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ca558e1859
Denys reported wrong rate estimations with HTB classes.
It appears the bug was added in linux-4.10, since my tests
where using intervals of one second only.
HTB using 4 sec default rate estimators, reported rates
were 4x higher.
We need to properly scale the bytes/packets samples before
integrating them in EWMA.
Tested:
echo 1 >/sys/module/sch_htb/parameters/htb_rate_est
Setup HTB with one class with a rate/cail of 5Gbit
Generate traffic on this class
tc -s -d cl sh dev eth0 classid 7002:11
class htb 7002:11 parent 7002:1 prio 5 quantum 200000 rate 5Gbit ceil
5Gbit linklayer ethernet burst 80000b/1 mpu 0b cburst 80000b/1 mpu 0b
level 0 rate_handle 1
Sent 1488215421648 bytes 982969243 pkt (dropped 0, overlimits 0
requeues 0)
rate 5Gbit 412814pps backlog 136260b 2p requeues 0
TCP pkts/rtx 982969327/45 bytes 1488215557414/68130
lended: 22732826 borrowed: 0 giants: 0
tokens: -1684 ctokens: -1684
Fixes:
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.. | ||
datagram.c | ||
dev_addr_lists.c | ||
dev_ioctl.c | ||
dev.c | ||
devlink.c | ||
drop_monitor.c | ||
dst_cache.c | ||
dst.c | ||
ethtool.c | ||
fib_notifier.c | ||
fib_rules.c | ||
filter.c | ||
flow_dissector.c | ||
gen_estimator.c | ||
gen_stats.c | ||
gro_cells.c | ||
hwbm.c | ||
link_watch.c | ||
lwt_bpf.c | ||
lwtunnel.c | ||
Makefile | ||
neighbour.c | ||
net_namespace.c | ||
net-procfs.c | ||
net-sysfs.c | ||
net-sysfs.h | ||
net-traces.c | ||
netclassid_cgroup.c | ||
netevent.c | ||
netpoll.c | ||
netprio_cgroup.c | ||
pktgen.c | ||
ptp_classifier.c | ||
request_sock.c | ||
rtnetlink.c | ||
scm.c | ||
secure_seq.c | ||
skbuff.c | ||
sock_diag.c | ||
sock_reuseport.c | ||
sock.c | ||
stream.c | ||
sysctl_net_core.c | ||
timestamping.c | ||
tso.c | ||
utils.c |