[Samba] Samba just Slow with AutoCad?

[John Mazza]

I would try turning off the "Strict sync" option.  I would also test it with the oplock 
options disabled as well.


On Mon, 7 Jun 2004 08:59:34 -0600, Brian Merrell wrote:

>This is from 1998:
>
>"We've had serious performance problems loading AutoCAD R14 .dwg files from
>a
>VAResearch VArServer 3000 (dual 400MHz PII, Red Hat 5.0, SAMBA 1.9.17p4,
>256MB RAM, 36GB RAID5). The problem is that on first access, trying to read
>the .dwg file is very, very slow"
>
>This is from 1999:
>
>"A friend of mine just had a big problem with Samba, which we eventually
>solved. The problem was that NT clients did well on a copy in a command
>prompt, but were terribly slow when opening the same file in Autocad.
>
>(Compared to serving the file from an NT server).
>
>The solution was well hidden in dejanews and the Samba documentation
>somewhere; we had to set
>socket options = SO_SNDBUF=4096 SO_RCVBUF=4096"
>
>I have found a couple of other people complaining about performance with
>AutoCad.  I have tried the above fix, and I did not notice any difference
>whatsoever.  I have also tried generic speed fixes like this:
>http://www.dd.iij4u.or.jp/~okuyamak/Documents/tuning.english.html to no
>avail.
>
>This is very important to our company, and I may be forced to use a windows
>server if I cannot resolve this problem.  We had our files on a Windows XP
>machine (with worse hardware than we are using now) and it was running quite
>a bit faster than the Samba server we have now.  The speed problem, however,
>only seems to be with AutoCad.
>
>Here are some smb.conf's I have tried:
>(I have tried SO_SNDBUF=8192, and 4096)
>
>[global]
>
>workgroup = TRISTATE
>security = USER
>netbios name = SERVER
>encrypt passwords = Yes
>smb passwd file = /etc/samba/private/smbpasswd
>
>
>oplocks = true
>ole locking compatibility = no
>read prediction = true
>strict sync = yes
>
>socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=2920
>
>hosts allow = 127.0.0.1 10.0.0.0/24
>hosts deny = 0.0.0.0/0
>
>
>
>[Drawings]
>
>path = /fileservice/drawings
>writeable = Yes
>browseable = Yes
>read only = No
>guest ok = No
>comment = autocad related files and misc files
>valid users = drafter
>
>[Topowork]
>
>path = /fileservice/topowork
>writeable = Yes
>browseable = Yes
>read only = No
>guest ok = No
>comment = adobe related files
>valid users = drafter
>
>AND:
>
>[global]
>
>workgroup = TRISTATE
>security = USER
>netbios name = SERVER
>encrypt passwords = Yes
>smb passwd file = /etc/samba/private/smbpasswd
>
>[Drawings]
>
>path = /fileservice/drawings
>writeable = Yes
>browseable = Yes
>read only = No
>guest ok = No
>comment = autocad related files and misc files
>valid users = drafter
>
>[Topowork]
>
>path = /fileservice/topowork
>writeable = Yes
>browseable = Yes
>read only = No
>guest ok = No
>comment = adobe related files
>valid users = drafter
>
>
>
>Any help would be greatly appreciated.
>
>Brian Merrell
>
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