we are having constant alerts and 50x errors due to high php-fpm child usage.
@Universal_Omega and I have looked and have no idea why this is happening or how to fix it. Restarts of services and reboots of servers aren't helping. When/if this stabilizes, this task will remain UBN as we really need to look into this.
Yes I have tried rebooting mw* which has absolutely no effect either. So yes +1 to this remaining UBN as resolving this should be #1 priority, but I am out of things I'm able to do here also.