linux-kernel - Re: [PATCH] fuse: enable larger read buffers for readdir.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 26 Jul 2023 08:19:09 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Jaco Kroon <jaco@....co.za>, Miklos Szeredi <miklos@...redi.hu>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fuse: enable larger read buffers for readdir.



On 7/26/23 03:59, Jaco Kroon wrote:
> +config FUSE_READDIR_ORDER
> +	int
> +	range 0 5
> +	default 5
> +	help
> +		readdir performance varies greatly depending on the size of the read.
> +		Larger buffers results in larger reads, thus fewer reads and higher
> +		performance in return.
> +
> +		You may want to reduce this value on seriously constrained memory
> +		systems where 128KiB (assuming 4KiB pages) cache pages is not ideal.
> +
> +		This value reprents the order of the number of pages to allocate (ie,

	                   represents                                            (i.e.,

> +		the shift value).  A value of 0 is thus 1 page (4KiB) where 5 is 32
> +		pages (128KiB).

-- 
~Randy