bug #28940 [Process] Adds usleep(1000) to ease CPU usage. (miniyarov)
bug #28940 [Process] Adds usleep(1000) to ease CPU usage. (miniyarov)

This PR was squashed before being merged into the 4.2-dev branch (closes #28940).

Discussion
----------

[Process] Adds usleep(1000) to ease CPU usage.

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        | symfony/symfony-docs

Commits
-------

9d1416ad82 [Process] Adds usleep(1000) to ease CPU usage.

andrerom/symfony,Nyholm/symfony,arjenm/symfony,docteurklein/symfony,frankdejonge/symfony,deguif/symfony,Tobion/symfony,Simperfit/symfony,maidmaid/symfony,sgehrig/symfony,Taluu/symfony,yceruto/symfony,arjenm/symfony,OskarStark/symfony,smatyas/symfony,tucksaun/symfony,MatTheCat/symfony,ogizanagi/symfony,HeahDude/symfony,stof/symfony,andreia/symfony,nicolas-grekas/symfony,jvasseur/symfony,deguif/symfony,garak/symfony,jvasseur/symfony,Koc/symfony,Taluu/symfony,hhamon/symfony,maidmaid/symfony,derrabus/symfony,symfony/symfony,pierredup/symfony,docteurklein/symfony,lyrixx/symfony,pyrech/symfony,Tobion/symfony,ajgarlag/symfony,OskarStark/symfony,mweimerskirch/symfony,oleg-andreyev/symfony,docteurklein/symfony,mpdude/symfony,mweimerskirch/symfony,gnat42/symfony,damienalexandre/symfony,sgehrig/symfony,romaricdrigon/symfony,lyrixx/symfony,MatTheCat/symfony,paradajozsef/symfony,alekitto/symfony,Deamon/symfony,ragboyjr/symfony,alekitto/symfony,localheinz/symfony,stof/symfony,OskarStark/symfony,mpdude/symfony,zcodes/symfony,kbond/symfony,Simperfit/symfony,zerkms/symfony,stof/symfony,garak/symfony,gonzalovilaseca/symfony,smatyas/symfony,phramz/symfony,symfony/symfony,yceruto/symfony,joelwurtz/symfony,bendavies/symfony,jakzal/symfony,docteurklein/symfony,sroze/symfony,tucksaun/symfony,d-ph/symfony,ajgarlag/symfony,curry684/symfony,Deamon/symfony,symfony/symfony,stof/symfony,joelwurtz/symfony,ogizanagi/symfony,mpdude/symfony,shieldo/symfony,pyrech/symfony,andrerom/symfony,romaricdrigon/symfony,Tobion/symfony,yceruto/symfony,andrerom/symfony,tucksaun/symfony,d-ph/symfony,chalasr/symfony,lstrojny/symfony,paradajozsef/symfony,hhamon/symfony,teohhanhui/symfony,yceruto/symfony,ajgarlag/symfony,ragboyjr/symfony,voronkovich/symfony,sgehrig/symfony,damienalexandre/symfony,Tobion/symfony,lstrojny/symfony,joelwurtz/symfony,ragboyjr/symfony,1ed/symfony,smatyas/symfony,teohhanhui/symfony,frankdejonge/symfony,Simperfit/symfony,frankdejonge/symfony,jderusse/symfony,oleg-andreyev/symfony,mnapoli/symfony,sroze/symfony,vincentaubert/symfony,jderusse/symfony,Taluu/symfony,oleg-andreyev/symfony,zorn-v/symfony,ro0NL/symfony,bendavies/symfony,chalasr/symfony,symfony/symfony,mweimerskirch/symfony,oleg-andreyev/symfony,jderusse/symfony,hhamon/symfony,1ed/symfony,vincentaubert/symfony,localheinz/symfony,Koc/symfony,shieldo/symfony,zorn-v/symfony,Nyholm/symfony,xabbuh/symfony,maidmaid/symfony,pyrech/symfony,curry684/symfony,xabbuh/symfony,gnat42/symfony,jakzal/symfony,ogizanagi/symfony,kbond/symfony,mnapoli/symfony,zerkms/symfony,alekitto/symfony,zorn-v/symfony,voronkovich/symfony,voronkovich/symfony,jvasseur/symfony,derrabus/symfony,vincentaubert/symfony,localheinz/symfony,bendavies/symfony,zorn-v/symfony,Taluu/symfony,Slamdunk/symfony,andrerom/symfony,zerkms/symfony,mweimerskirch/symfony,jvasseur/symfony,fabpot/symfony,Nyholm/symfony,zcodes/symfony,gnat42/symfony,fabpot/symfony,derrabus/symfony,smatyas/symfony,ro0NL/symfony,Simperfit/symfony,sroze/symfony,jakzal/symfony,tgalopin/symfony,Slamdunk/symfony,dmaicher/symfony,paradajozsef/symfony,alekitto/symfony,d-ph/symfony,joelwurtz/symfony,docteurklein/symfony,deguif/symfony,sroze/symfony,derrabus/symfony,ragboyjr/symfony,lyrixx/symfony,mnapoli/symfony,dmaicher/symfony,fabpot/symfony,chalasr/symfony,curry684/symfony,Slamdunk/symfony,kbond/symfony,romaricdrigon/symfony,gonzalovilaseca/symfony,garak/symfony,1ed/symfony,phramz/symfony,zcodes/symfony,damienalexandre/symfony,dmaicher/symfony,dmaicher/symfony,HeahDude/symfony,paradajozsef/symfony,Nyholm/symfony,gonzalovilaseca/symfony,arjenm/symfony,teohhanhui/symfony,damienalexandre/symfony,ro0NL/symfony,HeahDude/symfony,voronkovich/symfony,teohhanhui/symfony,ro0NL/symfony,deguif/symfony,phramz/symfony,1ed/symfony,mweimerskirch/symfony,bendavies/symfony,tgalopin/symfony,fabpot/symfony,xabbuh/symfony,HeahDude/symfony,gnat42/symfony,xabbuh/symfony,ajgarlag/symfony,mnapoli/symfony,hhamon/symfony,zerkms/symfony,Deamon/symfony,mnapoli/symfony,Simperfit/symfony,localheinz/symfony,tgalopin/symfony,Deamon/symfony,Koc/symfony,nicolas-grekas/symfony,gonzalovilaseca/symfony,curry684/symfony,kbond/symfony,nicolas-grekas/symfony,Deamon/symfony,pyrech/symfony,pierredup/symfony,smatyas/symfony,tgalopin/symfony,shieldo/symfony,zcodes/symfony,lstrojny/symfony,frankdejonge/symfony,maidmaid/symfony,chalasr/symfony,jderusse/symfony,tucksaun/symfony,andreia/symfony,pierredup/symfony,lyrixx/symfony,arjenm/symfony,andreia/symfony,d-ph/symfony,Slamdunk/symfony,romaricdrigon/symfony,OskarStark/symfony,MatTheCat/symfony,shieldo/symfony,pierredup/symfony,andreia/symfony,MatTheCat/symfony,vincentaubert/symfony,jakzal/symfony,nicolas-grekas/symfony,garak/symfony,ogizanagi/symfony,mpdude/symfony,Koc/symfony,sgehrig/symfony,phramz/symfony