[nsd-users] NSD 4.1.18rc1 pre-release

Anand Buddhdev anandb at ripe.net
Thu Nov 16 11:09:27 UTC 2017


On 16/11/2017 12:00, W.C.A. Wijngaards wrote:

Hi Wouter,

> Packed structures are more difficult to access by the compiler.  It is
> likely that the compiler needs to generate more code to access members
> in the data structure.  The assumption that data is aligned in memory is
> not there.  The compiler will generate different code.  Because it is
> packed, it'll use less memory, but that code also has to be executed.  I
> don't know what the speed impact is, if any.

Do you have a test server where you can compare the performance of NSD
with and without this option? Specifically, can you measure how the CPU
usage changes with and without this option, and also see how many
responses per second NSD can push out?

Regards,
Anand

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