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| author | Jens Axboe <axboe@kernel.dk> | 2019-11-10 22:10:27 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-11-10 22:10:27 -0700 |
| commit | d9b3a105090749311de3eb8e5643acf3f20e8ebe (patch) | |
| tree | 7a75f2d5733c51861f353cc879d5cd077b92c1fa /README | |
| parent | d4196c2241e0466569cbe67692d962630386007e (diff) | |
| download | liburing-d9b3a105090749311de3eb8e5643acf3f20e8ebe.tar.gz liburing-d9b3a105090749311de3eb8e5643acf3f20e8ebe.tar.bz2 | |
README: add small blurb on rlimit memlocked (ulimit -l)
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -15,4 +15,18 @@ and development for both kernel and userspace. The list is archived here: https://lore.kernel.org/io-uring/ -Jens Axboe 2019-08-05 + +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. + + +Jens Axboe 2019-11-10 |