While reading through (at least trying to... I wish there was some sort of kernel documentation available, the entry fee is very high) the aio_* calls, I had a few questions to clear up my understanding:
1) Do they only work on files? The only implementation I see is in the VFS layer. 2) It is my understanding that it uses an aio daemon running as a kernel thread (the aio_daemon() call kind of give that one away). It seems as if this can be almost entirely done in user space. More important to what I am trying to do, it seems as if aio_* does not give peak latency or throughput performace, since the aio_daemon has to compete for resources along with all other processes. Should aio_* be used for applications that have high performance requirements? What does aio_* get you above having a seperate thread pumping in/out data? -jason To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
