From 43e0bbbd0b0e30d232fd8e9e908125b5c49a9fbc Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 7 Jul 2022 14:30:09 -0600 Subject: io_uring: add netmsg cache For recvmsg/sendmsg, if they don't complete inline, we currently need to allocate a struct io_async_msghdr for each request. This is a somewhat large struct. Hook up sendmsg/recvmsg to use the io_alloc_cache. This reduces the alloc + free overhead considerably, yielding 4-5% of extra performance running netbench. Signed-off-by: Jens Axboe --- include/linux/io_uring_types.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h index bf8f95332eda..d54b8b7e0746 100644 --- a/include/linux/io_uring_types.h +++ b/include/linux/io_uring_types.h @@ -222,8 +222,7 @@ struct io_ring_ctx { struct io_hash_table cancel_table_locked; struct list_head cq_overflow_list; struct io_alloc_cache apoll_cache; - struct xarray personalities; - u32 pers_next; + struct io_alloc_cache netmsg_cache; } ____cacheline_aligned_in_smp; /* IRQ completion list, under ->completion_lock */ @@ -241,6 +240,9 @@ struct io_ring_ctx { unsigned int file_alloc_start; unsigned int file_alloc_end; + struct xarray personalities; + u32 pers_next; + struct { /* * We cache a range of free CQEs we can use, once exhausted it -- cgit v1.2.3