Tracker item #3602723, was opened at 2013-01-30 15:23
Message generated for change (Settings changed) made by dkoudela
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Category: kernel modules
Group: None
Status: Open
Resolution: None
>Priority: 7
Private: No
Submitted By: David Koudela (dkoudela)
Assigned to: Nobody/Anonymous (nobody)
Summary: Slower vmhgfs when upgraded from 7.3 to 9.0.1

Initial Comment:
Host OS: Windows 7
VM OS: Fedora 13
VM framework: VWare Workstation 7.3 and 9.0.1

After upgrade our VM workstation from 7.3 to 9.0.1, we realized that shared 
storage fs (vmhgfs) is dramatically slower than in previous version.
After an exploration, we found out that it is caused by new version VMtools.

Example: File copy on a system with VMtools from VMware Workstation 7.3
$ dd bs=1024 count=102400 if=/dev/zero of=/mnt/hgfs/webdev/randfile.bin; time 
cp /mnt/hgfs/webdev/randfile.bin /mnt/hgfs/webdev/randfile.bin.tmp; rm -f 
/mnt/hgfs/webdev/randfile.bin.tmp
102400+0 records in
102400+0 records out
104857600 bytes (105 MB) copied, 2.25995 s, 46.4 MB/s

real    0m2.789s
user    0m0.001s
sys     0m2.785s

After VMtools upgrade (VMware 9.0.1):
$ dd bs=1024 count=102400 if=/dev/zero of=/mnt/hgfs/webdev/randfile.bin; time 
cp /mnt/hgfs/webdev/randfile.bin /mnt/hgfs/webdev/randfile.bin.tmp; rm -f 
/mnt/hgfs/webdev/randfile.bin.tmp
102400+0 records in
102400+0 records out
104857600 bytes (105 MB) copied, 24.2573 s, 4.3 MB/s

real    0m4.428s
user    0m0.000s
sys     0m4.425s

The duration is 1.5x longer than before. In case of multiple files and several 
kinds of operations, it is even worse.
Compilation of our product takes 5min on VMtools 7.3 but it requires 25min on 
VMtools 9.0.3
This means it is 5x slower.
Could you please fix this performance issue?
Thanks.

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