-10-28 10:43 ` Thomas Monjalon 2020-10-28 18:07 ` Thomas Monjalon 2020-10-29 10:17 ` Van Haaren, Harry 2020-10-28 10:33 ` Nithin Dabilpuram 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 05/15] security: switch " Thomas Monjalon 2020-10-27 2:01 ` Wang, Haiyue 2020-10-27 8:52 ` Thomas Monjalon 2020-10-27 13:12 ` Wang, Haiyue 2020-10-27 10:05 ` Olivier Matz 2020-10-27 16:10 ` Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 06/15] event/sw: switch test counter " Thomas Monjalon 2020-10-27 10:15 ` Olivier Matz 2020-10-27 16:14 ` Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 07/15] net/ark: ignore user data Thomas Monjalon 2020-10-27 15:32 ` Ed Czeck 2020-10-27 15:55 ` Thomas Monjalon 2020-10-27 16:05 ` Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 08/15] net/bnxt: switch CFA code to dynamic mbuf field Thomas Monjalon 2020-10-27 4:44 ` Ajit Khaparde 2020-10-27 10:31 ` Olivier Matz 2020-10-27 16:22 ` Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 09/15] net/vmxnet3: switch MSS hint " Thomas Monjalon 2020-10-27 10:45 ` Olivier Matz 2020-10-27 16:25 ` Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 10/15] test/distributor: switch sequence " Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 11/15] test/graph: switch user data " Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 12/15] app/eventdev: switch flow ID " Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 13/15] examples/bbdev: switch " Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 14/15] examples/rxtx_callbacks: " Thomas Monjalon 2020-10-26 22:20 ` [dpdk-dev] [PATCH v2 15/15] mbuf: remove userdata field Thomas Monjalon 2020-10-27 10:53 ` Olivier Matz 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 00/15] remove mbuf userdata Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 01/15] examples: enclose DPDK includes with angle brackets Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 02/15] kni: move header file from EAL Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 03/15] mbuf: fix typo in dynamic field convention note Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 04/15] node: switch IPv4 metadata to dynamic mbuf field Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 05/15] security: switch " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 06/15] event/sw: switch test counter " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 07/15] net/ark: switch user data " Thomas Monjalon 2020-10-27 22:30 ` Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 08/15] net/bnxt: switch CFA code " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 09/15] net/vmxnet3: switch MSS hint " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 10/15] test/distributor: switch sequence " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 11/15] test/graph: switch user data " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 12/15] app/eventdev: switch flow ID " Thomas Monjalon 2020-10-28 4:54 ` Jerin Jacob 2020-10-28 7:43 ` Thomas Monjalon 2020-10-28 8:06 ` Jerin Jacob 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 13/15] examples/bbdev: switch " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 14/15] examples/rxtx_callbacks: " Thomas Monjalon 2020-10-27 21:01 ` [dpdk-dev] [PATCH v3 15/15] mbuf: remove userdata field Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 00/15] remove mbuf userdata Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 01/15] examples: enclose DPDK includes with angle brackets Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 02/15] kni: move header file from EAL Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 03/15] mbuf: fix typo in dynamic field convention note Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 04/15] node: switch IPv4 metadata to dynamic mbuf field Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 05/15] security: switch " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 06/15] event/sw: switch test counter " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 07/15] net/ark: switch user data to dynamic mbuf fields Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 08/15] net/bnxt: switch CFA code to dynamic mbuf field Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 09/15] net/vmxnet3: switch MSS hint " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 10/15] test/distributor: switch sequence " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 11/15] test/graph: switch user data " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 12/15] app/eventdev: switch flow ID " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 13/15] examples/bbdev: switch " Thomas Monjalon 2020-10-28 11:51 ` Andrew Rybchenko 2020-10-28 12:21 ` Thomas Monjalon 2020-10-28 12:55 ` Andrew Rybchenko 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 14/15] examples/rxtx_callbacks: " Thomas Monjalon 2020-10-28 10:26 ` [dpdk-dev] [PATCH v4 15/15] mbuf: remove userdata field Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 00/15] remove mbuf userdata Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 01/15] eventdev: remove software Rx timestamp Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 02/15] mbuf: add Rx timestamp dynamic flag Thomas Monjalon 2020-11-01 20:03 ` Andrew Rybchenko 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 03/15] ethdev: register mbuf field and flags for timestamp Thomas Monjalon 2020-11-01 20:10 ` Andrew Rybchenko 2020-11-01 22:54 ` Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 04/15] latency: switch timestamp to dynamic mbuf field Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 05/15] net/ark: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 06/15] net/dpaa2: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 07/15] net/mlx5: fix dynamic mbuf offset lookup check Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 08/15] net/mlx5: switch timestamp to dynamic mbuf field Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 09/15] net/nfb: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 10/15] net/octeontx2: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 11/15] net/pcap: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 12/15] app/testpmd: " Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 13/15] examples/rxtx_callbacks: switch timestamp to dynamic field Thomas Monjalon 2020-10-30 17:29 ` [dpdk-dev] [PATCH v5 14/15] mbuf: remove deprecated timestamp field Thomas Monjalon 2020-11-01 20:13 ` Andrew Rybchenko 2020-10-30 17:29 ` Thomas Monjalon [this message] 2020-11-01 20:23 ` [dpdk-dev] [PATCH v5 15/15] mbuf: move pool pointer in hotter first half Andrew Rybchenko 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 00/15] remove mbuf userdata Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 01/15] examples: enclose DPDK includes with angle brackets Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 02/15] kni: move header file from EAL Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 03/15] mbuf: fix typo in dynamic field convention note Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 04/15] node: switch IPv4 metadata to dynamic mbuf field Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 05/15] security: switch " Thomas Monjalon 2020-10-31 8:56 ` David Marchand 2020-10-31 9:26 ` David Marchand 2020-10-31 14:38 ` Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 06/15] event/sw: switch test counter " Thomas Monjalon 2020-10-30 18:53 ` Van Haaren, Harry 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 07/15] net/ark: switch user data to dynamic mbuf fields Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 08/15] net/bnxt: switch CFA code to dynamic mbuf field Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 09/15] net/vmxnet3: switch MSS hint " Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 10/15] test/distributor: switch sequence " Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 11/15] test/graph: switch user data " Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 12/15] app/eventdev: switch flow ID " Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 13/15] examples/bbdev: switch " Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 14/15] examples/rxtx_callbacks: switch TSC to dynamic field Thomas Monjalon 2020-10-30 17:44 ` [dpdk-dev] [PATCH v6 15/15] mbuf: remove userdata field Thomas Monjalon 2020-10-31 15:07 ` [dpdk-dev] [PATCH v6 00/15] remove mbuf userdata Thomas Monjalon 2020-10-31 23:36 ` Ferruh Yigit 2020-11-01 9:15 ` Thomas Monjalon 2020-11-01 10:26 ` David Marchand 2020-11-02 9:11 ` Jiawen Wu 2020-11-02 11:08 ` Ferruh Yigit 2020-11-02 11:58 ` Ferruh Yigit
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