Ticket #5353 (closed defect: duplicate)
Very long file load/save times in Windows 7 guest through vboxsvr
|Reported by:||Eric Carroll||Owned by:|
|Version:||VirtualBox 3.0.10||Keywords:||Windows 7 performance|
A save of a powerpoint 1.5MB file using smb takes under 3 sec. Saving the same file through vboxsvr takes up to 3 minutes.
Similarly load times are very long. Loading the same 1.5 MB ppt through vboxsvr takes over 30s, while smb is less than 4 sec.
tcpdump of wire during the load and save shows significant netbios traffic attempting to resolve vboxsvr. It also shows DNS lookups of vboxsvr. I have added vboxsvr to the hosts file without success so far.
Provider Order shows Virtualbox Shared Folders first in the list.
Disabling "Client for Microsoft Networks" and "File & Printer Sharing" did not cause the netbios lookups to go away.
Significant repeats in the vb log file of the following were found:
00:20:33.024 SharedFolders host service: request to unmap folder handle 0 00:20:33.024 SharedFolders host service: unmap operation result VINF_SUCCESS. 00:20:37.990 SharedFolders host service: request to map folder Home 00:20:37.990 SharedFolders host service: map operation result VINF_SUCCESS. 00:20:37.990 Mapped to handle 0.
Upgrading to 3.0.10 resolved the "no more files" problem but did not resolve the performance issue.
Guest: Windows 7
Host: 2.6.28-16-generic in Ubuntu 9.04
Network interface in bridged mode.
CPU: Intel T2600 @2.16 GHz (dual core i686)