[wdmaudiodev] Re: Driver performance logging

  • From: "Daniel E. Germann" <deg@xxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 23 Jun 2004 08:15:54 -0500

Hi, Ray.

I'm pretty sure the upper and lower bounds are in microseconds.  So, 3143 of
the 3166 DPCs (or 99.27% of the DPCs) processed by PortCls during the trace
took between 10 and 25 usec to complete, and none of them took less than 5
usec or more than 50 usec.

-Dan

----- Original Message ----- 
> Date: Tue, 22 Jun 2004 00:40:57 -0700 (PDT)
> From: R T
> Subject: [wdmaudiodev] Driver performance logging
>
> Hi,
>
> I'm new to this list and wondering if anybody here happened to look into
logging an audio driver's performance with relation to this link:
> http://www.microsoft.com/whdc/driver/perform/mmdrv.mspx
>
> Following the instruction there on using tracelog and tracerpt on WinXP
SP2, I managed to get a log, which I attached an extract of it.
>
> Can anyone point out to me how to intepret Lower Bound and Upper Bound? It
seems to me it is a range of time it takes for a certain process to
complete. Is it in terms of microsec, msec?
>
> Any insights would be appreciated. Thanks.
>
>
> Ray.
>
>
>
> ---------------------------------
> Do you Yahoo!?
> New and Improved Yahoo! Mail - 100MB free storage!
>
>
> -- Attached file included as plaintext by Ecartis --
> -- File: report.txt
> -- Desc: report.txt
>
>
+---------------------------------------------------------------------------
--------------+
> | Distribution of portcls.sys (F28A0945) DPC execution times for the whole
trace                                                    |
>
+---------------------------------------------------------------------------
--------------+
> | Lower Bound         Upper Bound            Count             Percent
|
>
+---------------------------------------------------------------------------
--------------+
> |           0                   1                0                0.00%
|
> |           1                   2                0                0.00%
|
> |           2                   3                0                0.00%
|
> |           3                   4                0                0.00%
|
> |           4                   5                0                0.00%
|
> |           5                  10                1                0.03%
|
> |          10                  25             3143               99.27%
|
> |          25                  50               22                0.69%
|
>
+---------------------------------------------------------------------------
--------------+
> |                                             3166              100.00%
|
>
+---------------------------------------------------------------------------
--------------+
>
>
> ------------------------------

******************

WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe:    mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe:  mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator:    mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx

URL to WDMAUDIODEV page:
http://www.wdmaudiodev.de/

Other related posts: