x11perf performance drop when vesafb.ko loaded

TriggerHuang · 12-19-2011, 08:28 PM

Hi,
I just got a strange problem.
In order to make a boot splash, I loaded vesafb.ko by "modprobe vesafb" during the process of start.
After start x window, I run "x11perf -rect10", the output is as below:
800000 reps @ 0.0072 msec (138000.0/sec): 10x10 rectangle
800000 reps @ 0.0074 msec (135000.0/sec): 10x10 rectangle
But before I got 710000.0/sec without vesafb loaded.

So can anyone give me some suggestions? How to enable good performance with vesafb loaded? Thanks so much and in advance.

TriggerHuang · 12-19-2011, 08:31 PM

Quote:

Originally Posted by TriggerHuang

Hi,
I just got a strange problem.
In order to make a boot splash, I loaded vesafb.ko by "modprobe vesafb" during the process of start.
After start x window, I run "x11perf -rect10", the output is as below:
800000 reps @ 0.0072 msec (138000.0/sec): 10x10 rectangle
800000 reps @ 0.0074 msec (135000.0/sec): 10x10 rectangle
But before I got 710000.0/sec without vesafb loaded.

So can anyone give me some suggestions? How to enable good performance with vesafb loaded? Thanks so much and in advance.

Add, my system is UBUNTU10.04 LTS