lkml.org 
[lkml]   [2018]   [Nov]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH RFC 0/3] Static calls
On Mon, Nov 12, 2018 at 12:03:34PM -0500, Steven Rostedt wrote:
> On Sun, 11 Nov 2018 23:30:55 -0600
> Josh Poimboeuf <jpoimboe@redhat.com> wrote:
>
> > > How much of that slowdown is reversed?
> >
> > In theory, it should reverse all of the slowdown, and actually may even
> > speed it up a little. Steve is working on measuring that now.
>
> When I'm able to get it to work! Hopefully that last patch snippet you
> posted will help. If not, I'm assuming you'll be in Vancouver this
> week, and we could sit down and work it out.

Sure, I'm already in Vancouver. Just grab me if you see me, or ping me
on IRC/email. Or feel free to send me your patches if it's still giving
you trouble.

> That said, I don't expect a 100% improvement. Because the retpoline
> causes slow down in other areas than just tracing, which is not being
> fixed by this. I'm expecting a substantial improvement (which I see
> good improvement with the unoptimized static calls), and hoping for
> much more with the optimized one (when I get it working). But not 100%,
> as stated above.

Ah, ok. Makes sense.

--
Josh

\
 
 \ /
  Last update: 2018-11-12 23:57    [W:0.643 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site