| liburing | |
| -------- | |
| This is the io_uring library, liburing. liburing provides helpers to setup and | |
| teardown io_uring instances, and also a simplified interface for | |
| applications that don't need (or want) to deal with the full kernel | |
| side implementation. | |
| For more info on io_uring, please see: | |
| https://kernel.dk/io_uring.pdf | |
| Subscribe to io-uring@vger.kernel.org for io_uring related discussions | |
| and development for both kernel and userspace. The list is archived here: | |
| https://lore.kernel.org/io-uring/ | |
| ulimit settings | |
| --------------- | |
| io_uring accounts memory it needs under the rlimit memlocked option, which | |
| can be quite low on some setups (64K). The default is usually enough for | |
| most use cases, but bigger rings or things like registered buffers deplete | |
| it quickly. root isn't under this restriction, but regular users are. Going | |
| into detail on how to bump the limit on various systems is beyond the scope | |
| of this little blurb, but check /etc/security/limits.conf for user specific | |
| settings, or /etc/systemd/user.conf and /etc/systemd/system.conf for systemd | |
| setups. | |
| Regressions tests | |
| ----------------- | |
| The bulk of liburing is actually regression/unit tests for both liburing and | |
| the kernel io_uring support. Please note that this suite isn't expected to | |
| pass on older kernels, and may even crash or hang older kernels! | |
| License | |
| ------- | |
| All software contained within this repo is dual licensed LGPL and MIT, see | |
| COPYING and LICENSE, except for a header coming from the kernel which is | |
| dual licensed GPL with a Linux-syscall-note exception and MIT, see | |
| COPYING.GPL and <https://spdx.org/licenses/Linux-syscall-note.html>. | |
| Jens Axboe 2020-01-20 |