redis Предупреждения после установки: WARNING: The TCP backlog setting of 511 cannot be enforced because

В ответ на команду (при установке):

sudo systemctl status redis

Я получил такие предупреждения:


# WARNING: The TCP backlog setting of 511 cannot be enforced because
 /proc/sys/net/core/somaxconn is set to the lower value of 128.

 # Server started, Redis version 3.2.8

 # WARNING overcommit_memory is set to 0! Background save may fail
 under low memory condition. To fix this issue add 'vm.overcommit_memory
 = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.

 # WARNING you have Transparent Huge Pages (THP) support enabled
 in your kernel. This will create latency and memory usage issues with Redis.
 To fix this issue run the command 'echo never 
> /sys/kernel/mm/transparent_hugepage/enabled' as root, 
and add it to your /etc/rc.local in order to retain the setting after a reboot. 
Redis must be restarted after THP is disabled.


 * The server is now ready to accept connections on port 6379

-- это не критичные предупреждения - не обязательно сразу же после установки (если вы работаете на локальном компьютере) а не сервере спешить исправлять их.

О том как их убрать см. тут: https://www.techandme.se/performance-tip...

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