VirtualBox

Ticket #5353 (closed defect: duplicate)

Opened 4 years ago

Last modified 4 years ago

Very long file load/save times in Windows 7 guest through vboxsvr

Reported by: Eric Carroll Owned by:
Priority: major Component: guest additions
Version: VirtualBox 3.0.10 Keywords: Windows 7 performance
Cc: Guest type: Windows
Host type: Linux

Description

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)

Attachments

load.dmp Download (14.8 KB) - added by Eric Carroll 4 years ago.
tcpdump trace during load
load.2.dmp Download (14.8 KB) - added by Eric Carroll 4 years ago.
tcpdump trace during load
save.dmp Download (78.0 KB) - added by Eric Carroll 4 years ago.
tcpdump during save
vbox-2009-10-30-17-27-17.log Download (59.7 KB) - added by Eric Carroll 4 years ago.
vbox log
vbox-2009-10-30-18-03-43.log Download (88.8 KB) - added by Eric Carroll 4 years ago.
winxp_load.dmp Download (8.7 KB) - added by Eric Carroll 4 years ago.
tcpdump of load in WinXPSP3
WINXP3-2009-10-30-18-33-09.log Download (49.0 KB) - added by Eric Carroll 4 years ago.

Change History

Changed 4 years ago by Eric Carroll

tcpdump trace during load

Changed 4 years ago by Eric Carroll

tcpdump trace during load

Changed 4 years ago by Eric Carroll

tcpdump during save

Changed 4 years ago by Eric Carroll

vbox log

Changed 4 years ago by Eric Carroll

comment:1 Changed 4 years ago by Eric Carroll

For calibration, WinXP SP3 VM with 3.0.10 guest additions: load time of 1.5 MB ppt is 16 sec, and does show netbios lookups (attached).

Changed 4 years ago by Eric Carroll

tcpdump of load in WinXPSP3

Changed 4 years ago by Eric Carroll

comment:2 Changed 4 years ago by sunlover

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

This is duplicate of #1728

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