From: Jens Axboe <[email protected]>
To: Stefano Garzarella <[email protected]>
Cc: Alexander Viro <[email protected]>,
[email protected], [email protected],
[email protected]
Subject: Re: [PATCH] io_uring: wakeup threads waiting for EPOLLOUT events
Date: Thu, 23 Jan 2020 12:13:57 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <20200116170342.4jvkhbbw4x6z3txn@steredhat>
On 1/16/20 10:03 AM, Stefano Garzarella wrote:
> On Thu, Jan 16, 2020 at 09:30:12AM -0700, Jens Axboe wrote:
>> On 1/16/20 9:26 AM, Stefano Garzarella wrote:
>>>> Since the use case is mostly single submitter, unless you're doing
>>>> something funky or unusual, you're not going to be needing POLLOUT ever.
>>>
>>> The case that I had in mind was with kernel side polling enabled and
>>> a single submitter that can use epoll() to wait free slots in the SQ
>>> ring. (I don't have a test, maybe I can write one...)
>>
>> Right, I think that's the only use case where it makes sense, because
>> you have someone else draining the sq side for you. A test case would
>> indeed be nice, liburing has a good arsenal of test cases and this would
>> be a good addition!
>
> Sure, I'll send a test to liburing for this case!
Gentle ping on the test case :-)
--
Jens Axboe
next prev parent reply other threads:[~2020-01-23 19:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-16 13:49 [PATCH] io_uring: wakeup threads waiting for EPOLLOUT events Stefano Garzarella
2020-01-16 15:29 ` Jens Axboe
2020-01-16 15:55 ` Stefano Garzarella
2020-01-16 16:00 ` Jens Axboe
2020-01-16 16:26 ` Stefano Garzarella
2020-01-16 16:30 ` Jens Axboe
2020-01-16 17:03 ` Stefano Garzarella
2020-01-23 19:13 ` Jens Axboe [this message]
2020-01-23 21:45 ` Stefano Garzarella
2020-01-24 1:28 ` Jens Axboe
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