From: Joyce Kong <joyce.kong@arm.com>
To: jgrajcia@cisco.com, stephen@networkplumber.org,
huzaifa.rahman@emumba.com
Cc: dev@dpdk.org, nd@arm.com, mb@smartsharesystems.com,
ruifeng.wang@arm.com, Joyce Kong <joyce.kong@arm.com>
Subject: [PATCH v3 0/2] add a fast path for memif Rx/Tx
Date: Mon, 22 Aug 2022 03:47:29 +0000 [thread overview]
Message-ID: <20220822034731.528424-1-joyce.kong@arm.com> (raw)
In-Reply-To: <20220701102815.1444223-2-joyce.kong@arm.com>
For memif non-zero-copy mode, there is a branch to compare
the mbuf and memif buffer size during memory copy. Add a
fast memcpy path by removing this branch with mbuf and memif
buffer size defined at compile time. For Rx fast path, bulk
allocating mbufs to get additional speedup. For Tx fast path,
bulk free mbufs which come from the same mempool.
When mbuf == memif buffer size, both Rx/Tx would choose the
fast memcpy path. When mbuf < memif buffer size, the Rx
chooses previous memcpy path while Tx chooses fast memcpy
path. When mbuf > memif buffer size, the Rx chooses fast
memcpy path while Tx chooses previous memcpy path.
Test with 1p1q on N1SDP AArch64 server,
---------------------------------------------------------
buf size | memif = mbuf | memif < mbuf | memif > mbuf
---------------------------------------------------------
non-zc gain | 47.16% | 24.67% | 12.47%
---------------------------------------------------------
zc gain | 20.96% | 9.16% | 10.66%
---------------------------------------------------------
Test with 1p1q on Cascade Lake Xeon X86 server,
---------------------------------------------------------
buf size | memif = mbuf | memif < mbuf | memif > mbuf
---------------------------------------------------------
non-zc gain | 23.52% | 14.20% | 5.10%
---------------------------------------------------------
zc gain | 17.49% | 10.62% | 12.42%
---------------------------------------------------------
v3:
Add bulk allocation to get additional speedup for memif Rx
fast path. <Stephen Hemminger>
v2:
Rebase v1 and update commit message.
Joyce Kong (2):
net/memif: add a Rx fast path
net/memif: add a Tx fast path
drivers/net/memif/rte_eth_memif.c | 271 +++++++++++++++++++++---------
1 file changed, 188 insertions(+), 83 deletions(-)
--
2.25.1
next prev parent reply other threads:[~2022-08-22 3:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-12 9:32 [RFC] net/memif: add a fast path for Rx Joyce Kong
2022-05-17 10:51 ` [PATCH v1 0/2] add a fast path for memif Rx/Tx Joyce Kong
2022-05-17 10:51 ` [PATCH v1 1/2] net/memif: add a Rx fast path Joyce Kong
2022-05-18 16:53 ` Ferruh Yigit
2022-05-19 7:00 ` Joyce Kong
2022-05-19 8:44 ` Joyce Kong
2022-05-18 17:06 ` Ferruh Yigit
2022-05-19 15:09 ` Joyce Kong
2022-05-19 16:38 ` Ferruh Yigit
2022-05-17 10:51 ` [PATCH v1 2/2] net/memif: add a Tx " Joyce Kong
2022-05-17 13:59 ` [PATCH v1 0/2] add a fast path for memif Rx/Tx Morten Brørup
2022-05-18 2:48 ` Ruifeng Wang
2022-07-01 10:28 ` [PATCH v2 " Joyce Kong
2022-07-01 10:28 ` [PATCH v2 1/2] net/memif: add a Rx fast path Joyce Kong
2022-07-01 16:51 ` Stephen Hemminger
2022-08-22 3:47 ` Joyce Kong [this message]
2022-08-22 3:47 ` [PATCH v3 " Joyce Kong
2022-08-31 16:25 ` Stephen Hemminger
2022-09-07 6:06 ` Joyce Kong
2022-08-22 3:47 ` [PATCH v3 2/2] net/memif: add a Tx " Joyce Kong
2022-07-01 10:28 ` [PATCH v2 " Joyce Kong
2022-09-15 6:58 ` [PATCH v4 0/2] add a fast path for memif Rx/Tx Joyce Kong
2022-09-15 6:58 ` [PATCH v4 1/2] net/memif: add a Rx fast path Joyce Kong
2022-09-15 6:58 ` [PATCH v4 2/2] net/memif: add a Tx " Joyce Kong
2022-09-22 9:12 ` [PATCH v4 0/2] add a fast path for memif Rx/Tx Ferruh Yigit
2022-12-09 13:59 ` Ferruh Yigit
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