Driver Performace between "Kernel mode" and "Module mode"

From: Perry Wu (d905626_at_oz.nthu.edu.tw)
Date: 10/18/04 

Date: Mon, 18 Oct 2004 17:45:36 +0800

Hi all,

I have a strange problem describes as follows:

I have wrote a network device driver and
tried to test its performance by using Smartbit.

The driver performance is 18 Mbps when I use "insmod driver.o".
But it is 22 Mbps when I use this driver as "built-in kernel driver".

Why the performance result between "Module" and "Kernel" is different?

Does this result reasonable?

I need your suggestions. Thank you!

Regards,
Perry.

Relevant Pages

  • Re: Memory allocation problem with 2.6.22 after suspend/resume cycle
    ... I'm having a strange problem, ... Are you using an ATI binary graphics driver? ... can't wait for the open source drivers. ...
    (Linux-Kernel)
  • Re: WriteFile( ) function. Error
    ... I am writing a format application where i found a strange problem. ... Now if i am running the same application second time, ... So i guess it is because of the driver. ...
    (microsoft.public.development.device.drivers)
  • Re: Asus P4P800-E Deluxe Ethernet Controller
    ... > I have a very strange problem ... ... the Marvell Yukon 1Gbps onboard ... > This is the third system I have built with exactly the same motherboard ... > tried the driver CDs from those other two motherboards (the version ...
    (alt.comp.hardware.pc-homebuilt)
  • Video Drivers for VPC7/W2000
    ... I am running into a strange problem. ... When using Microsoft Publisher ... I can find the nVidia W2000 driver to download, ... Is there a way to upgrade the video divers? ...
    (microsoft.public.mac.virtualpc)
  • WriteFile( ) function. Error
    ... I am writing a format application where i found a strange problem. ... I have to write some data in last 512 bytes of partition. ... Now if i am running the same application second time, ... So i guess it is because of the driver. ...
    (microsoft.public.development.device.drivers)