Asterisk Performance on DL360 G6

[GaryF]

I've got something here that looks odd, and wondering if anyone may shed some light. We've been running Asterisk 1.4.30 (and earlier) on a DL380 G5 (Quad 2.33) and Debian for a couple years now. It loafs. CPU usage reports typically 1 - 5%.

Recently we've installed the same on a DL360 G6 (x5550), and CPU usage is very volatile, and reports in the 30 - 45% range with a similar work load! Asterisk and dhadi versions are the same; the config is the same; Debian on the G6 is updated to the current version. We have teamed the NICs in the G6, where it was only a single in the G5. The G6 is set for Static High Performance. HT is enabled in the G6 too, as by default.

I think that covers the basics - anyone see anything of this nature out there? Thanks!