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Subject [GitHub] [incubator-openwhisk] sven-lange-last commented on issue #4553: Lower minimum number of available file descriptors in action limit tests
Date Wed, 10 Jul 2019 12:52:10 GMT
sven-lange-last commented on issue #4553: Lower minimum number of available file descriptors
in action limit tests
URL: https://github.com/apache/incubator-openwhisk/pull/4553#issuecomment-510047847
 
 
   Checking action container on local system with Docker 17.05.0-ce (via docker-machine)
   
   ```
   docker run --detach openwhisk/action-nodejs-v10:nightly
   Unable to find image 'openwhisk/action-nodejs-v10:nightly' locally
   nightly: Pulling from openwhisk/action-nodejs-v10
   c5e155d5a1d1: Pull complete
   221d80d00ae9: Pull complete
   4250b3117dca: Pull complete
   3b7ca19181b2: Pull complete
   425d7b2a5bcc: Pull complete
   69df12c70287: Pull complete
   ad53476a61f2: Pull complete
   204bb8bac4a1: Pull complete
   8c8a7afb62e3: Pull complete
   6df00f36fc9e: Pull complete
   198b0349d291: Pull complete
   86efe0c075fb: Pull complete
   0814374af6f9: Pull complete
   Digest: sha256:77cfbc0597e89fbd746764ee3bf394e44939f6aa4ae7710f3395714f09d23bfc
   Status: Downloaded newer image for openwhisk/action-nodejs-v10:nightly
   b8008aebfc2fe9308ed3fda7c73c19e8341b26e4327b6b7f5dfd036d35154ad8
   
   docker exec -it b8008aebfc2fe9308ed3fda7c73c19e8341b26e4327b6b7f5dfd036d35154ad8 /bin/sh
   # alias ll='ls -alF'
   # ps -ef
   UID        PID  PPID  C STIME TTY          TIME CMD
   root         1     0  0 10:51 ?        00:00:00 /bin/sh -c node --experimental-worker --expose-gc
app.js
   root         5     1  0 10:51 ?        00:00:00 node --experimental-worker --expose-gc
app.js
   root        12     0  0 10:51 ?        00:00:00 /bin/sh
   root        17    12  0 10:52 ?        00:00:00 ps -ef
   # cd /proc/1/fd
   # ll
   total 0
   dr-x------ 2 root root  0 Jul 10 10:51 ./
   dr-xr-xr-x 9 root root  0 Jul 10 10:51 ../
   lr-x------ 1 root root 64 Jul 10 10:51 0 -> pipe:[610672]
   l-wx------ 1 root root 64 Jul 10 10:51 1 -> pipe:[610673]
   l-wx------ 1 root root 64 Jul 10 10:51 2 -> pipe:[610674]
   # cd /proc/5/fd
   # ll
   total 0
   dr-x------ 2 root root  0 Jul 10 10:53 ./
   dr-xr-xr-x 9 root root  0 Jul 10 10:51 ../
   lr-x------ 1 root root 64 Jul 10 10:53 0 -> pipe:[610672]
   l-wx------ 1 root root 64 Jul 10 10:53 1 -> pipe:[610673]
   lr-x------ 1 root root 64 Jul 10 10:53 10 -> pipe:[610960]
   l-wx------ 1 root root 64 Jul 10 10:53 11 -> pipe:[610960]
   lrwx------ 1 root root 64 Jul 10 10:53 12 -> anon_inode:[eventfd]
   lrwx------ 1 root root 64 Jul 10 10:53 13 -> anon_inode:[eventpoll]
   lr-x------ 1 root root 64 Jul 10 10:53 14 -> pipe:[610961]
   l-wx------ 1 root root 64 Jul 10 10:53 15 -> pipe:[610961]
   lrwx------ 1 root root 64 Jul 10 10:53 16 -> anon_inode:[eventfd]
   lr-x------ 1 root root 64 Jul 10 10:53 17 -> /dev/null
   lrwx------ 1 root root 64 Jul 10 10:53 18 -> socket:[611200]
   l-wx------ 1 root root 64 Jul 10 10:53 2 -> pipe:[610674]
   lrwx------ 1 root root 64 Jul 10 10:53 3 -> anon_inode:[eventpoll]
   lr-x------ 1 root root 64 Jul 10 10:53 4 -> pipe:[610958]
   l-wx------ 1 root root 64 Jul 10 10:53 5 -> pipe:[610958]
   lr-x------ 1 root root 64 Jul 10 10:53 6 -> pipe:[610959]
   l-wx------ 1 root root 64 Jul 10 10:53 7 -> pipe:[610959]
   lrwx------ 1 root root 64 Jul 10 10:53 8 -> anon_inode:[eventfd]
   lrwx------ 1 root root 64 Jul 10 10:53 9 -> anon_inode:[eventpoll]
   ```
   
   In total, 19 file descriptors - PID 1 and 5 share 3 file descriptors.

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