[Pvfs2-users] Re: 2.8.1 question

Rob Ross rross at mcs.anl.gov
Sun Mar 8 20:10:44 EST 2009


The lio_listio interface is part of the POSIX async. I/O interface.  
There's an alt-aio option now that (IIRC) uses some threads and  
blocking I/O instead, and there is also the O_DIRECT option now.

Rob

On Mar 8, 2009, at 8:03 PM, Bradley Settlemyer wrote:

> Hmm, I thought PVFS used the list io interface for a long time.  I
> must be mistaken.
>
> On Sun, Mar 8, 2009 at 8:59 PM, Kyle Schochenmaier  
> <kschoche at gmail.com> wrote:
>> I was under the impression that PVFS has always used glibc async io,
>> which is somewhat outdated.
>> There was an attempt at a few locations to use other async io
>> libraries - I think we tried bullposix a few years ago - but it was
>> messy.
>>
>> ~Kyle
>>
>> Kyle Schochenmaier
>>
>>
>>
>> On Sun, Mar 8, 2009 at 7:26 PM, Bradley Settlemyer
>> <bradles at parl.clemson.edu> wrote:
>>> I notice now that disabling that feature is experimental.  How
>>> experimental exactly, as aio isn't really the behavior I want?
>>>
>>> Cheers,
>>> Brad
>>>
>>>
>>> On Sun, Mar 8, 2009 at 8:22 PM, Bradley Settlemyer
>>> <bradles at parl.clemson.edu> wrote:
>>>> Does PVFS 2.8.1 use async IO?
>>>>
>>>> Cheers,
>>>> Brad
>>>>
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>>
>
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