[Samba] Access97, in house VB6 app, terrible performance
abartlet at samba.org
Wed Jan 28 07:57:34 GMT 2004
On Wed, 2004-01-28 at 10:49, Tim Smith wrote:
> hello everyone I am running suse9.0 with samba 2.2.8 kernel 2.4.23, the
> app is in vb6 using the vb jetengine to access access97 databases,
> roughly 15 of them all between 200 - 900 megs in size, all on the same
> shared drive.
> This arrangement works well on our NT4 server. but when we try to use
> linux/samba we find read/writing is incrediably slow. as an example our
> standard test on NT4 takes 4 -5 seconds to run. Now, with 6 workstations
> connected under samba this test also takes 4 - 5 seconds, BUT as soon as
> the entire lab is connected which is roughly 30 - 40 pc's, that time
> jumps to 20 - 30 seconds.
> Now here is what we have tried:
> standard samba install, oplocks are at defaults. very very slow performance.
> we have also tried vetto oplocks, seemed to have no affect.
> after much fiddling with socket options, log levels and much reading on
> how oplocks work we discovered if "fake oplocks = yes" was set our
> performance issues vanished.
And so did all your database integrity!
What syntax were you using for 'veto oplock files'?
You could just turn off oplocks completely 'oplocks = no'.
Andrew Bartlett abartlet at pcug.org.au
Manager, Authentication Subsystems, Samba Team abartlet at samba.org
Student Network Administrator, Hawker College abartlet at hawkerc.net
http://samba.org http://build.samba.org http://hawkerc.net
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