Re: Faster Start Up
Hello Chris,
Yes, I do agree that / docs do not look very
clear. We after different test ended up with configurations like this one
(${CATALINA_BASE}/conf/context.xml)
or this other one (${CATALINA_BASE}/conf/catalina.properties)
tomcat.util.scan.StandardJarScanFilter.jarsToSkip=*.*
for disabling completely the jar scanning.
Cheers,
Luis
ps: finally we decided to disable the jar scanning just for the jars that
we were adding ourselves in our custom tomcat image (keycloak for SSO,
jolokia for monitoring and some utilities). Our colleague Thomas added
below shell kung-fu to our Dockerfile
RUN jars_to_skip_in_tld_search=$(find ${CATALINA_BASE}/lib/* -printf "%f,")
\
&& line_number_of_beginning_of_skip_list=$(sed -n
'/tomcat.util.scan.StandardJarScanFilter.jarsToSkip=\\/='
${CATALINA_BASE}/conf/catalina.properties) \
&& comment_to_insert="# Note: The first line of the list (and this
comment) was inserted while\n# building the image to skip TLD scanning of
our own jars." \
&& sed -i
"${line_number_of_beginning_of_skip_list}a\\${jars_to_skip_in_tld_search}"
${CATALINA_BASE}/conf/catalina.properties \
&& sed -i
"${line_number_of_beginning_of_skip_list}i\\${comment_to_insert}"
${CATALINA_BASE}/conf/catalina.properties \
&& echo "Will skip jars: ${jars_to_skip_in_tld_search}"
pps: BTW: thanks Thomas, it works!
El mié., 15 jul. 2020 a las 18:51, Christopher Schultz (<
ch...@christopherschultz.net>) escribió:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> All,
>
> On 7/15/20 10:14, Christopher Schultz wrote:
> > Reading the documentation for / it
> > looks like maybe this would work:
> >
> >
> >
>
> With the above configuration, I still see this INFO log in my log file:
>
> INFO: At least one JAR was scanned for TLDs yet contained no TLDs.
> Enable debug logging for this logger for a complete list of JARs that
> were scanned but no TLDs were found in them. Skipping unneeded JARs
> during scanning can improve startup time and JSP compilation time.
>
> > Or maybe:
> >
> >
> >
>
> Looks like this gets the job done.
>
> I'm curious: why does tldScan="" not work?
>
> > If I specify one of the above, will the JAR scan still occur
> > (meaning, enumerate the list of JAR files and run through them) but
> > no JAR files will actually be opened? Or will the scanning process
> > be skipped entirely if the JarScanner sees that its configuration
> > implies it will never do any work?
>
> - -chris
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--
"Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better."
- Samuel Beckett
Re: Faster Start Up
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 All, On 7/15/20 10:14, Christopher Schultz wrote: > Reading the documentation for / it > looks like maybe this would work: > > > With the above configuration, I still see this INFO log in my log file: INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. > Or maybe: > > > Looks like this gets the job done. I'm curious: why does tldScan="" not work? > If I specify one of the above, will the JAR scan still occur > (meaning, enumerate the list of JAR files and run through them) but > no JAR files will actually be opened? Or will the scanning process > be skipped entirely if the JarScanner sees that its configuration > implies it will never do any work? - -chris -BEGIN PGP SIGNATURE- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl8PNBAACgkQHPApP6U8 pFhkkBAAl1MLW79GuyPRC8QP/ZeWwFJcpDL52JgS7NR/xulENkybpFtqCjzfXdzv w8jMKDN6AkcFzVo6oNnGkuMn4hUKSVHE8y44kMNW49YNGn7xSnqXt8iXDOUVkrqv kP1S82Yjc3UZxfQ8CZrGU/VV8qCwGgbRwbNLJp6VdS0tedJCku9MI1KpVu1tKCi0 uSV+39j6DRAnWgdnaCaxRPBROm0R7d5TB2fR+C/uzfxXnxaL+kihGp9hDlenbeFS JhQigxP2+U6o9J2GtDKSk2v2+yre01ZWDwPKG0SIU0hvZfIxo2mxjkt2Pze9P7yT UC8lNaZ/asL1PQW3+6rWep7Pp4XEYGz929HQdOZFhIoGpzPvVwDVFiJ22bib41SB +/oiRWoly2xwwBHN+U30SS2TMsqvBxvXZKb07riK7BeOB/Ep42Wh/LDFw5W0ZKRs jDW3to0JaqdcLkBftRKmdJT1zwn/3KcIVWcLioyx/lr+kQpykEfMCeeZ5BWonEWp OP86c6ofbwv32h5qkFT4DPRd8tNDFDI8S9UpNnGcmnTMDbJEkA5sIsdgx8AvOGwp 5CAr1ME6TeAmmx8yZsCHv2wSkNsuKEAggq5MOW7V3VdS37ChV8TBW86Kl3n2OXn/ T1s+P1RGg1T0nBUf7bA7zecUmD2urH/HYg/ncoysshA5XjjPQ7g= =hvr2 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Faster Start Up
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 All, I was looking at the "faster start up" wiki page[1] today and reading about ow to disable things that are not necessary in order to improve application startup times. While there seems to be lots of suggestions for what configuration options to look at, it's not actually clear how to use them. My application uses no annotations, no SCIs, no nothing, so I want to disable everything. It's not clear to me how to actually DO that. There /is/ a specific example for how to disable the WebSocket: * Add containerSciFilter="WsSci" to your There are also specific examples for disabling web.xml merging using metadata-complete="true" and in web.xml. But what about disabling all JAR scanning? Do the metadata-complete="true" and already accomplish that? Or do you need more? Reading the documentation for / it looks like maybe this would work: Or maybe: Or maybe a combination of the two? If I specify one of the above, will the JAR scan still occur (meaning, enumerate the list of JAR files and run through them) but no JAR files will actually be opened? Or will the scanning process be skipped entirely if the JarScanner sees that its configuration implies it will never do any work? Thanks, - -chris [1] https://cwiki.apache.org/confluence/display/TOMCAT/HowTo+FasterStart Up -BEGIN PGP SIGNATURE- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl8PDz4ACgkQHPApP6U8 pFiuDg/9HX6pgO0apfeNzvh0DO4pXNa64nH3g4l/se2SgmH316W2j9EuT6+rE4Kq nNEdDs06F/2P3kqSGfU6ZiyejIO/tVqjd79VMkfWtvdg1jKuMH3ZiVbb88SCSaKD QDdEMOdtsTh0YhctykQot/+xDHoC87MHuCwTAJag8BsAYUVr0b91RiuTv7wcuG77 mFOyBm1a2EBRo7nH9k961EcnkQyrLf9sdejVsLThUnTdI7UlP1onXql0xMIUyIc4 ilfHpwTilf6ZbKIHEQOJ14YSuwLdSI3Riwjwz3+lqE8FTCUFSKXR8Pg2s+WjztE4 lE/MOzc94cBOhjPTNhjOZLpAQkfXQAIXKA9VIO37sbvfAhoFzC6RyHFYKnAJqsNf J4+at3lgQvuyTXTJp82jQFHWoSR55KuIo/g5wMzK3FxsYziYhLDnGZ8Urh+A51L5 Rsaf0zvDUUvqwbWxqxZ/mHfXGnXHGebZPcExK0pVwZ1wj+Fy7kjULB1TNUrlHgRB Fzfnb/b5oROCRyk7EMFMo7m+r5Vvv41+3bd9rGX2iWHSkiFB0tQVlheegwAEKQFT o0GmDHQajBi6onJ/GMyKpU8KrsAuq//L7F3JiLXEC/TKJETRIrHuab3ALBQXbi9x IUqie1AwxjXG9I94GRxw/m+y8let5693aohccBlOp3w+WDWzSaQ= =kNk1 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
