[dns-operations] Truncation query

[Tony Finch]

Florian Weimer <fweimer at redhat.com> wrote:
>
> I"m going to use MSG_PEEK and MSG_TRUNC to get an accurate size from the
> kernel and allocate a suitable sized buffer using malloc.  But that's probably
> not a good choice for high-performance servers.

Is there any reason not to allocate a 64KB buffer when the resolver
context is initialized, and let the kernel donate pages to the buffer
if/when that becomes necessary?

Tony.
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