Long ago I worked in the kernel of a BSD which supported async (disk) I/O.
The internals did use a kernel thread for queueing and reporting.
There was one per process using AIO because it made life simpler:
each page which was mentioned in AIO had to be pinned,
and blaming that on the AIO
On Fri, Dec 4, 2009 at 12:07 AM, Ted Unangst ted.unan...@gmail.com wrote:
On Thu, Dec 3, 2009 at 11:47 PM, Dope Ice Apollyon the Third
kou...@gmail.com wrote:
On Thu, Dec 3, 2009 at 10:57 PM, Luis Useche use...@gmail.com wrote:
Hi Guys,
I have been looking for information on how to do
On Fri, Dec 4, 2009 at 10:20 AM, Luis Useche use...@gmail.com wrote:
On Fri, Dec 4, 2009 at 12:07 AM, Ted Unangst ted.unan...@gmail.com wrote:
On Thu, Dec 3, 2009 at 11:47 PM, Dope Ice Apollyon the Third
kou...@gmail.com wrote:
On Thu, Dec 3, 2009 at 10:57 PM, Luis Useche use...@gmail.com
On Fri, Dec 4, 2009 at 10:20 AM, Luis Useche use...@gmail.com wrote:
Exactly, I am more interested more in something close to aio_read
aio_write. I was hoping there was some api I can use. Is there any
reason why POSIX aio does not exist in OBSD?
Nobody wrote it.
Penned by Dope Ice Apollyon the Third on 20091204 10:43.03, we have:
| On Fri, Dec 4, 2009 at 10:20 AM, Luis Useche use...@gmail.com wrote:
| On Fri, Dec 4, 2009 at 12:07 AM, Ted Unangst ted.unan...@gmail.com wrote:
| On Thu, Dec 3, 2009 at 11:47 PM, Dope Ice Apollyon the Third
|
2009/12/4 Ted Unangst ted.unan...@gmail.com:
On Fri, Dec 4, 2009 at 10:20 AM, Luis Useche use...@gmail.com wrote:
Exactly, I am more interested more in something close to aio_read
aio_write. I was hoping there was some api I can use. Is there any
reason why POSIX aio does not exist in OBSD?
On Fri, Dec 4, 2009 at 1:34 PM, Todd T. Fries t...@fries.net wrote:
Unfortunately qemu has aio support.
Does it really need it? I cooked up a basic userland implementation
using pthreads last night.
Penned by Ted Unangst on 20091204 16:30.57, we have:
| On Fri, Dec 4, 2009 at 1:34 PM, Todd T. Fries t...@fries.net wrote:
| Unfortunately qemu has aio support.
|
| Does it really need it? I cooked up a basic userland implementation
| using pthreads last night.
They provide compatibility
On Fri, Dec 4, 2009 at 4:45 PM, Todd T. Fries t...@fries.net wrote:
Does aio really require threading?
In some sense, yes, in others, no. aio is designed so you don't need
(userland) threads.
Normally you'd write your server to use non-blocking io. But that
doesn't work with files on disk.
Iguess the short answers is that it is not implemented and probably it won't.
There are certain applications that would certainly benefit from aio.
The one I can think of (it is the one I use the most) is I/O trace
replay. But I am sure that there are plenty of applications that can
benefit from
On Thu, Dec 3, 2009 at 10:57 PM, Luis Useche use...@gmail.com wrote:
Hi Guys,
I have been looking for information on how to do asynchronous I/Os in
OBSD with no luck. The only thing I have found so far is the O_ASYNC
flag in the fcntl syscall. I couldn't find any manual that talks about
On Thu, Dec 3, 2009 at 11:47 PM, Dope Ice Apollyon the Third
kou...@gmail.com wrote:
On Thu, Dec 3, 2009 at 10:57 PM, Luis Useche use...@gmail.com wrote:
Hi Guys,
I have been looking for information on how to do asynchronous I/Os in
OBSD with no luck. The only thing I have found so far is the
12 matches
Mail list logo
