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Arnaldo Carvalho de Melo
@
acmel
Maceió, Brazil
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Linux perf tools maintainer, pahole for looking at your data structures in detail.
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3.351
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491
Pratim
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685
Osobe koje vas prate
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Arnaldo Carvalho de Melo
@acmel
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2 h |
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Help testing it is appreciated: bodhi.fedoraproject.org/updates/FEDORA…, took a while as there were some problems with 32-bit arches and with elfutils 0.178, all hopefully fixed.
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Arnaldo Carvalho de Melo
@acmel
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18 h |
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"It's in the Central Transdanubian region. It is the capital of Komárom-Esztergom County." wow! E há uma seção Etymology no artigo na Wikipedia: "Mina Pai" vindo de origens húngaras e eslovacas, ok, cultura inútil slot usado por hoje 8-)
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Arnaldo Carvalho de Melo
@acmel
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18 h |
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Bem, e o nome de um lugar, deve ter... /me googles...
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Arnaldo Carvalho de Melo
@acmel
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18 h |
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Isso me lembrou de uma das paradas do trem hoje: Tatábanya!
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Arnaldo Carvalho de Melo
@acmel
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19 h |
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For this specific case and a reasonable number of events, I think the TUI can cope, but yeah, having a nice GUI should be an option, it's a pity the GTK one fell into disrepair :-/
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Arnaldo Carvalho de Melo
@acmel
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19 h |
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Yeah, that's a limitation to fix, callgraphs are kept separately, only the first is shown afaik, that needs to be fixed, both should be shown somehow, even switching the main criteria should be possible....
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Arnaldo Carvalho de Melo
@acmel
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19 h |
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Also for labels, TUI screen space is limited, there's a description of what was recorded at the top that can serve as column descriptions, I think?
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Arnaldo Carvalho de Melo
@acmel
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19 h |
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Try with --no-children in report?
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Arnaldo Carvalho de Melo
@acmel
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19 h |
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You can use:
perf record -e '{cycles,instructions}:P'
perf report
And get a group view, i.e. two columns, one for each counter, i/c like in 'perf stat' isn't there yet, but should, at the bucketization criteria used :-/
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Arnaldo Carvalho de Melo
@acmel
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2. velj |
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On my way to Vienna, fedora soon will have a dwarves 1.16 rpm! #bpf #pahole #linux pic.twitter.com/GQlCQUt8iX
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Felipe Neto
@felipeneto
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31. sij |
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Honda nem chegou no Brasil ainda e já fala português melhor que o ministro da Educação. twitter.com/kskgroup2017/s…
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Arnaldo Carvalho de Melo
@acmel
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28. sij |
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ww.kernel.org/pub/linux/kern… available, go up in the dir tree and see how to build it, rpm/deb builds would be welcome? #perf #linux
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Arnaldo Carvalho de Melo
@acmel
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26. sij |
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@bristot and Juri Lelli teaching us about SCHED_DEADLINE, don't miss it! #devconfcz #linux pic.twitter.com/XQKmTTMoWr
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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Sure.
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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mutt
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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Jiří Olša showing what the magikal bpftrace scripts end up generating as BPF bytecode. #devconfcz #bpf pic.twitter.com/fHqbIQtEuB
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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Room E112: devconfcz2020a.sched.com/event/YOxQ/bpf…
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Arnaldo Carvalho de Melo
@acmel
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25. sij |
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If BPF is not the answer, BTF can help, current set of slides for my presentation tomorrow at 12:00: vger.kernel.org/~acme/bpf/devc… #devconf_cz #bpf #linux #pahole #perf
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Jim Gettys
@JimGettys
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22. sij |
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If you build network equipment and software, you should play attention. Sometimes the algorithms are useful in general software contexts as well. twitter.com/apnic/status/1…
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