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From: Jens Axboe <[email protected]>
To: [email protected]
Subject: Re: [PATCHSET 0/3] Provide more efficient buffer registration
Date: Wed, 11 Sep 2024 14:13:10 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 9/11/24 2:03 PM, Jens Axboe wrote:
> Hi,
> 
> Pretty much what the subject line says, it's about 25k to 40k times
> faster to provide a way to duplicate an existing rings buffer
> registration than it is manually map/pin/register the buffers again
> with a new ring.
> 
> Patch 1 is just a prep patch, patch 2 adds refs to struct
> io_mapped_ubuf, and patch 3 finally adds the register opcode to allow
> a ring to duplicate the registered mappings from one ring to another.
> 
> This came about from discussing overhead from the varnish cache
> project for cases with more dynamic ring/thread creation.

Ignore this one, it was an old version... I'll send a v2 in a bit.

-- 
Jens Axboe


      parent reply	other threads:[~2024-09-11 20:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-11 20:03 [PATCHSET 0/3] Provide more efficient buffer registration Jens Axboe
2024-09-11 20:03 ` [PATCH 1/3] io_uring/rsrc: clear 'slot' entry upfront Jens Axboe
2024-09-11 20:03 ` [PATCH 2/3] io_uring/rsrc: add reference count to struct io_mapped_ubuf Jens Axboe
2024-09-11 20:03 ` [PATCH 3/3] io_uring: add IORING_REGISTER_COPY_BUFFERS method Jens Axboe
2024-09-11 20:13 ` Jens Axboe [this message]

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