Thread (27 messages) flat view 27 messages, 8 authors, 2020-07-15

Re: [PATCH 0/3] readfile(2): a new syscall to make open/read/close faster

From: Pavel Machek <hidden>
Date: 2020-07-14 06:51:17
Also in: linux-fsdevel, linux-kselftest, linux-man, lkml

Hi!
quoted
At first, I thought that the proposed system call is capable of
reading *multiple* small files using a single system call - which
would help increase HDD/SSD queue utilization and increase IOPS (I/O
operations per second) - but that isn't the case and the proposed
system call can read just a single file.
If you want to do this for multple files, use io_ring, that's what it
was designed for.  I think Jens was going to be adding support for the
open/read/close pattern to it as well, after some other more pressing
features/fixes were finished.
What about... just using io_uring for single file, too? I'm pretty
sure it can be wrapped in a library that is simple to use, avoiding
need for new syscall.
							Pavel
							
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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