Re: [GIT PULL] kdbus for 4.1-rc1
[Posted April 29, 2015 by corbet]
| From: |
| Andy Lutomirski <luto-AT-amacapital.net> |
| To: |
| Linus Torvalds <torvalds-AT-linux-foundation.org> |
| Subject: |
| Re: [GIT PULL] kdbus for 4.1-rc1 |
| Date: |
| Mon, 27 Apr 2015 14:40:02 -0700 |
| Message-ID: |
| <CALCETrW+erTbMBHnN5zv_noP38Gznm4E0U7qk+uxOvM+a=NvCg@mail.gmail.com> |
| Cc: |
| Lukasz Skalski <l.skalski-AT-samsung.com>, Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Andrew Morton <akpm-AT-linux-foundation.org>, Arnd Bergmann <arnd-AT-arndb.de>, "Eric W. Biederman" <ebiederm-AT-xmission.com>, One Thousand Gnomes <gnomes-AT-lxorguk.ukuu.org.uk>, Tom Gundersen <teg-AT-jklm.no>, Jiri Kosina <jkosina-AT-suse.cz>, "linux-kernel-AT-vger.kernel.org" <linux-kernel-AT-vger.kernel.org>, Daniel Mack <daniel-AT-zonque.org>, David Herrmann <dh.herrmann-AT-gmail.com>, Djalal Harouni <tixxdz-AT-opendz.org> |
| Archive‑link: | |
Article |
On Mon, Apr 27, 2015 at 2:32 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Fri, Apr 24, 2015 at 6:50 AM, Lukasz Skalski <l.skalski@samsung.com> wrote:
>>
>> To perform tests I've created two simple apps:
>>
>> - server: http://fpaste.org/215157/
>> - client: http://fpaste.org/215156/
>
> So since Andy reported that dbus seems to be a few orders of magnitude
> too slow, I tried to build these apps to see what it even does.
>
> They don't buidl on F21. You seem to be using features that are too
> new to exist even in fairly modern distros:
>
> server.c:47:24: error: ‘G_BUS_TYPE_USER’ undeclared
>
> so I can't even see what dbus does *now*.
Change "USER" to "SESSION". Build with:
gcc -Wall -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -o
client client.c -lglib-2.0 -ldbus-glib-1 -ldbus-1 -lgobject-2.0
-lglib-2.0 -ldbus-1 -lgio-2.0
The again with s/client/server/
For all I know, the USER vs SESSION distinction matters, but I can't
imagine why.
>
> That said, either you're running your test on a potato, or dbus is
> seriously screwed up. No way should it take 4+ seconds to send a 1000b
> message to back and forth 20k times. But as mentioned, I can't even
> see what it's doing right now.
Whee! I'm typing this email on a potato!
--Andy
