Hi, We run JFrog Artifactory which is fronted by Tomcat 8.0.32. We recently upgraded from Tomcat 7.0.56. Since the upgrade, Artifactory occasionally slows to a crawl.
We could reproduce this problem by downloading a large (1GB) file concurrently from 500 different machines. However, to avoid exceeding the network bandwidth, we throttled the downloads at 100KB per second. While these 500 requests were being processed, we sent a request to download a smaller file (1MB, no throttling). The smaller download successfully went through several times, then got “stuck”. The download speed was reduced to a few KB per second. We couldn’t reproduce this problem on 7.0.56. We kept 8.0.32 but changed the connector to BIO and couldn’t reproduce it either. We suspect that it has something to do with switching from BIO in 7.0.56 to NIO in 8.0.32. Has anyone run into this problem before? Server.xml, a thread dump and Catalina MBean values are attached. Tomcat version: Server version: Apache Tomcat/8.0.32 Server built: Feb 2 2016 19:34:53 UTC Server number: 8.0.32.0 OS Name: Linux OS Version: 2.6.32-504.el6.x86_64 Architecture: amd64 JVM Version: 1.8.0_72-b15 JVM Vendor: Oracle Corporation Thank you, Thuc Nguyen
tomcat.tar.gz
Description: tomcat.tar.gz
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