Windows "/dev/zero" device?

In order to do some network testing I’m looking for the Windows
equivalent of a Linux “/dev/zero” device.

/dev/zero is a device that returns all zeros when an application reads
the device. The idea is to nullify the effects of (say) disk I/O for
performance testing.

Does Windows have such a device/application available?

Thanks,
-PWM

How about the old “Test TCP” (TTCP) tool. It has its roots in Unix and there
are Windows implementations as well:

http://www.pcausa.com/Utilities/pcattcp.htm

I believe that there is a TTCP version from Microsoft as well.

Maybe some help…

Thomas F. Divine
http://www.pcausa.com


From: “Peter W. Morreale”
Sent: Friday, February 19, 2010 10:24 AM
To: “Windows System Software Devs Interest List”
Subject: [ntdev] Windows “/dev/zero” device?

>
> In order to do some network testing I’m looking for the Windows
> equivalent of a Linux “/dev/zero” device.
>
> /dev/zero is a device that returns all zeros when an application reads
> the device. The idea is to nullify the effects of (say) disk I/O for
> performance testing.
>
> Does Windows have such a device/application available?
>
> Thanks,
> -PWM
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer

On Fri, 2010-02-19 at 10:30 -0500, Thomas F. Divine wrote:

How about the old “Test TCP” (TTCP) tool. It has its roots in Unix and there
are Windows implementations as well:

http://www.pcausa.com/Utilities/pcattcp.htm

I believe that there is a TTCP version from Microsoft as well.

Maybe some help…

Thank you Thomas. Looks good however I do need to test against a Linux
box for lab logistical reasons.

However a colleague told me about netperf, which also has a windows
port. Hopefully this will work for me.

Thanks,
-PWM

Thomas F. Divine
http://www.pcausa.com


From: “Peter W. Morreale”
> Sent: Friday, February 19, 2010 10:24 AM
> To: “Windows System Software Devs Interest List”
> Subject: [ntdev] Windows “/dev/zero” device?
>
> >
> > In order to do some network testing I’m looking for the Windows
> > equivalent of a Linux “/dev/zero” device.
> >
> > /dev/zero is a device that returns all zeros when an application reads
> > the device. The idea is to nullify the effects of (say) disk I/O for
> > performance testing.
> >
> > Does Windows have such a device/application available?
> >
> > Thanks,
> > -PWM
> >
> >
> > —
> > NTDEV is sponsored by OSR
> >
> > For our schedule of WDF, WDM, debugging and other seminars visit:
> > http://www.osr.com/seminars
> >
> > To unsubscribe, visit the List Server section of OSR Online at
> > http://www.osronline.com/page.cfm?name=ListServer
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer

PCATTCP is a port of a Unix tool to Windows. I believe it retains
compatibility with the Unix counterparts.

So, I expect that with a little poking around you can find a Linux companion
tool.

I can sent the original Unix TTCP source to you if you can’t find a working
Linux copy.

Thomas F. Divine
http://www.pcausa.com


From: “Peter W. Morreale”
Sent: Friday, February 19, 2010 11:47 AM
To: “Windows System Software Devs Interest List”
Subject: Re: [ntdev] Windows “/dev/zero” device?

> On Fri, 2010-02-19 at 10:30 -0500, Thomas F. Divine wrote:
>> How about the old “Test TCP” (TTCP) tool. It has its roots in Unix and
>> there
>> are Windows implementations as well:
>>
>> http://www.pcausa.com/Utilities/pcattcp.htm
>>
>> I believe that there is a TTCP version from Microsoft as well.
>>
>> Maybe some help…
>>
>
> Thank you Thomas. Looks good however I do need to test against a Linux
> box for lab logistical reasons.
>
> However a colleague told me about netperf, which also has a windows
> port. Hopefully this will work for me.
>
> Thanks,
> -PWM
>
>
>> Thomas F. Divine
>> http://www.pcausa.com
>>
>> --------------------------------------------------
>> From: “Peter W. Morreale”
>> Sent: Friday, February 19, 2010 10:24 AM
>> To: “Windows System Software Devs Interest List”
>> Subject: [ntdev] Windows “/dev/zero” device?
>>
>> >
>> > In order to do some network testing I’m looking for the Windows
>> > equivalent of a Linux “/dev/zero” device.
>> >
>> > /dev/zero is a device that returns all zeros when an application reads
>> > the device. The idea is to nullify the effects of (say) disk I/O for
>> > performance testing.
>> >
>> > Does Windows have such a device/application available?
>> >
>> > Thanks,
>> > -PWM
>> >
>> >
>> > —
>> > NTDEV is sponsored by OSR
>> >
>> > For our schedule of WDF, WDM, debugging and other seminars visit:
>> > http://www.osr.com/seminars
>> >
>> > To unsubscribe, visit the List Server section of OSR Online at
>> > http://www.osronline.com/page.cfm?name=ListServer
>>
>>
>> —
>> NTDEV is sponsored by OSR
>>
>> For our schedule of WDF, WDM, debugging and other seminars visit:
>> http://www.osr.com/seminars
>>
>> To unsubscribe, visit the List Server section of OSR Online at
>> http://www.osronline.com/page.cfm?name=ListServer
>
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer