如何增大UDP收包效率

参考文章

http://ref.onixs.biz/lost-multicast-packets-troubleshooting.html

Operating system kernel network buffers tuning

操作系统内核网络缓冲区调优

Linux

Run the sysctl -A | grep net | grep ‘mem\|backlog‘ | grep ‘udp_mem\|rmem_max\|max_backlog‘ command to check the current settings of the system level buffers.

For example:

Increase the maximum socket receive buffer size to 32MB: 

增加最大socket接收缓冲区大小为32MB：

sysctl -w net.core.rmem_max=33554432

Increase the maximum total buffer-space allocatable. This is measured in units of pages (4096 bytes): 

增加最大可分配的缓冲区空间总量,数值以页面为单位，每个页面单位等于4096 bytes：
sysctl -w net.ipv4.udp_mem="262144 327680 393216"

Note that net.ipv4.udp_mem works in pages, so to calculate the size in bytes multiply values by PAGE_SIZE, where PAGE_SIZE = 4096 (4K). Then the max udp_mem size in bytes is 385152 * 4096 = 1,577,582,592.

Increase the queue size for incoming packets: 

增加接收数据包队列大小：
sysctl -w net.core.netdev_max_backlog=2000

To apply the changes, run the sysctl -p command.

Check the new settings by running the sysctl -A | grep net | grep ‘mem\|backlog‘ | grep ‘udp_mem\|rmem_max\|max_backlog‘ command again.

如何增大UDP收包效率

原文：http://www.cnblogs.com/wedata/p/4975937.html