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Message-ID: <20240515122552.34af8692@kernel.org> Date: Wed, 15 May 2024 12:25:52 -0700 From: Jakub Kicinski <kuba@...nel.org> To: netdev@...r.kernel.org, netdev-driver-reviewers@...r.kernel.org Subject: [ANN] netdev development stats for 6.10 Intro ----- We have posted our pull requests with networking changes for the 6.10 kernel release last night. As is tradition here are the development statistics based on mailing list traffic on netdev@...r. These stats are somewhat like LWN stats: https://lwn.net/Articles/956765/ but more focused on mailing list participation. Previous stats (for 6.9): https://lore.kernel.org/all/20240312124346.5aa3b14a@kernel.org/ General stats ------------- The cycle started on Mon, 11 Mar and ended Tue, 14 May. Same length as the previous cycle. Mailing list volume didn't change much, we saw 266 emails a day. Similarly the number of people discussing things on the list remained almost unchanged. Netdev maintainers applied 20 commits a day, which is 13% down from 6.9 (6.9 was record high, so not too alarming). Review coverage by tags in the git repo recovered by 2%, 63% of commits had at least one review tag, and 56% had one from a person using a different email domain than the author. Review coverage by number of changesets which got applied after receiving at least one comment on the mailing list (across all revisions) dropped to 60%. Testing ------- The netdev selftest runner went live during the previous release cycle. Last time I mentioned that there were 66 ignored cases, those were either too flaky or always failing. I'm happy to report that we got the number down to 20. We were using results from 243 selftests at the end of 6.9 cycle, I counted 283 tests in use now, so 40 extra tests. Many of the tests are more of test suites than single tests, for example we run full BPF CI now, but the point is - there's growth :) Here are top 10 individuals with the highest number of commits[*] to selftests: 1 [ 43] Jakub Kicinski 2 [ 42] Florian Westphal 3 [ 23] Petr Machata 4 [ 13] Geliang Tang 5 [ 7] Kuniyuki Iwashima 6 [ 6] Lukasz Majewski 7 [ 4] Ido Schimmel 8 [ 4] Jiri Pirko 9 [ 4] Dmitry Safonov 10 [ 2] Willem de Bruijn [*] commits which were applied directly by netdev maintainers. I also tried to figure out which tests give us the most signal. It's not easy to calculate because of flakes (BTW when I say flake I usually mean that the test fails, but passes on retry - we auto-retry all tests run directly by NIPA). I used the following criteria: overall fail rate lower than 3%, never flaked. With that the tests which failed the most are: | Group Test Fail cnt --------------------------------------------------------- 1 | vmksft-net-dbg test-vxlan-mdb-sh 24 2 | vmksft-net ioam6-sh 21 3 | vmksft-net test-vxlan-under-vrf-sh 20 4 | vmksft-forwarding-dbg q-in-vni-ipv6-sh 20 5 | vmksft-forwarding-dbg vxlan-asymmetric-sh 20 6 | vmksft-forwarding-dbg vxlan-symmetric-ipv6-sh 20 7 | vmksft-forwarding-dbg vxlan-symmetric-sh 20 8 | doc-build htmldoc 20 9 | vmksft-net icmp-redirect-sh 19 10 | vmksft-forwarding-dbg vxlan-asymmetric-ipv6-sh 19 11 | vmksft-net big-tcp-sh 18 12 | vmksft-net test-vxlan-mdb-sh 18 13 | vmksft-net test-vxlan-vnifiltering-sh 17 14 | vmksft-net-dbg tls 17 15 | vmksft-forwarding-dbg dual-vxlan-bridge-sh 17 Which may or may not mean those tests caught the most bugs. Almost exactly 1/8th of commits we applied were touching selftests (12.51%). That doesn't seem very high. Developer rankings ------------------ Top reviewers (cs): Top reviewers (msg): 1 ( +1) [27] Simon Horman 1 ( ) [57] Jakub Kicinski 2 ( -1) [25] Jakub Kicinski 2 ( ) [55] Simon Horman 3 ( +1) [11] Paolo Abeni 3 ( ) [35] Andrew Lunn 4 ( +2) [10] Eric Dumazet 4 ( +1) [24] Eric Dumazet 5 ( -2) [10] Andrew Lunn 5 ( +7) [20] Willem de Bruijn 6 ( -1) [ 8] Jiri Pirko 6 ( ) [19] Paolo Abeni 7 ( ) [ 5] David Ahern 7 ( -3) [17] Jiri Pirko 8 ( +1) [ 5] Willem de Bruijn 8 ( +7) [11] Jason Wang 9 ( +2) [ 3] Florian Fainelli 9 (***) [ 8] Sabrina Dubroca 10 ( +3) [ 3] Jacob Keller 10 ( -2) [ 8] David Ahern 11 ( -1) [ 3] Krzysztof Kozlowski 11 ( -4) [ 8] Krzysztof Kozlowski 12 ( ) [ 3] Russell King 12 ( -1) [ 8] Russell King 13 (+20) [ 3] Dan Carpenter 13 ( -4) [ 6] Florian Fainelli 14 ( +8) [ 2] Przemek Kitszel 14 ( +7) [ 6] Serge Semin 15 (+22) [ 2] Alexander Lobakin 15 ( -1) [ 6] Jacob Keller Willem jumps into the top 5 after being quite active this month (all over core networking and selftests), Sabrina reviewed a number of network crypto changes (xfrm, macsec, opvpn). On the "by changeset" side Jake climbs into top 10, with Przemek and Olek also in the top 15, this is a strong cycle for Intel! Dan caught and reported a number of bugs as well as helped to review and guide bug fix contributions from others (ax25 patches most recently). Thank you all very much for your work! Top authors (cs): Top authors (msg): 1 ( ) [9] Eric Dumazet 1 ( +1) [21] Jakub Kicinski 2 ( ) [5] Jakub Kicinski 2 ( -1) [19] Eric Dumazet 3 (***) [4] Asbjørn Sloth Tønnesen 3 (***) [17] Edward Liaw 4 (+45) [3] Russell King 4 (***) [14] Karol Kolacinski 5 ( +2) [2] Kuniyuki Iwashima 5 (***) [14] Kory Maincent 6 ( -3) [2] Breno Leitao 6 (***) [14] Jason Xing 7 (+43) [2] Florian Westphal 7 (***) [13] Mike Rapoport Asbjørn takes a high position on the author list with the improvements to error checking in a large number of driver flower offloads. Russell worked on converting phylink drivers to newer APIs. (Both used a somewhat limited amount of threading when posting.) Florian W, in addition to his usual work, moved and reworked netfilter tests, which now run in netdev CI. On the right side Mike R and Edward L are "non netdev people" who just CCed netdev on their large series. Top scores (positive): Top scores (negative): 1 ( +1) [395] Simon Horman 1 (***) [67] Edward Liaw 2 ( -1) [351] Jakub Kicinski 2 (***) [58] Karol Kolacinski 3 ( ) [176] Andrew Lunn 3 (***) [55] Kory Maincent (Dent Project) 4 ( +1) [158] Paolo Abeni 4 (***) [52] Mike Rapoport 5 ( -1) [111] Jiri Pirko 5 (***) [44] Asbjørn Sloth Tønnesen 6 ( +2) [109] Willem de Bruijn 6 ( -4) [38] Xuan Zhuo 7 (+32) [ 99] Eric Dumazet 7 (+37) [36] Mateusz Polchlopek 8 ( -1) [ 70] David Ahern 8 (+14) [36] Oleksij Rempel 9 ( +8) [ 49] Jason Wang 9 ( +1) [34] Breno Leitao 10 ( +3) [ 47] Jacob Keller 10 (+18) [33] Michal Swiatkowski Company rankings ---------------- Top reviewers (cs): Top reviewers (msg): 1 ( ) [41] RedHat 1 ( ) [106] RedHat 2 ( ) [30] Meta 2 ( ) [ 81] Meta 3 ( ) [17] Google 3 ( +1) [ 55] Google 4 ( +1) [16] Intel 4 ( +1) [ 43] Intel 5 ( +1) [11] nVidia 5 ( -2) [ 35] Andrew Lunn 6 ( -2) [10] Andrew Lunn 6 ( +1) [ 30] nVidia 7 ( ) [ 8] Linaro 7 ( -1) [ 18] Linaro Top authors (cs): Top authors (msg): 1 ( +2) [14] Intel 1 ( ) [86] Intel 2 ( -1) [13] RedHat 2 ( +1) [60] Google 3 ( +1) [12] Google 3 ( +2) [52] RedHat 4 ( -2) [10] Meta 4 ( ) [46] nVidia 5 ( ) [ 6] nVidia 5 ( -3) [45] Meta 6 (***) [ 4] Asbjørn Sloth Tønnesen 6 ( +1) [29] Alibaba 7 ( +3) [ 3] Amazon 7 (+16) [20] Linaro Top scores (positive): Top scores (negative): 1 ( ) [500] RedHat 1 ( +1) [86] Alibaba 2 ( ) [359] Meta 2 (+12) [65] Huawei 3 ( ) [176] Andrew Lunn 3 ( +5) [58] Intel 4 ( +1) [110] Google 4 (***) [55] Dent Project 5 ( +1) [ 70] Enfabrica 5 (+45) [44] Asbjørn Sloth Tønnesen 6 ( +1) [ 53] Oracle 6 ( -5) [38] Bootlin 7 ( -3) [ 47] Linaro -- Code: https://github.com/kuba-moo/ml-stat Raw output: https://netdev.bots.linux.dev/static/nipa/stats-6.10/stdout
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