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-510049023
 
 
   Checking a "real" action container on test system after having run the test 
action...
   
   ```
   # need to resume the action container first
   root@openwhisk:/run/docker/runtime-runc/moby# runc --root 
/run/docker/runtime-runc/moby resume 
551d85f1aba463d17bb799359822bd966d4e76faf57a5fd34ff57039cb464384
   
   user@openwhisk:~$ docker exec -it 551d85f1aba4 /bin/sh
   # ps -ef
   UID        PID  PPID  C STIME TTY          TIME CMD
   root         1     0  0 11:38 ?        00:00:00 /bin/sh -c node 
--experimental-w
   root         6     1  0 11:38 ?        00:00:00 node --experimental-worker 
--exp
   root        17     0  0 11:39 pts/0    00:00:00 /bin/sh
   root        22    17  0 11:44 pts/0    00:00:00 ps -ef
   # alias ll='ls -alF'
   # cd /proc/1/fd
   # ll
   total 0
   dr-x------ 2 root root  0 Jul 10 11:38 ./
   dr-xr-xr-x 9 root root  0 Jul 10 11:38 ../
   lrwx------ 1 root root 64 Jul 10 11:38 0 -> /dev/null
   l-wx------ 1 root root 64 Jul 10 11:38 1 -> pipe:[344150027]
   l-wx------ 1 root root 64 Jul 10 11:38 2 -> pipe:[344150028]
   # cd /proc/6/fd
   # ll
   total 0
   dr-x------ 2 root root  0 Jul 10 11:45 ./
   dr-xr-xr-x 9 root root  0 Jul 10 11:38 ../
   lrwx------ 1 root root 64 Jul 10 11:45 0 -> /dev/null
   l-wx------ 1 root root 64 Jul 10 11:45 1 -> pipe:[344150027]
   lr-x------ 1 root root 64 Jul 10 11:45 10 -> pipe:[344148457]
   l-wx------ 1 root root 64 Jul 10 11:45 11 -> pipe:[344148457]
   lrwx------ 1 root root 64 Jul 10 11:45 12 -> anon_inode:[eventfd]
   lrwx------ 1 root root 64 Jul 10 11:45 13 -> anon_inode:[eventpoll]
   lr-x------ 1 root root 64 Jul 10 11:45 14 -> pipe:[344147714]
   l-wx------ 1 root root 64 Jul 10 11:45 15 -> pipe:[344147714]
   lrwx------ 1 root root 64 Jul 10 11:45 16 -> anon_inode:[eventfd]
   lr-x------ 1 root root 64 Jul 10 11:45 17 -> /dev/null
   lrwx------ 1 root root 64 Jul 10 11:45 18 -> socket:[344147924]
   l-wx------ 1 root root 64 Jul 10 11:45 2 -> pipe:[344150028]
   lrwx------ 1 root root 64 Jul 10 11:45 3 -> anon_inode:[eventpoll]
   lr-x------ 1 root root 64 Jul 10 11:45 4 -> pipe:[344148455]
   l-wx------ 1 root root 64 Jul 10 11:45 5 -> pipe:[344148455]
   lr-x------ 1 root root 64 Jul 10 11:45 6 -> pipe:[344148456]
   l-wx------ 1 root root 64 Jul 10 11:45 7 -> pipe:[344148456]
   lrwx------ 1 root root 64 Jul 10 11:45 8 -> anon_inode:[eventfd]
   lrwx------ 1 root root 64 Jul 10 11:45 9 -> anon_inode:[eventpoll]
   # exit
   user@openwhisk:~$ docker logs 551d85f1aba4
   ERROR: opened files =  1003
   opened files =  1003
   XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX
   XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX
   ```

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