IO-Uring Archive on
 help / color / Atom feed
* Feature: zero-copy splice API/opcode
@ 2020-01-09 14:58 Mark Papadakis
  2020-01-12 21:21 ` Pavel Begunkov
  0 siblings, 1 reply; 2+ messages in thread
From: Mark Papadakis @ 2020-01-09 14:58 UTC (permalink / raw)
  To: io-uring


I ‘ve been trying to replicate the benefits provided by sendfile() using e.g O_DIRECT access, together with IOSQE_IO_LINK in SQE flags and MSG_ZEROCOPY, but it doesn’t appear to work. Other ideas didn’t work either.

I would really appreciate a sendfile like SQE opcode, but maybe some sort of generic DMA/zero-copy based opcode based on splice semantics could be implemented, so that e.g a vmsplice() like alternative could also work.

(That would be the last remaining bit of functionality missing from io_uring, now that Jens has implemented support for IOSQE_ASYNC, IORING_REGISTER_EVENTFD_ASYNC and for managing epoll FDs, for enabling support for io_uring on ).

Thank you,

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, back to index

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-09 14:58 Feature: zero-copy splice API/opcode Mark Papadakis
2020-01-12 21:21 ` Pavel Begunkov

IO-Uring Archive on

Archives are clonable:
	git clone --mirror io-uring/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 io-uring io-uring/ \
	public-inbox-index io-uring

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone