Ticket #3875 (closed defect: invalid)

Opened 9 years ago

Last modified 9 years ago

NAT: SendQueue is too small

Reported by: myce Owned by:
Priority: major Component: network/NAT
Version: VirtualBox 2.2.0 Keywords:
Cc: Guest type: Windows
Host type: Windows


When the guest produces heavy network traffic, the log file shows several errors of this kind: 02:14:52.307 NAT: 64 messages suppressed about dropping package (couldn't allocate queue item)

This suggest that the size of the queue is too small for heavy traffic. The queue is currently allocated to 50 entries in line 821 of root/trunk/src/VBox/Devices/Network/DrvNAT.cpp

I'd suggest to double the size of the queue or, even better, to make it configurable.

Change History

comment:1 Changed 9 years ago by frank

Do you get messages about dropped network packets?

comment:2 Changed 9 years ago by Hachiman

  • Status changed from new to closed
  • Resolution set to invalid

Allocating too many packets and late sending will cause too many retransmissions that will dramatically decrease network throughput.

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