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Message-Id: <20250222100725.27838-1-chia-yu.chang@nokia-bell-labs.com>
Date: Sat, 22 Feb 2025 11:07:24 +0100
From: chia-yu.chang@...ia-bell-labs.com
To: netdev@...r.kernel.org, dave.taht@...il.com, pabeni@...hat.com,
jhs@...atatu.com, kuba@...nel.org, stephen@...workplumber.org,
xiyou.wangcong@...il.com, jiri@...nulli.us, davem@...emloft.net,
edumazet@...gle.com, horms@...nel.org, andrew+netdev@...n.ch,
ij@...nel.org, ncardwell@...gle.com,
koen.de_schepper@...ia-bell-labs.com, g.white@...lelabs.com,
ingemar.s.johansson@...csson.com, mirja.kuehlewind@...csson.com,
cheshire@...le.com, rs.ietf@....at, Jason_Livingood@...cast.com,
vidhi_goel@...le.com
Cc: Chia-Yu Chang <chia-yu.chang@...ia-bell-labs.com>
Subject: [PATCH v5 net-next 0/1] DUALPI2 patch
From: Chia-Yu Chang <chia-yu.chang@...ia-bell-labs.com>
Hello,
Please find DUALPI2 patch v5.
In addition to the changes, a comparison was done between MQ + DUALPI2, MQ + FQ_PIE,
MQ + FQ_CODEL as suggested by Dave, you can find them below.
Unshaped 1gigE with 4 download streams test:
- Summary of tcp_4down run 'MQ + FQ_CODEL':
avg median # data pts
Ping (ms) ICMP : 1.19 1.34 ms 349
TCP download avg : 235.42 N/A Mbits/s 349
TCP download sum : 941.68 N/A Mbits/s 349
TCP download::1 : 235.19 235.39 Mbits/s 349
TCP download::2 : 235.03 235.35 Mbits/s 349
TCP download::3 : 236.89 235.44 Mbits/s 349
TCP download::4 : 234.57 235.19 Mbits/s 349
- Summary of tcp_4down run 'MQ + FQ_PIE'
avg median # data pts
Ping (ms) ICMP : 1.21 1.37 ms 350
TCP download avg : 235.42 N/A Mbits/s 350
TCP download sum : 941.61 N/A Mbits/s 350
TCP download::1 : 232.54 233.13 Mbits/s 350
TCP download::2 : 232.52 232.80 Mbits/s 350
TCP download::3 : 233.14 233.78 Mbits/s 350
TCP download::4 : 243.41 241.48 Mbits/s 350
- Summary of tcp_4down run 'MQ + DUALPI2'
avg median # data pts
Ping (ms) ICMP : 1.19 1.34 ms 349
TCP download avg : 235.42 N/A Mbits/s 349
TCP download sum : 941.68 N/A Mbits/s 349
TCP download::1 : 235.19 235.39 Mbits/s 349
TCP download::2 : 235.03 235.35 Mbits/s 349
TCP download::3 : 236.89 235.44 Mbits/s 349
TCP download::4 : 234.57 235.19 Mbits/s 349
Unshaped 1gigE with 128 download streams test:
- Summary of tcp_128down run 'MQ + FQ_CODEL':
avg median # data pts
Ping (ms) ICMP : 1.88 1.86 ms 350
TCP download avg : 7.39 N/A Mbits/s 350
TCP download sum : 946.47 N/A Mbits/s 350
- Summary of tcp_128down run 'MQ + FQ_PIE':
avg median # data pts
Ping (ms) ICMP : 1.88 1.86 ms 350
TCP download avg : 7.39 N/A Mbits/s 350
TCP download sum : 946.47 N/A Mbits/s 350
- Summary of tcp_128down run 'MQ + DUALPI2':
avg median # data pts
Ping (ms) ICMP : 1.88 1.86 ms 350
TCP download avg : 7.39 N/A Mbits/s 350
TCP download sum : 946.47 N/A Mbits/s 350
Unshaped 10gigE with 4 download streams test:
- Summary of tcp_4down run 'MQ + FQ_CODEL':
avg median # data pts
Ping (ms) ICMP : 0.22 0.23 ms 350
TCP download avg : 2354.08 N/A Mbits/s 350
TCP download sum : 9416.31 N/A Mbits/s 350
TCP download::1 : 2353.65 2352.81 Mbits/s 350
TCP download::2 : 2354.54 2354.21 Mbits/s 350
TCP download::3 : 2353.56 2353.78 Mbits/s 350
TCP download::4 : 2354.56 2354.45 Mbits/s 350
- Summary of tcp_4down run 'MQ + FQ_PIE':
avg median # data pts
Ping (ms) ICMP : 0.20 0.19 ms 350
TCP download avg : 2354.76 N/A Mbits/s 350
TCP download sum : 9419.04 N/A Mbits/s 350
TCP download::1 : 2354.77 2353.89 Mbits/s 350
TCP download::2 : 2353.41 2354.29 Mbits/s 350
TCP download::3 : 2356.18 2354.19 Mbits/s 350
TCP download::4 : 2354.68 2353.15 Mbits/s 350
- Summary of tcp_4down run 'MQ + DUALPI2':
avg median # data pts
Ping (ms) ICMP : 0.24 0.24 ms 350
TCP download avg : 2354.11 N/A Mbits/s 350
TCP download sum : 9416.43 N/A Mbits/s 350
TCP download::1 : 2354.75 2353.93 Mbits/s 350
TCP download::2 : 2353.15 2353.75 Mbits/s 350
TCP download::3 : 2353.49 2353.72 Mbits/s 350
TCP download::4 : 2355.04 2353.73 Mbits/s 350
Unshaped 10gigE with 128 download streams test:
- Summary of tcp_128down run 'MQ + FQ_CODEL':
avg median # data pts
Ping (ms) ICMP : 7.57 8.69 ms 350
TCP download avg : 73.97 N/A Mbits/s 350
TCP download sum : 9467.82 N/A Mbits/s 350
- Summary of tcp_128down run 'MQ + FQ_PIE':
avg median # data pts
Ping (ms) ICMP : 7.82 8.91 ms 350
TCP download avg : 73.97 N/A Mbits/s 350
TCP download sum : 9468.42 N/A Mbits/s 350
- Summary of tcp_128down run 'MQ + DUALPI2':
avg median # data pts
Ping (ms) ICMP : 6.87 7.93 ms 350
TCP download avg : 73.95 N/A Mbits/s 350
TCP download sum : 9465.87 N/A Mbits/s 350
From the results shown above, we see small differences between combinations.
v5
- Update commit message to include results of no_split_gso and split_gso (Dave Taht <dave.taht@...il.com> and Paolo Abeni <pabeni@...hat.com>)
- Add memlimit in dualpi2 attribute, and add memory_used, max_memory_used, memory_limit in dualpi2 stats (Dave Taht <dave.taht@...il.com>)
- Update note in sch_dualpi2.c related to BBRv3 status (Dave Taht <dave.taht@...il.com>)
- Update license identifier (Dave Taht <dave.taht@...il.com>)
- Add selftest in tools/testing/selftests/tc-testing (Cong Wang <xiyou.wangcong@...il.com>)
- Use netlink policies for parameter checks (Jamal Hadi Salim <jhs@...atatu.com>)
- Modify texts & fix typos in Documentation/netlink/specs/tc.yaml (Dave Taht <dave.taht@...il.com>)
- Add dscsriptions of packet counter statistics and reset function of sch_dualpi2.c
- Fix step_thresh in packets
- Update code comments in sch_dualpi2.c
v4
- Update statement in Kconfig for DualPI2 (Stephen Hemminger <stephen@...workplumber.org>)
- Put a blank line after #define in sch_dualpi2.c (Stephen Hemminger <stephen@...workplumber.org>)
- Fix line length warning
v3
- Fix compilaiton error
- Update Documentation/netlink/specs/tc.yaml (Jakub Kicinski <kuba@...nel.org>)
v2
- Add Documentation/netlink/specs/tc.yaml (Jakub Kicinski <kuba@...nel.org>)
- Use dualpi2 instead of skb prefix (Jamal Hadi Salim <jhs@...atatu.com>)
- Replace nla_parse_nested_deprecated with nla_parse_nested (Jamal Hadi Salim <jhs@...atatu.com>)
- Fix line length warning
For more details of DualPI2, plesae refer IETF RFC9332
(https://datatracker.ietf.org/doc/html/rfc9332).
--
Chia-Yu
Koen De Schepper (1):
sched: Add dualpi2 qdisc
Documentation/netlink/specs/tc.yaml | 140 +++
include/linux/netdevice.h | 1 +
include/uapi/linux/pkt_sched.h | 38 +
net/sched/Kconfig | 12 +
net/sched/Makefile | 1 +
net/sched/sch_dualpi2.c | 1081 +++++++++++++++++
tools/testing/selftests/tc-testing/config | 1 +
.../tc-testing/tc-tests/qdiscs/dualpi2.json | 149 +++
8 files changed, 1423 insertions(+)
create mode 100644 net/sched/sch_dualpi2.c
create mode 100644 tools/testing/selftests/tc-testing/tc-tests/qdiscs/dualpi2.json
--
2.34.1
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