From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, amorenoz@redhat.com,
david.marchand@redhat.com, olivier.matz@6wind.com,
bnemeth@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH v3 0/4] net/virtio: make virtqueue struct cache-friendly
Date: Mon, 15 Mar 2021 17:46:15 +0100 [thread overview]
Message-ID: <20210315164619.372575-1-maxime.coquelin@redhat.com> (raw)
This series optimizes the cache usage of virtqueue struct,
by making a "fake" mbuf being dynamically allocated in Rx
virtnet struct, by removing a useless virtuque pointer
into the virtnet structs and by moving a few fields
to pack holes.
With these 3 patches, the virtqueue struct size goes from
576 bytes (9 cachelines) to 248 bytes (4 cachelines).
Changes in v3:
==============
- Use rte_zmalloc_socket for fake mbuf alloc (David)
- Fix typos in commit messages
- Remove superfluous pointer check befor freeing (David)
- Fix checkpatch warnings
Changes in v2:
==============
- Rebase on latest main
- Improve error path in virtio_init_queue
- Fix various typos in commit messages
Maxime Coquelin (4):
net/virtio: remove reference to virtqueue in vrings
net/virtio: improve queue init error path
net/virtio: allocate fake mbuf in Rx queue
net/virtio: pack virtqueue struct
drivers/net/virtio/virtio_ethdev.c | 64 +++++++++++--------
drivers/net/virtio/virtio_rxtx.c | 37 +++++------
drivers/net/virtio/virtio_rxtx.h | 5 +-
drivers/net/virtio/virtio_rxtx_packed.c | 4 +-
drivers/net/virtio/virtio_rxtx_packed.h | 6 +-
drivers/net/virtio/virtio_rxtx_packed_avx.h | 4 +-
drivers/net/virtio/virtio_rxtx_simple.h | 2 +-
.../net/virtio/virtio_rxtx_simple_altivec.c | 2 +-
drivers/net/virtio/virtio_rxtx_simple_neon.c | 2 +-
drivers/net/virtio/virtio_rxtx_simple_sse.c | 2 +-
.../net/virtio/virtio_user/virtio_user_dev.c | 4 +-
drivers/net/virtio/virtio_user_ethdev.c | 2 +-
drivers/net/virtio/virtqueue.h | 24 ++++---
13 files changed, 85 insertions(+), 73 deletions(-)
--
2.29.2
next reply other threads:[~2021-03-15 16:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 16:46 Maxime Coquelin [this message]
2021-03-15 16:46 ` [dpdk-dev] [PATCH v3 1/4] net/virtio: remove reference to virtqueue in vrings Maxime Coquelin
2021-03-15 16:46 ` [dpdk-dev] [PATCH v3 2/4] net/virtio: improve queue init error path Maxime Coquelin
2021-03-15 16:46 ` [dpdk-dev] [PATCH v3 3/4] net/virtio: allocate fake mbuf in Rx queue Maxime Coquelin
2021-03-15 16:57 ` David Marchand
2021-03-15 17:02 ` Maxime Coquelin
2021-03-15 16:46 ` [dpdk-dev] [PATCH v3 4/4] net/virtio: pack virtqueue struct Maxime Coquelin
2021-03-15 16:59 ` [dpdk-dev] [PATCH v3 0/4] net/virtio: make virtqueue struct cache-friendly David Marchand
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