Ticket #45 (new enhancement)

Opened 6 years ago

Last modified 4 years ago

Double pre-buffering for better performance with very large pcaps

Reported by: aturner Owned by: aturner
Priority: low Milestone: Future Release
Component: tcpreplay Version: 3.0.beta7
Keywords: performance Cc:
Operating System: Add to FAQ?: no
Hardware: All
Output of tcpreplay -V:

Description (last modified by aturner) (diff)

Use the TCPivo method of dual memory buffers to prefetch packets from disk. Locking penalties are reduced by having two buffers which are at any given time a write buffer (from disk) or a read buffer (to network). Only really useful if you're using a really large pcap file and you can't use the cache file to store it completely in memory IMHO.

Change History

comment:1 Changed 5 years ago by aturner

  • Add to FAQ? unset
  • Output of tcpreplay -V modified (diff)
  • Milestone changed from Future Release to 3.1

comment:2 Changed 5 years ago by aturner

  • Milestone changed from 3.1 to Future Release

Not as important now that we have a full cache option in 3.0. Still worth doing for large pcaps (larger then free RAM) or when you're not looping.

comment:3 Changed 4 years ago by aturner

  • Priority changed from medium to low
  • Description modified (diff)
  • Summary changed from Double pre-buffering to Double pre-buffering for better performance with very large pcaps
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