When exercising the built-in "UniNEnet" gigE interface on a powerbook, I noticed that OS-X 10.2.4 falls over rather quicky under load. Trying 'netperf -tUDP_STREAM -Hsome-fast-host -- -m 1472', I saw: panic(cpu 0): 0x300 - Data access Latest stack backtrace for cpu 0: Backtrace: 0x00084FAC 0x000853DC 0x00027FA8 0x0008EE68 0x00091F78 Proceeding back via exception chain: Exception state (sv=0x19269000) PC=0x001F82EC; MSR=0x00009030; DAR=0x00000008; DSISR=0x40000000; LR=0x001007D8; R1=0x11DF3B70; XCP=0x0000000C (0x300 - Data access) Backtrace: 0x00000000 0x001007D8 0x0010B9CC 0x001FB4DC 0x001FF788 0x001FF8C0 0x0020E59C 0x00092110 0x00430053 Exception state (sv=0x1969F280) PC=0x9001352C; MSR=0x0000D030; DAR=0x17170000; DSISR=0x42000000; LR=0x0000856C; R1=0xBFFFF600; XCP=0x00 000030 (0xC00 - System call) This looks like: 001f8258 A _m_copym 000ff964 A _ip_output 0010b810 a _udp_output 001fae04 A _sosend 001ff544 a _sendit 001ff864 A _sendto 0020e34c A _unix_syscall Interestingly, I can get this to happen on an 867MHz powerbook, but not on a dual 800MHz G4. Just thought y'all might be interested. Cheers, Drew _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.