From: Josef <[email protected]>
To: Dmitry Kadashev <[email protected]>
Cc: Norman Maurer <[email protected]>,
io-uring <[email protected]>, Jens Axboe <[email protected]>
Subject: Re: "Cannot allocate memory" on ring creation (not RLIMIT_MEMLOCK)
Date: Thu, 17 Dec 2020 11:38:35 +0100 [thread overview]
Message-ID: <CAAss7+owve47-D9SzLpzeCiPAOjKxhc5D2ZY-aQw5WOCvQA5wA@mail.gmail.com> (raw)
In-Reply-To: <CAOKbgA5X7WWQ4LWN4hXt8Rc5qQOOG24tTyxsKos7KO1ybOeC1w@mail.gmail.com>
> > That is curious. This ticket mentions Shmem though, and in our case it does
> not look suspicious at all. E.g. on a box that has the problem at the moment:
> Shmem: 41856 kB. The box has 256GB of RAM.
>
> But I'd (given my lack of knowledge) expect the issues to be related anyway.
what about mapped? mapped is pretty high 1GB on my machine, I'm still
reproduce that in C...however the user process is killed but not the
io_wq_worker kernel processes, that's also the reason why the server
socket still listening(even if the user process is killed), the bug
only occurs(in netty) with a high number of operations and using
eventfd_write to unblock io_uring_enter(IORING_ENTER_GETEVENTS)
(tested on kernel 5.9 and 5.10)
--
Josef
next prev parent reply other threads:[~2020-12-17 10:39 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 8:19 "Cannot allocate memory" on ring creation (not RLIMIT_MEMLOCK) Dmitry Kadashev
2020-12-17 8:26 ` Norman Maurer
2020-12-17 8:36 ` Dmitry Kadashev
2020-12-17 8:40 ` Dmitry Kadashev
2020-12-17 10:38 ` Josef [this message]
2020-12-17 11:10 ` Dmitry Kadashev
2020-12-17 13:43 ` Victor Stewart
2020-12-18 9:20 ` Dmitry Kadashev
2020-12-18 17:22 ` Jens Axboe
2020-12-18 15:26 ` Jens Axboe
2020-12-18 17:21 ` Josef
2020-12-18 17:23 ` Jens Axboe
2020-12-19 2:49 ` Josef
2020-12-19 16:13 ` Jens Axboe
2020-12-19 16:29 ` Jens Axboe
2020-12-19 17:11 ` Jens Axboe
2020-12-19 17:34 ` Norman Maurer
2020-12-19 17:38 ` Jens Axboe
2020-12-19 20:51 ` Josef
2020-12-19 21:54 ` Jens Axboe
2020-12-19 23:13 ` Jens Axboe
2020-12-19 23:42 ` Josef
2020-12-19 23:42 ` Pavel Begunkov
2020-12-20 0:25 ` Jens Axboe
2020-12-20 0:55 ` Pavel Begunkov
2020-12-21 10:35 ` Dmitry Kadashev
2020-12-21 10:49 ` Dmitry Kadashev
2020-12-21 11:00 ` Dmitry Kadashev
2020-12-21 15:36 ` Pavel Begunkov
2020-12-22 3:35 ` Pavel Begunkov
2020-12-22 4:07 ` Pavel Begunkov
2020-12-22 11:04 ` Dmitry Kadashev
2020-12-22 11:06 ` Dmitry Kadashev
2020-12-22 13:13 ` Dmitry Kadashev
2020-12-22 16:33 ` Pavel Begunkov
2020-12-23 8:39 ` Dmitry Kadashev
2020-12-23 9:38 ` Dmitry Kadashev
2020-12-23 11:48 ` Dmitry Kadashev
2020-12-23 12:27 ` Pavel Begunkov
2020-12-20 1:57 ` Pavel Begunkov
2020-12-20 7:13 ` Josef
2020-12-20 13:00 ` Pavel Begunkov
2020-12-20 14:19 ` Pavel Begunkov
2020-12-20 15:56 ` Josef
2020-12-20 15:58 ` Pavel Begunkov
2020-12-20 16:14 ` Jens Axboe
2020-12-20 16:59 ` Josef
2020-12-20 18:23 ` Josef
2020-12-20 18:41 ` Pavel Begunkov
2020-12-21 8:22 ` Josef
2020-12-21 15:30 ` Pavel Begunkov
2020-12-21 10:31 ` Dmitry Kadashev
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