[MESOS-2514] Change the default leaf qdisc to fq_codel inside containers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.23.0
• Epic Link: Container Network Isolation
• Sprint: Twitter Mesos Q1 Sprint 5
• Story Points: 1
• Assignee: Cong Wang
• Reporter: Cong Wang
• Created: 18/Mar/15 21:35
• Updated: 18/Jun/15 18:15
• Resolved: 23/Mar/15 18:36

Description

When we enable bandwidth cap, htb is used on egress side inside containers, however, the default leaf qdisc for a htb class is still pfifo_fast, which is known to have buffer bloat. Change the default leaf qdisc to fq_codel too:

`tc qd add dev eth0 parent 1:1 fq_codel`

I can no longer see packet drops after this change.