Re: [ANN] bpf development stats for 6.5

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On Tue, Jul 18, 2023 at 7:29 PM Yafang Shao <laoar.shao@xxxxxxxxx> wrote:
>
> On Wed, Jul 19, 2023 at 8:18 AM Alexei Starovoitov
> <alexei.starovoitov@xxxxxxxxx> wrote:
> >
> > On Wed, Jun 28, 2023 at 11:32 AM Stanislav Fomichev <sdf@xxxxxxxxxx> wrote:
> > >
> > > Same as last time, running Jakub's scripts against bpf tree, see netdev
> > > posting for more info on the methodology:
> > > https://lore.kernel.org/netdev/20230627163832.75f3a340@xxxxxxxxxx/T/#u
> > >
> > > He also shared with me bpf stats for the previous cycle (a lot of
> > > work went into the scripts in these past two months, so my data
> > > was completely irrelevant), so we can have some comparisons!
> > >
> > > As last time, I'm presenting raw stats without any evaluation. I'm
> > > also trying to present the same data as we have in netdev email
> > > so you can follow Jakub's comments about script changes/etc. One thing
> > > to note maybe is that we have a lot of cross-pollination with netdev list,
> > > so our stats change quite a bit depending on netdev activity :-)
> > >
> > > Previous cycle:
> > > 21 Feb to 26 Apr: 5362 mailing list messages, 64 days, 86 messages per day
> > > 438 repo commits (7 commits/day)
> > >
> > > Current cycle:
> > > 27 Apr to 28 Jun: 4234 mailing list messages, 62 days, 68 messages per day
> > > 664 repo commits (11 commits/day)
> > >
> > > 6.4 stats: https://lore.kernel.org/bpf/ZFAOojsT93ZxwNu3@xxxxxxxxxx/
> > >
> > > Rankings
> > > --------
> > >
> > > Top reviewers (thr):                 Top reviewers (msg):
> > >    1 (+13) [7] Yonghong Song            1 ( +1) [16] Andrii Nakryiko
> > >    2 ( -1) [7] Alexei Starovoitov       2 ( -1) [15] Alexei Starovoitov
> > >    3 ( -1) [6] Andrii Nakryiko          3 (+17) [13] Yonghong Song
> > >    4 ( +1) [4] Daniel Borkmann          4 (***) [ 5] David Hildenbrand
> > >    5 ( +3) [3] Jiri Olsa                5 (+11) [ 5] Jiri Olsa
> > >    6 (+14) [3] Simon Horman             6 ( +3) [ 5] Daniel Borkmann
> > >    7 ( -4) [2] Stanislav Fomichev       7 ( -4) [ 5] Stanislav Fomichev
> > >    8 ( -4) [2] Martin KaFai Lau         8 (***) [ 5] Song Liu
> > >    9 ( -3) [2] Jakub Kicinski           9 (+21) [ 4] Steven Rostedt
> > >   10 (+32) [2] Steven Rostedt          10 ( -6) [ 4] Martin KaFai Lau
> > >   11 ( +5) [2] Toke Høiland-Jørgensen   11 (+15) [ 4] Simon Horman
> > >   12 ( -3) [2] Quentin Monnet          12 ( -2) [ 4] Toke Høiland-Jørgensen
> > >
> > > Top authors (thr):                   Top authors (msg):
> > >    1 (   ) [2] Andrii Nakryiko          1 (   ) [14] Andrii Nakryiko
> > >    2 (+11) [2] Yafang Shao              2 ( +4) [11] Yafang Shao
> > >    3 (+36) [1] Aditi Ghag               3 (***) [10] Maciej Fijalkowski
> > >    4 (+14) [1] Jiri Olsa                4 (+27) [ 9] Masami Hiramatsu (Google)
> > >    5 (+40) [1] Stanislav Fomichev       5 ( +2) [ 6] John Fastabend
> > >    6 ( +3) [1] Eduard Zingerman         6 ( +5) [ 6] Jiri Olsa
> > >    7 (***) [1] Masami Hiramatsu (Google)    7 (+40) [ 6] Stanislav Fomichev
> > >    8 (***) [1] Menglong Dong            8 (***) [ 5] Ian Rogers
> > >    9 ( +1) [1] Daniel Borkmann          9 ( -1) [ 5] Alexei Starovoitov
> > >   10 ( +6) [1] Yonghong Song           10 ( -5) [ 4] Eduard Zingerman
> > >
> > > Company rankings
> > > ----------------
> > >
> > > Top reviewers (thr):                 Top reviewers (msg):
> > >    1 (   ) [17] Meta                    1 (   ) [50] Meta
> > >    2 (   ) [ 7] Isovalent               2 ( +3) [19] RedHat
> > >    3 ( +1) [ 5] Google                  3 (   ) [13] Isovalent
> > >    4 ( +1) [ 5] RedHat                  4 ( -2) [11] Google
> > >    5 ( -2) [ 3] Intel                   5 ( -1) [ 6] Intel
> > >    6 ( +5) [ 3] Corigine                6 ( +8) [ 4] Corigine
> > >    7 ( +6) [ 1] Microsoft               7 ( +2) [ 4] nVidia
> > >
> > > Top authors (thr):                   Top authors (msg):
> > >    1 (   ) [7] Meta                     1 (   ) [28] Meta
> > >    2 (   ) [6] Isovalent                2 ( +3) [24] Google
> > >    3 ( +2) [5] Google                   3 ( -1) [23] Isovalent
> > >    4 ( -1) [2] RedHat                   4 ( +3) [18] Intel
> > >    5 ( +1) [2] Huawei                   5 ( +3) [11] Yafang Shao
> > >    6 ( -2) [2] Intel                    6 ( +3) [ 6] Huawei
> > >    7 ( +6) [2] Yafang Shao              7 ( -3) [ 6] Alibaba
> > >    8 (***) [1] nVidia                   8 ( -5) [ 4] RedHat
> > >    9 ( +2) [1] Eduard Zingerman         9 ( -3) [ 4] Eduard Zingerman
> > >
> > > Yafang/Eduard, if you'd like to share you company with me, feel free
> > > to drop a private email.
> > >
> > > New formula rankings
> > > --------------------
> > >
> > > Top scores (positive):               Top scores (negative):
> > >    1 (   ) [156] Meta                   1 ( +2) [38] Yafang Shao
> > >    2 ( +3) [ 68] RedHat                 2 (***) [25] Intel
> > >    3 ( +5) [ 35] Corigine               3 (***) [25] Google
> > >    4 (+11) [ 15] IBM                    4 ( -3) [20] Alibaba
> > >    5 (+34) [ 13] Microsoft              5 (***) [14] Menglong Dong
> > >    6 ( +1) [ 10] nVidia                 6 (***) [11] Oracle
> > >    7 (***) [  9] Linux Foundation       7 (***) [10] Mike Rapoport
> > >    8 (***) [  8] Kent Overstreet        8 ( -4) [10] Bytedance
> > >    9 ( +8) [  8] Amazon                 9 ( +5) [ 8] Lorenzo Stoakes
> > >   10 (+11) [  7] Christoph Hellwig     10 ( +3) [ 7] Gilad Sever
> > >   11 ( +2) [  7] SUSE                  11 (***) [ 7] Tessares
> > >   12 (+10) [  7] CloudFlare            12 (***) [ 7] Eduard Zingerman
> > >
> > > How top authors rank in scores:
> > >   1   p0 [155]  Meta
> > >   2  p97 [-25]  Google
> > >   3   p8 [  6]  Isovalent
> > >   4  p98 [-26]  Intel
> > >   5  p99 [-39]  Yafang Shao <laoar.shao@xxxxxxxxx>
> > >   6  p89 [ -7]  Huawei
> > >   7  p96 [-21]  Alibaba
> > >   8   p0 [ 68]  RedHat
> > >   9  p90 [ -7]  Eduard Zingerman <eddyz87@xxxxxxxxx>
> > >  10  p96 [-15]  Menglong Dong <menglong8.dong@xxxxxxxxx>
> > >  11  p95 [-11]  Oracle
> > >  12  p94 [-11]  Mike Rapoport <rppt@xxxxxxxxxx>
> > >  13  p93 [-10]  Bytedance
> > >  14   p3 [ 10]  nVidia
> > >  15  p91 [ -7]  Tessares
> >
> >
> > Thank you Stanislav for running the stats. Much appreciate it.
> >
> > The folks with negative scores please work on improving them.
> > Negative score == takers, not givers.
> > The community is healthy when people give and take.
> > For every patch sent please take time to review somebody else's patch.
> >
> > https://nesslabs.com/taker-giver-matcher
>
> I thought it is the reviewer's responsibility to review :)
> Now I understand it, I will take time to help review.
> Thanks for your reminder.

For BPF CORE we have 4 maintainers and 7 official reviewers.
bpf mailing list receives ~70 emails a day.
bpf development can scale only when people who actively develop
are also actively reviewing code.
M and R entries in MAINTAINERS file is a recognition of the prior efforts.
Not much more. We need to trim it and remove people who are no longer active.





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