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This will require a new build of docker-1.5.0
with docker-1.5.0-20.el7, Fds seem to be in the range 13-15 and Goroutines are in 19-21 on my system. Don't seem to increase beyond that.
docker-1.5.0-26.el7.x86_64, both fd and Goroutine are stable.(no longer exceed 26 and 37 on my machine) #terminal 1 # while true; do docker run -it --rm rhel7 /bin/true ; done #terminal 2 #while true; do DEBUG=1 docker info; done Execution Driver: native-0.2 Kernel Version: 3.10.0-229.el7.x86_64 Operating System: Red Hat Enterprise Linux CPUs: 4 Total Memory: 7.116 GiB Name: timesu ID: PWNU:J2F2:JNI4:UMJT:JRIC:ATCH:IFOE:V3IT:4PYF:NTXE:4UPV:FPYV Debug mode (server): false Debug mode (client): true Fds: 21 Goroutines: 26 EventsListeners: 0 Init SHA1: 884881bd7d645736f30a7b1bc2055dffc3ccbf49 Init Path: /usr/libexec/docker/dockerinit Docker Root Dir: /var/lib/docker Containers: 13 Images: 18 Storage Driver: devicemapper Pool Name: docker-8:3-1076447624-pool Pool Blocksize: 65.54 kB Backing Filesystem: xfs Data file: Metadata file: Data Space Used: 4.115 GB Data Space Total: 107.4 GB Data Space Available: 103.3 GB Metadata Space Used: 4.153 MB Metadata Space Total: 2.147 GB Metadata Space Available: 2.143 GB Udev Sync Supported: true Library Version: 1.02.93-RHEL7 (2015-01-28)
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-0759.html