??? arrived ???

Hello: Would you please tell me what's the meaning of the word 'arrived' below? It's the output of command "onstat -g con". And the waittime of that condition keep growing. Or if any knows where to get the meaning of all kind of conditions (eg: drcb_bqf, arrived, sm_read ...) ? Thanks!! leo ======================================================= INFORMIX-OnLine Version 7.13.UC1 -- On-Line (Prim) -- Up 3 days 00:41: 2400 Kbytes Conditions with waiters: cid addr name waiter waittime 520 cba17e18 drcb_bqf 55 7 355626 cbb631c8 arrived 877 1033 385529 cdc2dcb8 sm_read 1269 137 385656 cbd15fe0 sm_read 1271 0 385660 ccb25e18 sm_read 1272 0