LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: David Ahern <dsahern@gmail.com>
To: Yunsheng Lin <linyunsheng@huawei.com>,
davem@davemloft.net, kuba@kernel.org
Cc: alexander.duyck@gmail.com, linux@armlinux.org.uk,
mw@semihalf.com, linuxarm@openeuler.org, yisen.zhuang@huawei.com,
salil.mehta@huawei.com, thomas.petazzoni@bootlin.com,
hawk@kernel.org, ilias.apalodimas@linaro.org, ast@kernel.org,
daniel@iogearbox.net, john.fastabend@gmail.com,
akpm@linux-foundation.org, peterz@infradead.org, will@kernel.org,
willy@infradead.org, vbabka@suse.cz, fenghua.yu@intel.com,
guro@fb.com, peterx@redhat.com, feng.tang@intel.com,
jgg@ziepe.ca, mcroce@microsoft.com, hughd@google.com,
jonathan.lemon@gmail.com, alobakin@pm.me, willemb@google.com,
wenxu@ucloud.cn, cong.wang@bytedance.com, haokexin@gmail.com,
nogikh@google.com, elver@google.com, yhs@fb.com,
kpsingh@kernel.org, andrii@kernel.org, kafai@fb.com,
songliubraving@fb.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
chenhao288@hisilicon.com, edumazet@google.com,
yoshfuji@linux-ipv6.org, dsahern@kernel.org, memxor@gmail.com,
linux@rempel-privat.de, atenart@kernel.org, weiwan@google.com,
ap420073@gmail.com, arnd@arndb.de,
mathew.j.martineau@linux.intel.com, aahringo@redhat.com,
ceggers@arri.de, yangbo.lu@nxp.com, fw@strlen.de,
xiangxia.m.yue@gmail.com, linmiaohe@huawei.com
Subject: Re: [PATCH RFC 0/7] add socket to netdev page frag recycling support
Date: Wed, 18 Aug 2021 16:05:52 -0600 [thread overview]
Message-ID: <83b8bae8-d524-36a1-302e-59198410d9a9@gmail.com> (raw)
In-Reply-To: <1629257542-36145-1-git-send-email-linyunsheng@huawei.com>
On 8/17/21 9:32 PM, Yunsheng Lin wrote:
> This patchset adds the socket to netdev page frag recycling
> support based on the busy polling and page pool infrastructure.
>
> The profermance improve from 30Gbit to 41Gbit for one thread iperf
> tcp flow, and the CPU usages decreases about 20% for four threads
> iperf flow with 100Gb line speed in IOMMU strict mode.
>
> The profermance improve about 2.5% for one thread iperf tcp flow
> in IOMMU passthrough mode.
>
Details about the test setup? cpu model, mtu, any other relevant changes
/ settings.
How does that performance improvement compare with using the Tx ZC API?
At 1500 MTU I see a CPU drop on the Tx side from 80% to 20% with the ZC
API and ~10% increase in throughput. Bumping the MTU to 3300 and
performance with the ZC API is 2x the current model with 1/2 the cpu.
Epyc 7502, ConnectX-6, IOMMU off.
In short, it seems like improving the Tx ZC API is the better path
forward than per-socket page pools.
next prev parent reply other threads:[~2021-08-18 22:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 3:32 Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 1/7] page_pool: refactor the page pool to support multi alloc context Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 2/7] skbuff: add interface to manipulate frag count for tx recycling Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 3/7] net: add NAPI api to register and retrieve the page pool ptr Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 4/7] net: pfrag_pool: add pfrag pool support based on page pool Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 5/7] sock: support refilling pfrag from pfrag_pool Yunsheng Lin
2021-08-18 3:32 ` [PATCH RFC 6/7] net: hns3: support tx recycling in the hns3 driver Yunsheng Lin
2021-08-18 8:57 ` [PATCH RFC 0/7] add socket to netdev page frag recycling support Eric Dumazet
2021-08-18 9:36 ` Yunsheng Lin
2021-08-23 9:25 ` [Linuxarm] " Yunsheng Lin
2021-08-23 15:04 ` Eric Dumazet
2021-08-24 8:03 ` Yunsheng Lin
2021-08-25 16:29 ` David Ahern
2021-08-25 16:32 ` Eric Dumazet
2021-08-25 16:38 ` David Ahern
2021-08-25 17:24 ` Eric Dumazet
2021-08-26 4:05 ` David Ahern
2021-08-18 22:05 ` David Ahern [this message]
2021-08-19 8:18 ` Yunsheng Lin
2021-08-20 14:35 ` David Ahern
2021-08-23 3:32 ` Yunsheng Lin
2021-08-24 3:34 ` David Ahern
2021-08-24 8:41 ` Yunsheng Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=83b8bae8-d524-36a1-302e-59198410d9a9@gmail.com \
--to=dsahern@gmail.com \
--cc=aahringo@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=alexander.duyck@gmail.com \
--cc=alobakin@pm.me \
--cc=andrii@kernel.org \
--cc=ap420073@gmail.com \
--cc=arnd@arndb.de \
--cc=ast@kernel.org \
--cc=atenart@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=ceggers@arri.de \
--cc=chenhao288@hisilicon.com \
--cc=cong.wang@bytedance.com \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=edumazet@google.com \
--cc=elver@google.com \
--cc=feng.tang@intel.com \
--cc=fenghua.yu@intel.com \
--cc=fw@strlen.de \
--cc=guro@fb.com \
--cc=haokexin@gmail.com \
--cc=hawk@kernel.org \
--cc=hughd@google.com \
--cc=ilias.apalodimas@linaro.org \
--cc=jgg@ziepe.ca \
--cc=john.fastabend@gmail.com \
--cc=jonathan.lemon@gmail.com \
--cc=kafai@fb.com \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=linmiaohe@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=linux@rempel-privat.de \
--cc=linuxarm@openeuler.org \
--cc=linyunsheng@huawei.com \
--cc=mathew.j.martineau@linux.intel.com \
--cc=mcroce@microsoft.com \
--cc=memxor@gmail.com \
--cc=mw@semihalf.com \
--cc=netdev@vger.kernel.org \
--cc=nogikh@google.com \
--cc=peterx@redhat.com \
--cc=peterz@infradead.org \
--cc=salil.mehta@huawei.com \
--cc=songliubraving@fb.com \
--cc=thomas.petazzoni@bootlin.com \
--cc=vbabka@suse.cz \
--cc=weiwan@google.com \
--cc=wenxu@ucloud.cn \
--cc=will@kernel.org \
--cc=willemb@google.com \
--cc=willy@infradead.org \
--cc=xiangxia.m.yue@gmail.com \
--cc=yangbo.lu@nxp.com \
--cc=yhs@fb.com \
--cc=yisen.zhuang@huawei.com \
--cc=yoshfuji@linux-ipv6.org \
--subject='Re: [PATCH RFC 0/7] add socket to netdev page frag recycling support' \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).