linux-kernel - Re: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS]

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Date:	Sat, 21 Apr 2007 13:29:41 +0200
From:	Björn Steinbrink <B.Steinbrink@....de>
To:	Willy Tarreau <w@....eu>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS]

Hi,

On 2007.04.21 13:07:48 +0200, Willy Tarreau wrote:
> > another thing i noticed: when using a -y larger then 1, then the window 
> > title (at least on Metacity) overlaps and thus the ocbench tasks have 
> > different X overhead and get scheduled a bit assymetrically as well. Is 
> > there any way to start them up title-less perhaps?
> 
> It has annoyed me a bit too, but I'm no X developer at all, so I don't
> know at all if it's possible nor how to do this. I know that my window
> manager even adds title bars to xeyes, so I'm not sure we can do this.
> 
> Right now, I've added a "-B <border size>" argument so that you can
> skip the size of your title bar. It's dirty but it's not my main job :-)

Here's a small patch that makes the windows unmanaged, which also causes
ocbench to start up quite a bit faster on my box with larger number of
windows, so it probably avoids some window manager overhead, which is a
nice side-effect.

Björn

--

diff -u ocbench-0.4/ocbench.c ocbench-0.4.1/ocbench.c
--- ocbench-0.4/ocbench.c	2007-04-21 13:05:55.000000000 +0200
+++ ocbench-0.4.1/ocbench.c	2007-04-21 13:24:01.000000000 +0200
@@ -213,6 +213,7 @@
 int main(int argc, char *argv[]) {
   Window root;
   XGCValues gc_setup;
+  XSetWindowAttributes swa;
   int c, index, proc_x, proc_y, pid;
   int *pcount[] = {&HOUR, &MIN, &SEC};
   char *p, *q;
@@ -342,8 +343,11 @@
   alloc_color(fg, &orange);
   alloc_color(fg2, &blue);
 
-  win = XCreateSimpleWindow(dpy, root, X, Y, width, height, 0, 
-  			    black.pixel, black.pixel);
+  swa.override_redirect = 1;
+
+  win = XCreateWindow(dpy, root, X, Y, width, height, 0,
+  			    CopyFromParent, InputOutput, CopyFromParent,
+  			    CWOverrideRedirect, &swa);
   XStoreName(dpy, win, "ocbench");
 
   XSelectInput(dpy, win, ExposureMask | StructureNotifyMask);
Only in ocbench-0.4.1/: .README.swp
-
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