Nicolas Williams wrote:
> On Tue, Jun 09, 2009 at 10:24:53PM -0700, Garrett D'Amore wrote:
>
>> Bzzt. You're conflating things here. VLAN and Jumbo frames affect *on
>> the wire* transmission and *need* to be tunable.
>>
>> TSO and LSO are *optimizations* that don't affect on the wire
>> presentation, and needing to tune them at all is a *bug*.
>>
>
> Unless you're trying to demonstrate them and the perf benefit you get
> from having them, or just to see for yourself. Sure, a feature whose
> only value is, in a way, marketing. But marketing matters.
>
For marketing purposes, a specially hacked driver, or a private tunable,
are adequate. We don't need to pollute our framework for this, nor
should we confuse administrators by presenting something to them that
they shouldn't be tuning.
Solaris suffers from ETOOMANYTUNABLES. Canonizing more of them is not
the right way forward.
- Garrett
