Snort 1.8 more CPU intensive?

["Mayers, Philip J" <p.mayers () ic ac uk>]

Running snort 1.7 with the Whitehats rules, and snort 1.8 (CVS) from the
1.8-specific whitehats rules, 1.7 seemed to idle at about 50% on
10-100Mbits, and snort 1.8 at about 100% on the same load. Is this expected?
RedHat 6.2 machine on a Sun Ultra 5. Disk IO is minimal, since I filter a
lot out at the BPF point.

Regards,
Phil

+----------------------------------+
| Phil Mayers, Network Support     |
| Centre for Computing Services    |
| Imperial College                 |
+----------------------------------+  

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