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https://issues.apache.org/jira/browse/FTPSERVER-481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Brooker updated FTPSERVER-481:
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Description:
When loading the FTP server with 200 users that are downloading files via FTPS
in passive mode (implicit), the server eventually appears to run out of passive
ports. FTPD log shows numerous instances of "cannot find an available passive
port" (see txt attachment). While embedded, it appears the ftpd server also has
a memory leak (separate heap dump available upon request - file is too large to
attach)
Can be reproduced using JMeter with the attached testplan/ftps plugin in
roughly 35 minutes.
was:When loading the FTP server with 200 users that are downloading files via
FTPS in passive mode (implicit), the server eventually appears to run out of
passive ports. FTPD log shows numerous instances of "cannot find an available
passive port" (see txt attachment). While embedded, it appears the ftpd server
also has a memory leak (separate heap dump available upon request - file is too
large to attach)
> Artificially running out of passive ports under load
> ----------------------------------------------------
>
> Key: FTPSERVER-481
> URL: https://issues.apache.org/jira/browse/FTPSERVER-481
> Project: FtpServer
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.0
> Environment: Windows 2008R2 virtual machine with 4GB RAM, 4 CPU
> cores. Oracle Java 1.8.0_121. FTP server configured for 200 users and passive
> mode ports specified between 3000-3600.
> Reporter: David Brooker
> Attachments: ftpd-full.xml, ftpd_pp_leak_snip.txt, heap.zip,
> Jmeter_testplan.zip
>
>
> When loading the FTP server with 200 users that are downloading files via
> FTPS in passive mode (implicit), the server eventually appears to run out of
> passive ports. FTPD log shows numerous instances of "cannot find an available
> passive port" (see txt attachment). While embedded, it appears the ftpd
> server also has a memory leak (separate heap dump available upon request -
> file is too large to attach)
> Can be reproduced using JMeter with the attached testplan/ftps plugin in
> roughly 35 minutes.
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