Re: [WebDNA] online.db deadlock: your current options ...
This WebDNA talk-list message is from 2011
It keeps the original formatting.
numero = 106928
interpreted = N
texte = Yes, antivirus software on Windows is notorious for grabbing exclusive = file locks on large files, and even worse: the scan gets triggered every = time the file is modified. Turn off virus scanning for db files, because = those are not executables anyway. Also, best to wrap an [ExclusiveLock]...[/ExclusiveLock] around the = outside of all that visitor-counter code, because all it takes is two = visitors to hit the site simultaneously to cause the DB to deadlock. = You'll run into this on any multithreaded programming language. On Jul 11, 2011, at 4:01 PM, Stuart Tremain wrote: > I just had a though ..... it could be virus checking software that is = causing the problem ! >=20 > If you disallow the SW from accessing .db files that may solve the = problem. I must check my own configuration !!
Associated Messages, from the most recent to the oldest:
Yes, antivirus software on Windows is notorious for grabbing exclusive = file locks on large files, and even worse: the scan gets triggered every = time the file is modified. Turn off virus scanning for db files, because = those are not executables anyway. Also, best to wrap an
[exclusivelock]...[/ExclusiveLock] around the = outside of all that visitor-counter code, because all it takes is two = visitors to hit the site simultaneously to cause the DB to deadlock. = You'll run into this on any multithreaded programming language. On Jul 11, 2011, at 4:01 PM, Stuart Tremain wrote: > I just had a though ..... it could be virus checking software that is = causing the problem ! >=20 > If you disallow the SW from accessing .db files that may solve the = problem. I must check my own configuration !!
Grant Hulbert
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