Rich man's version of AIO on Linux 2.6.x?
leon.woestenberg at gmail.com
Sat May 23 12:45:21 UTC 2009
On Fri, May 22, 2009 at 4:54 PM, Michal Hocko <mhocko at suse.cz> wrote:
> On Fri 22-05-09 02:59:53, Leon Woestenberg wrote:
>> On the state-of-art of asynchronous I/O in Linux. I understand we have
>> full support for AIO in the Linux 2.6.x kernel but I cannot find how
>> to use it from user space.
>> I would like to exploit AIO in hardware and the device driver for it,
>> by keeping the hardware performing I/O at all times (no setup latency
>> between requests by allowing multiple
>> I/O requests to be queued in hardware). Note this is a character
>> device, not a filesystem.
> Check the libaio library (io_submit and friends)
Thanks, I checked the libaio library. It does not support the POSIX
interface, which I'ld like to use to keep things portable.
The http://www.bullopensource.org/posix/ library is more promising in
that regard but it doesn't seem maintained.
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