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io_uring: increase IORING_MAX_ENTRIES to 32K

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Some workloads can require far more than 4K oustanding entries. For
example memcached can have ~300K sockets over ~40 cores. Bumping the max
to 32K seems to work pretty well.

Reported-by: Dan Melnic <dmm@fb.com>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Daniel Xu 2019-09-14 14:23:45 -07:00 committed by Jens Axboe
parent b2a9eadab8
commit 5277deaab9
1 changed files with 1 additions and 1 deletions
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2
fs/io_uring.c
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@ -75,7 +75,7 @@
#include "internal.h"
#define IORING_MAX_ENTRIES 4096
#define IORING_MAX_ENTRIES 32768
#define IORING_MAX_FIXED_FILES 1024
struct io_uring {