From: zhangqilong <zhangqilong3@huawei.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"david@kernel.org" <david@kernel.org>,
"lorenzo.stoakes@oracle.com" <lorenzo.stoakes@oracle.com>,
"corbet@lwn.net" <corbet@lwn.net>,
"ziy@nvidia.com" <ziy@nvidia.com>,
"baolin.wang@linux.alibaba.com" <baolin.wang@linux.alibaba.com>,
"Liam.Howlett@oracle.com" <Liam.Howlett@oracle.com>,
"npache@redhat.com" <npache@redhat.com>,
"ryan.roberts@arm.com" <ryan.roberts@arm.com>,
"dev.jain@arm.com" <dev.jain@arm.com>,
"baohua@kernel.org" <baohua@kernel.org>,
"lance.yang@linux.dev" <lance.yang@linux.dev>,
"vbabka@suse.cz" <vbabka@suse.cz>,
"rppt@kernel.org" <rppt@kernel.org>,
"surenb@google.com" <surenb@google.com>,
"mhocko@suse.com" <mhocko@suse.com>,
"Wangkefeng (OS Kernel Lab)" <wangkefeng.wang@huawei.com>,
Sunnanyong <sunnanyong@huawei.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH next 0/2] THP COW support for private executable file mmap
Date: Tue, 16 Dec 2025 02:12:10 +0000 [thread overview]
Message-ID: <c0ceb2104cac497383f7f7e5e7a00930@huawei.com> (raw)
> On Mon, Dec 15, 2025 at 08:34:05PM +0800, Zhang Qilong wrote:
> > This patch series implementate THP COW for private executable file
> > mmap. It's major designed to increase the iTLB cache hit rate for hot
> > patching application, and we add a new sysfs knob to disable or enable
> > it.
>
> You're going to have to provide data to get this patch in. We've deliberately
> not done this in the past due to memory consumption overhead.
Year, memory consumption overhead is a serious issue, we will conduct a careful evaluation
> So you need to prove that's now the wrong decision to make.
>
> Microbenchmarks would be a bare minimum, but what are really needed are
> numbers from actual workloads.
Okay, I'm also trying to gather some test data locally(include microbenchmarks and actual workloads).
I'll attach the results once I have finished. Thank you for your suggestion.
--
Thanks,
Zhang
next reply other threads:[~2025-12-16 2:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-16 2:12 zhangqilong [this message]
-- strict thread matches above, loose matches on Subject: below --
2025-12-16 7:42 [PATCH next 0/2] THP COW support for private executable file mmap zhangqilong
2025-12-30 21:29 ` David Hildenbrand (Red Hat)
2025-12-16 2:24 zhangqilong
2025-12-16 2:43 ` David Hildenbrand (Red Hat)
2025-12-15 12:34 Zhang Qilong
2025-12-15 14:00 ` Matthew Wilcox
2025-12-15 14:26 ` David Hildenbrand (Red Hat)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c0ceb2104cac497383f7f7e5e7a00930@huawei.com \
--to=zhangqilong3@huawei.com \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=baohua@kernel.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=corbet@lwn.net \
--cc=david@kernel.org \
--cc=dev.jain@arm.com \
--cc=lance.yang@linux.dev \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=mhocko@suse.com \
--cc=npache@redhat.com \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=sunnanyong@huawei.com \
--cc=surenb@google.com \
--cc=vbabka@suse.cz \
--cc=wangkefeng.wang@huawei.com \
--cc=willy@infradead.org \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.