January 2023
Beginner to intermediate
940 pages
15h 53m
Japanese
Content preview from 詳解 システム・パフォーマンス 第2版
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
付録Cbpftrace 1行プログラム
本付録は、便利なbpftrace 1行プログラム集である。実用に役立つだけでなく、bpftraceの学習にも役立つ。ほとんどのものは今までの章で示したものである。また、そのままの状態では動かないものが多い。特定のトレースポイントや関数、あるいはカーネルの特定のバージョン、構成を必要とするものも含まれている。
bpftraceの基礎知識については、15章の「15.2 bpftrace」を参照のこと。
C.1 CPU
引数付きで新プロセスをトレースする。
bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'
PID、プロセス名別にシステムコールの回数を数える。
bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[pid, comm] = count(); }'
システムコールプローブ名別にシステムコールの回数を数える。
bpftrace -e 'tracepoint:syscalls:sys_enter_* { @[probe] = count(); }'
実行中のプロセス名を99Hzでサンプリングする。
bpftrace -e 'profile:hz:99 { @[comm] = count(); }'
プロセス名付きでシステム全体のユーザー/カーネルスタックを49Hzでサンプリングする。
bpftrace -e 'profile:hz:49 { @[kstack, ustack, comm] = count(); }'
PID 189のユーザーレベルスタックを49Hzでサンプリングする。 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.