> kaio(AIOREAD, 4, 0x0041EF24, 4, 0x0041EF1000000000) Err#81 EBADFD
 > 
 > I think it means that solaris kaio do not support socket. Could anybody
 > tell me is that correct?

Yes.  See check_vp() in uts/common/os/aio.c.

 > If solaris kaio does not support socket, it may mean that solaris will
 > create many user thread to simulate asynchronous operations. Is there
 > any high performance socket io model for my multi connections socket
 > server?

Event ports?

      http://developers.sun.com/solaris/articles/event_completion.html

I believe Apache uses them.
 
-- 
meem
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