TCP Performance Tuning for ceph

最新推荐文章于 2025-12-07 21:28:46 发布

转载最新推荐文章于 2025-12-07 21:28:46 发布 · 170 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：https://www.spinics.net/lists/ceph-devel/msg21721.html

文章标签：

#tcp/ip #网络 #服务器 #云计算

ceph 专栏收录该内容

6 篇文章

订阅专栏

这篇博客介绍了如何调整Linux系统的TCP缓冲区大小、优化网络连接参数，包括增大内存限制、设置TIME_WAIT套接字数量、增加最大连接数等，以提升服务器性能和应对高并发连接。

Increase Linux autotuning TCP buffer limits
Set max to 16MB for 1GE and 32M (33554432) or 54M (56623104) for 10GE

Don't set tcp_mem itself! Let the kernel scale it based on RAM.
net.core.rmem_max = 56623104
net.core.wmem_max = 56623104
net.core.rmem_default = 56623104
net.core.wmem_default = 56623104
net.core.optmem_max = 40960
net.ipv4.tcp_rmem = 4096 87380 56623104
net.ipv4.tcp_wmem = 4096 65536 56623104

Make room for more TIME_WAIT sockets due to more clients,
and allow them to be reused if we run out of sockets

Also increase the max packet backlog
net.core.somaxconn = 1024
net.core.netdev_max_backlog = 50000
net.ipv4.tcp_max_syn_backlog = 30000
net.ipv4.tcp_max_tw_buckets = 2000000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 10

Disable TCP slow start on idle connections
net.ipv4.tcp_slow_start_after_idle = 0

If your servers talk UDP, also up these limits
net.ipv4.udp_rmem_min = 8192
net.ipv4.udp_wmem_min = 8192

Disable source routing and redirects
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0