Wireshark · Wireshark-users: Re: [Wireshark-users] Slow database access

[John Hinckley <john@xxxxxxxxxxxxxxxx>]

Thanks Tal and Joan!  I'm pretty sure it has something to do with the tcp checksum errors but I'm going to keep digging.

Regards,
John

On Mon, Nov 23, 2009 at 3:54 PM, j.snelders <j.snelders@xxxxxxxxxx> wrote:

Hi,
 

Hopefully this information is useful:
Slow Network Write Speeds via SMB & CIFS
<snip>
File Transfer Benchmarks:
Windows XP to Windows Server (SMB Writing): ~ 25 Mbps
Windows XP to Windows Server (SMB Reading): ~ 75 Mbps
Windows 7 to Windows Server (SMB2 Writing): ~ 90 Mbps
Windows 7 to Windows Server (SMB2 Reading): ~ 90 Mbps
<snip>

http://social.technet.microsoft.com/Forums/en/winserverfiles/thread/46898c7f-92e0-4c99-98d2-18a7458a7d2d

Best regards
Joan



From: Tal Bar-Or <tbaror@xxxxxxxxx>

On Mon, 23 Nov 2009 23:43:53 +0200 Tal Bar-Or wrote:
just from first look it seems that your DB server is having some kind file
system delay (smb) 4 sec approx, although i saw it also  from client side
in the system part.

On Mon, Nov 23, 2009 at 8:47 AM, John Hinckley <john@xxxxxxxxxxxxxxxx> wrote:
   I'm not sure whether it was a windows update or a symantec update but
something caused my customer's pervasive database to start dragging.  I took
a capture from a workstation client and it only seems slow when retrieving
the data but once the data is retrieved, manipulating seems normal.  There
are 3-10 second delays in accessing tables etc.

   The workstation IP: 192.168.0.13 (windows xp pro sp3)
   Database Server IP: 192.168.0.3 (windows server 2008 standard)
   Application Name: Agris (pervasive database)

   I've completely disabled symantec on both the client and the server and
it hasn't made a bit of difference.  I'm having a hard time sifting through
the capture I took.  All I did was have the client login and access a report
during the capture.  Maybe 20 seconds tops.

   I've attached the capture file; if anyone can see anything useful, I
would appreciate you sharing it.

   TIA,
   John





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