Proxy performance

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Hi all,

I am running GK 2.0.7 (static compiled) in proxy mode on a P4 2.0 Ghz, 512MB RAM, 2 x 7200RPM IDE disks software RAID1 and Intel 82559 ethernet card with CPU cycle saver mode turned on, stock Redhat 9.0. At about 10 G.723 concurrent calls, vmstat showed:

procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
1 0 0 804 8240 126200 75672 0 0 0 2 1195 1998 1 2 96
0 0 0 804 8240 126200 75672 0 0 0 2 1284 2155 1 3 96
1 0 0 804 8240 126200 75672 0 0 0 2 1293 2138 2 3 94
0 0 0 804 8240 126200 75672 0 0 0 2 1258 2174 3 4 93
0 0 0 804 8240 126200 75672 0 0 0 6 1137 1985 4 4 92
0 0 0 804 8240 126200 75672 0 0 0 2 1095 1817 3 3 94
1 0 0 804 8240 126200 75672 0 0 0 2 1086 1804 2 3 95


Load average was 0.15. At this condition, calls started to get choppy and crackling. Voice quality is acceptable at load averages < 0.10. Bandwidth is not an issue as testing was conducted locally. Are there any tuning tips to improve the performance of GNUGK in proxy mode and the voice quality?

TIA.

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