{"action":"reopened","issue":{"url":"https://api.github.com/repos/moby/moby/issues/37732","repository_url":"https://api.github.com/repos/moby/moby","labels_url":"https://api.github.com/repos/moby/moby/issues/37732/labels{/name}","comments_url":"https://api.github.com/repos/moby/moby/issues/37732/comments","events_url":"https://api.github.com/repos/moby/moby/issues/37732/events","html_url":"https://github.com/moby/moby/issues/37732","id":355209623,"node_id":"MDU6SXNzdWUzNTUyMDk2MjM=","number":37732,"title":"FFmpeg transcoding hangs when multiple containers inside the host server","user":{"login":"hugogameiro","id":2203024,"node_id":"MDQ6VXNlcjIyMDMwMjQ=","avatar_url":"https://avatars3.githubusercontent.com/u/2203024?v=4","gravatar_id":"","url":"https://api.github.com/users/hugogameiro","html_url":"https://github.com/hugogameiro","followers_url":"https://api.github.com/users/hugogameiro/followers","following_url":"https://api.github.com/users/hugogameiro/following{/other_user}","gists_url":"https://api.github.com/users/hugogameiro/gists{/gist_id}","starred_url":"https://api.github.com/users/hugogameiro/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hugogameiro/subscriptions","organizations_url":"https://api.github.com/users/hugogameiro/orgs","repos_url":"https://api.github.com/users/hugogameiro/repos","events_url":"https://api.github.com/users/hugogameiro/events{/privacy}","received_events_url":"https://api.github.com/users/hugogameiro/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-08-29T15:15:43Z","updated_at":"2018-11-27T01:36:17Z","closed_at":null,"author_association":"NONE","body":"**Description**\r\n\r\nWhen installing multiple instances of [Mastodon](https://hub.docker.com/r/tootsuite/mastodon/) using docker-compose, after 48 installs (each by default starts 3 containers) the 49th will always cause FFmpeg to hang when transcoding.\r\n\r\n**Steps to reproduce the issue:**\r\n\r\n1. Install 48 Mastodon instances on the same server and test uploading a gif\r\n2. Install one more (49) and try uploading the gif now (it will fail)\r\n\r\n**Describe the results you received:**\r\n\r\nWhenever the 49th install is done transcode hangs on this step:\r\n`[AV] Running command: ffmpeg -i \"/tmp/8d777f385d3dfec8815d20f7496026dc20180817-8-1lii7j9\" -acodec aac -strict experimental -movflags faststart -pix_fmt yuv420p -vf scale='trunc(iw/2)*2:trunc(ih/2)*2' -vsync cfr -c:v h264 -b:v 500K -maxrate 1300K -bufsize 1300K -crf 18 -y \"/tmp/8d777f385d3dfec8815d20f7496026dc20180817-8-1lii7j920180817-8-9xckl0.mp4\"`\r\n\r\n**Describe the results you expected:**\r\n\r\nThat it would work like it does when 48 instances of Mastodon are installed.\r\n\r\n**Additional information you deem important (e.g. issue happens only occasionally):**\r\n\r\nI have tried it in several servers, even clean installed one with a different Kernel to test. All tests done with Debian 9.4, non Swarn.\r\n\r\n**Output of `docker version`:**\r\n\r\n```\r\nClient:\r\n Version:           18.06.1-ce\r\n API version:       1.38\r\n Go version:        go1.10.3\r\n Git commit:        e68fc7a\r\n Built:             Tue Aug 21 17:23:18 2018\r\n OS/Arch:           linux/amd64\r\n Experimental:      false\r\n\r\nServer:\r\n Engine:\r\n  Version:          18.06.1-ce\r\n  API version:      1.38 (minimum version 1.12)\r\n  Go version:       go1.10.3\r\n  Git commit:       e68fc7a\r\n  Built:            Tue Aug 21 17:22:21 2018\r\n  OS/Arch:          linux/amd64\r\n  Experimental:     false\r\n```\r\n\r\n**Output of `docker info`:**\r\n\r\n```\r\nContainers: 138\r\n Running: 138\r\n Paused: 0\r\n Stopped: 0\r\nImages: 1\r\nServer Version: 18.06.1-ce\r\nStorage Driver: overlay2\r\n Backing Filesystem: extfs\r\n Supports d_type: true\r\n Native Overlay Diff: true\r\nLogging Driver: json-file\r\nCgroup Driver: cgroupfs\r\nPlugins:\r\n Volume: local\r\n Network: bridge host macvlan null overlay\r\n Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog\r\nSwarm: inactive\r\nRuntimes: runc\r\nDefault Runtime: runc\r\nInit Binary: docker-init\r\ncontainerd version: 468a545b9edcd5932818eb9de8e72413e616e86e\r\nrunc version: 69663f0bd4b60df09991c08812a60108003fa340\r\ninit version: fec3683\r\nSecurity Options:\r\n seccomp\r\n  Profile: default\r\nKernel Version: 4.9.124-xxxx-std-ipv6-64\r\nOperating System: Debian GNU/Linux 9 (stretch)\r\nOSType: linux\r\nArchitecture: x86_64\r\nCPUs: 8\r\nTotal Memory: 62.88GiB\r\nName: REDACTED\r\nID: REDACTED\r\nDocker Root Dir: REDACTED\r\nDebug Mode (client): false\r\nDebug Mode (server): false\r\nRegistry: https://index.docker.io/v1/\r\nLabels:\r\nExperimental: false\r\nInsecure Registries:\r\n 127.0.0.0/8\r\nLive Restore Enabled: true\r\n\r\nWARNING: No cpu cfs quota support\r\nWARNING: No cpu cfs period support\r\n```\r\n\r\n**Additional environment details (AWS, VirtualBox, physical, etc.):**\r\n\r\nBare Metal\r\nIntel  Xeon D-1520\r\n64GB DDR4 ECC 2133 MHz\r\n2x480GB SSD SoftRaid"}}
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