Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1466661
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC PATCH v8 1/9] Restartable sequences system call |
| Date | 2016-08-19 22:30 +0200 |
| Message-ID | <s7YAp-1Rm-1@gated-at.bofh.it> (permalink) |
| References | <s7Yh4-1KJ-15@gated-at.bofh.it> <s7YqJ-1O3-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Aug 19, 2016 at 1:07 PM, Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> wrote:
>
> Benchmarking various approaches for reading the current CPU number:
So I'd like to see the benchmarks of something that actually *does* something.
IOW, what's the bigger-picture "this is what it actually is useful
for, and how it speeds things up".
Nobody gets a cpu number just to get a cpu number - it's not a useful
thing to benchmark. What does getcpu() so much that we care?
We've had tons of clever features that nobody actually uses, because
they aren't really portable enough. I'd like to be convinced that this
is actually going to be used by real applications.
Linus
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[RFC PATCH v8 0/9] Restartable sequences system call Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2016-08-19 22:20 +0200
[RFC PATCH v8 6/9] Restartable sequences: wire up x86 32/64 system call Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2016-08-19 22:20 +0200
[RFC PATCH v8 2/9] tracing: instrument restartable sequences Mathieu Desnoyers <mathieu.desnoyers@efficios.com> - 2016-08-19 22:20 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Linus Torvalds <torvalds@linux-foundation.org> - 2016-08-19 22:30 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Andi Kleen <andi@firstfloor.org> - 2016-08-19 23:00 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-08-19 23:20 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Linus Torvalds <torvalds@linux-foundation.org> - 2016-08-19 23:50 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-08-20 01:40 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Josh Triplett <josh@joshtriplett.org> - 2016-08-19 23:30 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Josh Triplett <josh@joshtriplett.org> - 2016-08-19 23:00 +0200
Re: [RFC PATCH v8 1/9] Restartable sequences system call Linus Torvalds <torvalds@linux-foundation.org> - 2016-08-19 23:20 +0200
csiph-web