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DoubleJ333
Contributor
Contributor
‎10-07-2009 01:24 PM

Copying to a network share extremely slow

Randomly I am getting extremely slow network performance when copying a file from my VM to a network share. If I test with a 100MB file, if its working fine it takes 5s, if its not 45 minutes. If I uninstall VMWare tools and reboot the VM twice, then reinstall and reboot it works, but then randomly it will stop working on a subsequent reboot. Anyone have any suggestions? I just switched over from Parallels 4.0 because of the true dual monitor support, I don't really want to go back but I can't work with a 300 baud network connection.

Specs:

OSX Snow Leopard 10.6.1

Fusion 2.0.6

VM - Vista 64bit SP1 (network adapter is bridged)

I check the logs and its filled with this, looks like it is network related:

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: expectations not satisfied

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: vlan: 0

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: ipc: en 1, start 14, len 242, off 24

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: tuc: en 1, start 0, len 0, off 16

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: tso: hlen 0, mss 1380, paylen 5574

Oct 07 13:11:42.124: vcpu-1| NetPkt: TxOffload: tso: ipv4 1, tcp 1

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3 Replies
admin
Immortal
Immortal
‎10-08-2009 02:06 PM

We're not suggesting this as a workaround, but would like to know if it prevents the problem:

  1. In the guest, go to Network and Internet > View Network Status and Tasks

  2. On the left, click Manage Network Connection

  3. Find the relevant network interface, right click the interface and select Properties

  4. From the networking tab, click Configure

  5. Choose the Advanced tab

  6. Select Large Send Offload (IPv4)

  7. In the value field, choose Disable and click OK

DoubleJ333
Contributor
Contributor
‎10-12-2009 07:56 AM

Thanks for the suggestion, it seems to have fixed the problem after the adapter reauthenticated. I rebooted and it still seems to be working. After that reboot, for a test I switched it back and the problem reappeared..so for the time being I guess I will leave it off for now.

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MBPJHawk
Contributor
Contributor
‎06-07-2012 09:26 AM

I tried the following before trying your suggestion:

1) Turned off the Windows Firewall...no effect...still 20kb/sec transfer

2) Manually reinstalled the VMware tools

3) Able to copy to the same 40MB file from the Mac side to the Network share in under 5 seconds...

4) Switched back to Fusion 4.x running Windows 7 - tried copying over....back to 20kb/sec transfer rate (time to go get lunch)

5) Followed your steps below...copied in under 5 seconds

(Yes - I shut off WiFi and used a direct Ethernet connection running in "Bridged" mode for all tests)

So this solution works for me as well.

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