De-ciphering Netstat

NTDEV
1

Hello,

I’m doing performance test on my driver. At 24 Mbps the multicast UDP
packets I deliver to the app start dropping. Netstat shows those dropped
packets has Receive Errors in UDP. There are no errors reported at the IP
level.

Can anyone give me an hint on, under what circumstances does UDP drop
packets as errors other than incorrect Checksum…
Can data alignment/packing cause a drop…

Thanks
Daniel

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2

I think that UDP can drop packets because of flow control, when the user
doesn’t read the messages fast enough and the input queue reaches it’s high
water mark.

Sara

----- Original Message -----
From: “Daniel Pradeep”
To: “NT Developers Interest List”
Sent: Thursday, April 26, 2001 11:04 AM
Subject: [ntdev] De-ciphering Netstat

> Hello,
>
> I’m doing performance test on my driver. At 24 Mbps the multicast UDP
> packets I deliver to the app start dropping. Netstat shows those dropped
> packets has Receive Errors in UDP. There are no errors reported at the IP
> level.
>
> Can anyone give me an hint on, under what circumstances does UDP drop
> packets as errors other than incorrect Checksum…
> Can data alignment/packing cause a drop…
>
> Thanks
> Daniel
>
> —
> You are currently subscribed to ntdev as: xxxxx@veritas.com
> To unsubscribe send a blank email to leave-ntdev-$subst(‘Recip.MemberIDChar’)@lists.osr.com
>

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3

Thanks. Thats what was happening…

Daniel

-----Original Message-----
From: Sara Abraham [mailto:xxxxx@veritas.com]
Sent: Thursday, April 26, 2001 7:17 PM
To: NT Developers Interest List
Subject: [ntdev] Re: De-ciphering Netstat

I think that UDP can drop packets because of flow control, when the user
doesn’t read the messages fast enough and the input queue reaches it’s high
water mark.

Sara

----- Original Message -----
From: “Daniel Pradeep”
To: “NT Developers Interest List”
Sent: Thursday, April 26, 2001 11:04 AM
Subject: [ntdev] De-ciphering Netstat

> Hello,
>
> I’m doing performance test on my driver. At 24 Mbps the multicast UDP
> packets I deliver to the app start dropping. Netstat shows those dropped
> packets has Receive Errors in UDP. There are no errors reported at the IP
> level.
>
> Can anyone give me an hint on, under what circumstances does UDP drop
> packets as errors other than incorrect Checksum…
> Can data alignment/packing cause a drop…
>
> Thanks
> Daniel
>
> —
> You are currently subscribed to ntdev as: xxxxx@veritas.com
> To unsubscribe send a blank email to leave-ntdev-$subst(‘Recip.MemberIDChar’)@lists.osr.com
>

—
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