[Cerowrt-devel] looking over ampdu stats

[Sujith Manoharan]

Dave Taht wrote:
> in my tests, we almost never see more than 2 AMPDUs stacked up. (just
> running netperf, not rrul).

2 is the minimum queue depth to aggregate packets. From ath9k.h:
#define ATH_AGGR_MIN_QDEPTH 2

> This could be the fault of the client device I'm using...

This is not a bug with the client.

> cat /sys/kernel/debug/ieee80211/phy1/ath9k/queues
> 
> (note: have set the default be_qlen to the default here)
> 
> (VO):  qnum: 0 qdepth:  0 ampdu-depth:  0 pending:   0 stopped: 0
> (VI):  qnum: 1 qdepth:  0 ampdu-depth:  0 pending:   0 stopped: 0
> (BE):  qnum: 2 qdepth:  3 ampdu-depth:  2 pending:  60 stopped: 0
> (BK):  qnum: 3 qdepth:  0 ampdu-depth:  0 pending:   0 stopped: 0
> (CAB): qnum: 8 qdepth:  0 ampdu-depth:  0 pending:   0 stopped: 0

qlen will not affect the minimum aggregate threshold, so adjusting
be_qlen will not affect aggregation.

Sujith