This keeps getting worse, my site was down for over a minute while the TLD scanner ran. There must be something I can do.
- Matt -----Original Message----- From: Mark Thomas [mailto:ma...@apache.org] Sent: Saturday, April 29, 2017 5:02 AM To: Tomcat Users List <users@tomcat.apache.org> Subject: Re: Skip resource path in TLD scanner? On 28/04/17 17:00, Matt Cosentino wrote: > Yes, it's other folders within WEB-INF. I turned on the TldScanner > logging and it is definitely what is causing the delay. My situation > probably isn't very typical. The delay varies in my various web > applications, the worst being about 20 seconds. It all adds up though, > and every second counts when our sites are down. There is a solution available but it is intended more for the embedded use case rather than a standard Tomcat install. Using it in a standard install would require (effectively) patching Tomcat. The general idea would be to use the TldPreScanned class. That does require all the TLDs to be listed in advance. On the plus side, no scanning delay. On the down side, adding TLDs requires code changes. Doing this with a standard Tomcat install requires changes to the JasperInitializer (hence the patch). I don't think there is a pure config way around that but I'll look into it. A better solution would probably be to make it easier to plugin in a custom TLDScanner - i.e. purely with config. If you'd like us to explore this option we should re-open 61052 and adjust accordingly. I don't think there is enough demand for filtering resource paths to make that worth implementing. One final thought. Are you running the web application from a WAR or an expanded directory? (The latter would be faster). Mark > > - Matt > > > -----Original Message----- From: Mark Thomas [mailto:ma...@apache.org] > Sent: Friday, April 28, 2017 7:28 AM To: > Tomcat Users List <users@tomcat.apache.org> Subject: Re: Skip resource > path in TLD scanner? > > On 27/04/17 23:39, Matt Cosentino wrote: >> https://tomcat.apache.org/tomcat-8.0-doc/config/systemprops.html >> >> There is one for skipping jar files: >> >> tomcat.util.scan.StandardJarScanFilter.jarsToSkip > > <snip/> > >> It skips /WEB-INF/classes/ and /WEB-INF/lib/, but it does not check >> any property to skip user defined paths. > > Is it other paths within WEB-INF you need to skip? > > When I read "skipping resource paths" I was thinking of skipping the > various places where Tomcat treat directories as JARs that then get > scanned for TLDs (which can be configured via the JarScanner). But it > sounds like skipping those won't help you. > > How sure are you that it is checking the directories below WEB-INF > that is the cause of the delay? That isn't a typical source of > start-up delay although it is certainly possible. > > Finally, what sort of delay are we talking out here? Seconds? > Minutes? > > Mark > > >> -----Original Message----- From: Mark Thomas >> [mailto:ma...@apache.org] Sent: Thursday, April 27, 2017 5:05 PM >> To: Tomcat Users List <users@tomcat.apache.org> Subject: Re: Skip >> resource path in TLD scanner? >> >> On 27/04/17 21:17, Matt Cosentino wrote: >>> I need to skip some of the resource paths within WEB-INF. I know >>> there's a property for skipping jar files, but I couldn't find one >>> for resource paths. I reported this as a bug and was told that the >>> property exists. Where is it? >> >> Where have you looked? >> >> Mark > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
