Redis报错解决The TCP backlog setting of 511 cannot be enforced和This will create latency and memory usage

最新推荐文章于 2025-07-18 11:26:17 发布

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最新推荐文章于 2025-07-18 11:26:17 发布 · 2.5k 阅读

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在尝试启动Redis时遇到错误提示'The TCP backlog setting of 511 cannot be enforced'和'This will create latency and memory usage'。为解决问题，需遵循推荐的配置调整。

在启动Redis的时候报错如下：

16426:M 04 May 10:30:43.721 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128

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Redis启动WARNING: The TCP backlog setting of 511 cannot be enforced

进击的小白

11-04

6191

现象新安装的redis启动时，出现警告日志 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 initialized WARNING overcommit_memory is set to 0! Background save may fail under low memory

redis启动后的警告问题

weixin_40482816的博客

09-02

5525

如果我们什么都不修改，redis启动时会有三个警告警告1 ： WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128 解释：上面写的很清晰，意思是配置 /proc/sys/net/core/somaxconn的值是128，虽然redis.conf中配置的是511，但是linux内核会以无提示的

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Ang Ga Ga 2020.12.26
我改了还是报这个错误是怎么回事啊QAQ 。

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[gpp@goldpanpan src]$ 25342:C 14 Nov 11:08:48.118 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo 25342:C 14 Nov 11:08:48.118 # Redis version=4.0.11, bits=64, commit=00000000, modified=0, pid=25342, ...

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警告1 ： WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128 解释：上面写的很清晰，意思是配置 /proc/sys/net/core/somaxconn的值是128，虽然redis.conf中配置的是511，但是linux内核会以无提示的方式将其截断为128。在一个高并发的环境下，128是远远不...

Docker启动Redis容器时报错WARNING: The TCP backlog setting of 511 cannot be enforced

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下意识得修改了宿主机的 /proc/sys/net/core/somaxconn 文件。发现并没有什么卵用。考虑是镜像内的文件，于是修改创建容器命令为。发现容器并没有启动，于是查看了一下logs。docker ps 查看解决问题了。

The TCP backlog setting of 511 cannot be enforced

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06-28

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redis启动报如下警告： 14523:M 24 Jun 15:24:53.267 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 14523:M 24 Jun 15:24:53.2...

7238:M 07 Mar 2025 10:17:16.326 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is s et to the lower value of 128.7238:M 07 Mar 2025 10:17:16.326 # Server initialized 7238:M 07 Mar 2025 10:17:16.326 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix t his 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.7238:M 07 Mar 2025 10:17:16.326 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create laten cy 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.7238:M 07 Mar 2025 10:17:16.326 * Ready to accept connections

03-08

This will create latency and memory usage issues with Redis. ``` #### **原因** - THP 是 Linux 内核的内存管理功能，但会导致 Redis 的内存碎片化和延迟升高。 - Redis 建议禁用 THP 以优化性能。 #### **...

09-18

解决 ‘The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128’ 问题此问题是因为系统的 `somaxconn` 参数值小于Redis期望的TCP backlog值...

3:M 14 Oct 15:19:54.878 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 3453:M 14 Oct 15:19:54.878 # Server started, Redis version 3.2.12 3453:M 14 Oct 15:19:54.878 # 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. 3453:M 14 Oct 15:19:54.879 # 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. 3453:M 14 Oct 15:19:54.879 * DB loaded from disk: 0.000 seconds 3453:M 14 Oct 15:19:54.879 * The server is now ready to accept connections on port 6379 3453:signal-handler (1760426425) Received SIGINT scheduling shutdown... 3453:M 14 Oct 15:20:25.662 # User requested shutdown... 3453:M 14 Oct 15:20:25.663 * Saving the final RDB snapshot before exiting. 3453:M 14 Oct 15:20:25.670 * DB saved on disk 3453:M 14 Oct 15:20:25.670 * Removing the pid file. 3453:M 14 Oct 15:20:25.671 # Redis is now ready to exit, bye bye... 4067:M 14 Oct 15:22:38.599 * Increased maximum number of open files to 10032 (it was originally set to 1024). _._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 3.2.12 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in standalone mode |`-._`-...-` __...-.``-._|'` _.-'| Port: 6379 | `-._ `._ / _.-' | PID: 4067 `-._ `-._ `

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