Patrick McHardy wrote:
Sorry for the repost Dave, I accidentally used the @oss.sgi.com address
in my previous posting.
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It seems to be a common mistake to use jiffies as clocksource,
which gives very bad results in most cases. This patch changes
the default to gettimeofday.
What do you think about making HTB hysteresis 0 and possibly set HZ to
1000 when HTB is selected?
By default now I think jitter on htb is 8ms on 100mbit it's 1ms with the
tweaks (depending on there being 1 class).
Irrespective of Hz, at low speed - say 128kbit the default setting of
HYSTERSIS 1 means that bulk packets are sent in pairs unneccerily adding
90ms to jitter.
HTB default qlen is that of the device or 3 if it is less. Maybe it
should be increased 30? 3 is pretty useless for thoughput, but means
that people who don't specify/get default lengths on sub queues get a
half working setup.
Andy.
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