X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=src%2Fexa%2Fi965%2Fsynchronous_composite.mdwn;h=9c55f739ce8037b51b7911c052b4ae1c0fe0cf6a;hb=5c014fe14d7a114dc525711d3236feb10f27177f;hp=6f2684015c3ce2104eeb5e3bd7b48caed8716821;hpb=382a50b3aa2fc58cbeaa1a9974939b67d1ccd5f1;p=cworth.org
diff --git a/src/exa/i965/synchronous_composite.mdwn b/src/exa/i965/synchronous_composite.mdwn
index 6f26840..9c55f73 100644
--- a/src/exa/i965/synchronous_composite.mdwn
+++ b/src/exa/i965/synchronous_composite.mdwn
@@ -1,6 +1,6 @@
-[[meta title="Synchronous compositing in the i965 driver"]]
+[[!meta title="Synchronous compositing in the i965 driver"]]
-[[tag exa performance xorg]]
+[[!tag exa performance xorg]]
A couple of weeks ago I aired [[my_confusion|avoiding_rmw]] about a
situation in which using EXA with an i965 card was 4 times slower than
@@ -66,7 +66,7 @@ following for me.
vmlinux 16%
libxul 11%
libexa 6%
- pixman 5%
+ pixman 5%
Xorg 4%
other 9%
@@ -103,7 +103,7 @@ software fallbacks at all. Here's what I got:
intel_drv 22%
libc 16%
libxul 13%
- pixman 9%
+ pixman 9%
libexa 4%
Xorg 4%
other 9%
@@ -132,7 +132,7 @@ So, now take a look at the performance with this patch attached:
intel_drv 49%
libxul 16%
libc 10%
- pixman 7%
+ pixman 7%
libexa 4%
Xorg 2%
vmlinux 2%
@@ -150,9 +150,9 @@ saved from libc and the kernel.
What's going on here? What's happening is that the driver is spending
an awful lot of time busy-waiting, and all we did here was to help it
-busy-wait even faster. Now, we know that aren't any software fallbacks
-happening here, so what's all the waiting about? It appears to be
-caused primarily by `i965_prepare_composite` which includes the
+busy-wait even faster. Now, we know that there aren't any software
+fallbacks happening here, so what's all the waiting about? It appears
+to be caused primarily by `i965_prepare_composite` which includes the
following comment and code:
/* Because we only have a single static buffer for our state currently,