-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Ayub,
On 6/20/20 11:51, Ayub Khan wrote: > Sorry we are using 8.0.32 version of tomcat. > > below is the configuration: > > Server version: Apache Tomcat/8.0.32 (Ubuntu) Server built: Jan > 24 2020 16:24:30 UTC Server number: 8.0.32.0 OS Name: > Linux OS Version: 4.4.0-1087-aws Architecture: amd64 JVM > Version: 1.8.0_181-b13 JVM Vendor: Oracle Corporation > > I use the below command to check the file descriptors: > > watch "sudo ls /proc/`cat /var/run/tomcat8.pid`/fd/ | wc -l" So you know there is some kind of increase in file-handle use, but you don't know what types of file handles are increasing, right? Can you try to find out which kinds of file handles are increasing? I have a sneaking suspicion that it's your database connections and not actually files open on the disk. Are you using a database connection pool? If not, you should really use one and limit the number of connections to something sane. If you are using one, are you monitoring it to see how many connections are actually being used? Are you sure you are using proper resource management[1]? Even a single code-path that leaks connections can leak them quickly under load. > When there an issue related to broken files, this value keeps > increasing, the only way to bring it down is to remove vm instance > from AWS load balancer.> Which version of tomcat should I install > ? Tomcat 8.0.x hasn't been supported since its last release on 29 June 2018. That was 8.0.53. Your release is from 8 February 2016 and is dangerously out of date (unless you are using the Ubuntu-packaged version, in which case I hope they kept-up with security patches thee past 4 years). - -chris > On Sat, Jun 20, 2020 at 6:28 PM Christopher Schultz < > ch...@christopherschultz.net> wrote: > > Ayub, > > On 6/19/20 16:46, Ayub Khan wrote: >>>> tomcat 8.5 broken pipe increases open files on ubuntu AWS > > Which exact version of Tomcat 8.5? If you aren't running the > latest version (8.5.56), please upgrade and re-test. > >>>> If there is slow response from db I see this stack trace and >>>> the open files goes high and the only way to open files go >>>> down is to remove the instance from Amazon load balancer. >>>> >>>> Is there a way to keep the open files low even when Broken >>>> pipe error is thrown ? > > What is your evidence that file handles are being left open? > > Which file handles are being left open? > > -chris >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl7vlj0ACgkQHPApP6U8 pFiCqBAAqDO2+sUHpjcL8c5qwQbc0EG1XjgawI/ggjegVNSLTZ6mjdCVmxU3V10T IAdAmckT+o5qkZKQSVAQHpNW7i5A21U0dOUF1r1EWq0WZIN3fE1dcpQVsOlvUSqD qZ+gnGzg3UasSMJFyOj2hnU1+PBnhSFWvKcHwTda9gelqmgHp24rwpCvHFFFmH+2 I/QrHoQc1W9F0bUmGOsfBy5+eC981KMUfZrIJmUBQFOhopaD19W+yofZCl0S15E7 dxfIcqvFSF7FzZ1FraKGVd+nEUlW6PLuNqHkqpNGIstMWuQuo1RkukdXeP3FqjeA 36W5GOo6tlJTPGjbGaVPLnKw+hQuQa9he5Dv4E03C9vk1cbU6g+3hguKGhIfV3FM 2Pg4SE4LwVv3LMY1uxuuHGPgrs6CqHmMaDA6FQARhm/5iD5WJQBrXwzCYztHK/Z+ +QILfdBa1VZl9qyujBneY9oJ9yc7HeBb1DDZAAqZFrOJctRmDrdZQrUwZ+b6vUzL kBr7fCSnzEqUbPzv5DiY6qfD2x2f1GfJFLY6LuJ36g4P0YSItRTaR2nX/VOzVM9D oZsDFZhlSZa0U7KpdaQDpi1dw6wgW83gfc7GxrbYvQsgXZPnm25JeU/UI5p1O+cQ q+iynFZ8poxSOIjx+2A9anwCXAiiWbyVRJ6Rmy2NwkCbXH/VhwY= =oNTV -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
