linux-kernel - Re: [RFC PATCH 0/2] mm: multi-gen LRU: per-process heatmaps

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] [day] [month] [year] [list]

Message-ID: <CAJj2-QFH=8=ggYuy9Wb29VKbW+39GxvSPfQ89JXs=5eNYLxfjg@mail.gmail.com>
Date: Wed, 29 Jan 2025 17:42:50 -0800
From: Yuanchu Xie <yuanchu@...gle.com>
To: Muyang Tian <tianmuyang@...wei.com>
Cc: Michael@...haellarabel.com, akpm@...ux-foundation.org, bpf@...r.kernel.org, 
	corbet@....net, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	liuxin350@...wei.com, liwei883@...wei.com, wuchangye@...wei.com, 
	xiesongyang@...wei.com, yanan@...wei.com, yuzhao@...gle.com, 
	zhangmingyi5@...wei.com
Subject: Re: [RFC PATCH 0/2] mm: multi-gen LRU: per-process heatmaps

On Thu, Jan 9, 2025 at 3:48 AM Muyang Tian <tianmuyang@...wei.com> wrote:
>
> Hi Yuanchu,
>
> I'm working on observability and the programmable page generation policy of MGLRU based on eBPF, using a similar approach to yours.
> I'd like to know if there is any related work, such as the application of eBPF in MGLRU?
Not that I'm aware of. There were some patches fiddling with the
generation placement of pages but I can't seem to find them.

> Also, this RFC provides a user space interface to call run_aging(), which is called periodically in the demo.
> Do you plan to optimize this, perhaps by calling run_aging() based on page access observation results?
Right now I don't have any plans to optimize this patch series. What
are your use cases? All I cared about was one off observability of
accesses and not much thought went into optimizing the tool.

Thanks,
Yuanchu