Server 2008 dns.exe high memory consumption

Under the hood, dns.exe opens more than 5000 UDP ports during start up, 2500 for UDP IPv4, 2500 for UDP IPv6.  Large amount of kernel memory is also allocated for these ports.

Read config:
Dnscmd /Info /SocketPoolSize

Set config (not quite excessive output value of 10):
Dnscmd /Config /SocketPoolSize 10

After change, restart the DNS service.

One Comment

  1. Advanced, you will remove “Alternate DNS Server” from Internet Protocol Version 4(TCP/IPv4) Properties on your DNS servers/


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