Hi Thomas, I read the htb code before so I'll show the problem here.
When tc comes to calculate buffer & cbuffer, it set lookup get_hz() and set buffer = rate / get_hz() + mtu. But nowadays, packet scheduling (sched) in kernel employ hrtimer so that the old limit of activity only HZ (100) times per second is removed. Also get_hz() returns 10^9 so that tc pretend that sched start 10^9 times per second. So buffer would be set to no more than mtu. But hrtimer doesn't work by this way. So every time htb starts, it can only send about 2 packet and because of sched won't start too frequently, the desired rate can't be reached. I would suggest that buffer should be manually set by user, and converted to 10ms amount of data by default in future version of tc. -- Sincerely, Yang Zhe -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
