On 04/22/2015 07:16 PM, Eric Dumazet wrote:
On Wed, 2015-04-22 at 18:35 +0200, MUSCARIELLO Luca IMT/OLN wrote:
FQ gives you flow isolation.
So does fq_codel.
yes, the FQ part of fq_codel. that's what I meant. Not the FQ part of
sch_fq.
sch_fq adds *pacing*, which in itself has benefits, regardless of fair
queues : Smaller bursts, less self inflicted drops.
This I understand. But it can't protect from non self inflicted drops.
If flows are competing, this is the role of Congestion Control module,
not packet schedulers / AQM.
Exactly. Two same CC modules competing on the same link, one w pacing
the other one w/o pacing.
The latter will have negative impact on the former in FIFO. Not in FQ
(fq_codel to clarify).
And that's my incentive argument which comes from the flow isolation
feature of FQ (_codel).
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