{{Quickfixn}} Sources of latency

[xmoon 2000]

Hi,

I am getting some latency between exchange time in the FIX message and
Time stored in quickfixn logs.

I have put wireshark on and I see I am getting the packets in a timely fashion.

I tried swapping the standard QuickFixn logging routine for a
high-performance one, and I STILL see the latency issue (about
10-20ms) across a received "burst" of messages.

What else happens between a FIX message getting to my machine and
QuickFixn logging it?

Moon