Date: Sun, 13 Jan 2002 14:24:17 -0800 (PST) From: Doug White <dwhite@resnet.uoregon.edu> To: k Macy <kip_macy@yahoo.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: How well does EVFILT_AIO work? Message-ID: <20020113142249.U51854-100000@resnet.uoregon.edu> In-Reply-To: <20020113062729.45895.qmail@web14003.mail.yahoo.com>
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On Sat, 12 Jan 2002, k Macy wrote: > Has anybody used AIO in conjunction with kevent? I am seeing as much as > a 12 second latency between when I do an 8k aio_write to a file on local > disk and kevent returning its completion (I'm calling kevent every > ~20ms). Using regular writes works fine, but this is a multi-threaded > application so they cause the entire process to block. I think you've overdone the async idea here. Threads already do non-blocking I/O but appear to block by various trickery. If you are doing AIO in threads then you could just as easily dispose of the threads and streamline your code. Doug White | FreeBSD: The Power to Serve dwhite@resnet.uoregon.edu | www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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