Re: mec(4) TX improvement and mbuf statistics

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

martin%duskware.de@localhost wrote:

> Here are my results with your patch (and the cpuflags you suggested, on
> both machines)

> On a R10K O2:
 :
> mec0 TX pkts queued total                    296540      346 misc
 :
> mec0 TX pkts copied to new mbufs              15138       17 misc

> On a R5K O2:
 :
> mec0 TX pkts queued total                    119472      113 misc
 :
> mec0 TX pkts copied to new mbufs               2259        2 misc

Hmm, a bit higher rates of packets are copied to new mbufs,
but I think it's still worth to handle TX packets with
the new strategy.
If there is no objection, I'll commit it soon.

I've also put a patch for netbsd-4:
http://www.ceres.dti.ne.jp/~tsutsui/netbsd/mec-fix-netbsd-4-20080822.diff

This also includes other related changes in -current:
sgimips/sgimips/bus.c           1.50
sgimips/mace/if_mec.c           1.9, 1.12, 1.14, 1.17, 1.18, 1.20,
                                1.21(patch), 1.22-1.25, 1.26(patch),
                                1.27(patch), 1.28, 1.29, 1.30(patch)
sgimips/mace/if_mecreg.h        1.4
sgimips/conf/files.sgimips      1.44

I'm not sure if it's worth to pullup all these changes,
but any reports/comments would be appreciated.
---
Izumi Tsutsui