Date: Tue, 2 Dec 2025 13:45:01 +0100 From: Paul Floyd <paulf2718@gmail.com> To: Freebsd hackers list <freebsd-hackers@freebsd.org> Subject: Re: Process Profiling Message-ID: <E54E2BDB-ECE0-40D4-A624-7CFE8750131F@gmail.com> In-Reply-To: <CA%2BaGpV8SF6kMyZcepyq_RqWuvUXGB4RH_MjC53ww-sjGCPuWQw@mail.gmail.com> References: <CAD2_vGqforjTNbqUF-_gXrxWkuFAiP5Q7ZZn7p42AZfOmiV9wA@mail.gmail.com> <CA%2BaGpV8SF6kMyZcepyq_RqWuvUXGB4RH_MjC53ww-sjGCPuWQw@mail.gmail.com>
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[-- Attachment #1 --] > On 2 Dec 2025, at 12:35, Athanasios Kostopoulos <athanasioskostopoulos@gmail.com> wrote: > > dtrace can help. I give you a wiki article > > https://wiki.freebsd.org/DTrace > IMO Dtrace is very limited as to what it can trace performance-wise. No PMC and not much more than callgraph profiling that I’m aware of. If you do make the effort to instrument your code with SDTs then that would help a lot. A+ Paul [-- Attachment #2 --] <html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br><div><blockquote type="cite"><div>On 2 Dec 2025, at 12:35, Athanasios Kostopoulos <athanasioskostopoulos@gmail.com> wrote:</div><br class="Apple-interchange-newline"><div><div dir="auto">dtrace can help. I give you a wiki article </div><div dir="auto"><br></div><div dir="auto"><div><a href="https://wiki.freebsd.org/DTrace">https://wiki.freebsd.org/DTrace</a></div><br></div></div></blockquote><br></div><div>IMO Dtrace is very limited as to what it can trace performance-wise.</div><div><br></div><div>No PMC and not much more than callgraph profiling that I’m aware of.</div><div><br></div><div>If you do make the effort to instrument your code with SDTs then that would help a lot.</div><div><br></div><div><br></div><div>A+</div><div>Paul</div><div><br></div><br></body></html>
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