SCTP performance is low when thousands of associations are connected to one endpoint
Issue
- When thousands of endpoints connect with same source port to one single destination IP+port the lookup in SCTP kernel module is slow.
- When running with stock kernel and > 6000 SCTP connections from same source port the ksoftirqd saturates to 100% CPU load.
Environment
- Red Hat Enterprise Linux <= 7.2
- Red Hat Enterprise Linux 6
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