Hello lartc,
Testing some rules I found out that any rules are slowing down large pings!
I can't reproduce this.
For example:
tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:1 htb rate 100Mbit prio 1 ceil 100Mbit tc class add dev eth0 parent 1:1 classid 1:2 htb rate 100Mbit prio 2 ceil 100Mbit
tc filter add dev eth0 parent 1:0 prio 5 u32 \
Error for me unless I add protocol ip
match ip src 10.10.10.1 \ match ip dst 10.10.10.10 \ flowid 1:2 tc qdisc add dev eth0 parent 1:2 handle 2: sfq perturb 10
Small pings are ok - <10ms, here is output for 65500 byte pings:
10ms is high I get 0.3 with p200mmx +rtl8139 + cheapest switch I could find + cables made without crimping tool.
Pinging test [10.10.10.1] with 65500 bytes of data:
Reply from 10.10.10.1: bytes=65500 time=120ms TTL=64 Reply from 10.10.10.1: bytes=65500 time=120ms TTL=64 Reply from 10.10.10.1: bytes=65500 time=120ms TTL=64 Reply from 10.10.10.1: bytes=65500 time=120ms TTL=64
I see 14ms
Ping statistics for 10.10.10.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 120ms, Maximum = 120ms, Average = 120ms
If I don't use any rules, 65500 byte pings are about ~10ms Any filters are slowing large pings for 10 times!!! What can I do to tune it up?
What kernel and hardware are you using?
Andy.
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