From: Shijie Huang <shijie@amperemail.onmicrosoft.com>
To: torvalds@linux-foundation.org, viro@zeniv.linux.org.uk,
akpm@linux-foundation.org, linux-mm@kvack.org,
song.bao.hua@hisilicon.com
Cc: linux-kernel@vger.kernel.org, Frank Wang <zwang@amperecomputing.com>
Subject: Is it possible to implement the per-node page cache for programs/libraries?
Date: Wed, 1 Sep 2021 11:07:41 +0800 [thread overview]
Message-ID: <a2f423cf-9413-6bc8-e4d8-92374fc0449e@amperemail.onmicrosoft.com> (raw)
Hi Everyone,
In the NUMA, we only have one page cache for each file. For the
program/shared libraries, the
remote-access delays longer then the local-access.
So, is it possible to implement the per-node page cache for
programs/libraries?
We can do it like this:
1.) Add a new system call to control specific files to
NUMA-aware, such as:
set_numa_aware("/usr/lib/libc.so", enable);
After the system call, the page cache of libc.so has the
flags "NUMA_ENABLED"
2.) When A new process tries to setup the MMU page table for
libc.so, it will check
if NUMA_ENABLED is set. If it set, the kernel will give a
page which is bind to the process's NUMA node.
By this way, we can eliminate the remote-access for
programs/shared library.
Is this proposal ok? Or do you have a better idea?
Thanks
Huang Shijie
next reply other threads:[~2021-09-01 3:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-01 3:07 Shijie Huang [this message]
2021-09-01 2:09 ` Is it possible to implement the per-node page cache for programs/libraries? Barry Song
2021-09-01 3:25 ` Matthew Wilcox
2021-09-01 13:30 ` Huang Shijie
2021-09-01 14:25 ` Huang Shijie
2021-09-01 11:32 ` Matthew Wilcox
2021-09-01 23:58 ` Matthew Wilcox
2021-09-02 0:15 ` Barry Song
2021-09-02 1:13 ` Linus Torvalds
2021-09-02 10:16 ` Huang Shijie
2021-09-02 3:25 ` Nicholas Piggin
2021-09-02 10:17 ` Matthew Wilcox
2021-09-03 7:10 ` Nicholas Piggin
2021-09-03 19:01 ` Matthew Wilcox
2021-09-03 19:08 ` Linus Torvalds
2021-09-06 9:56 ` Huang Shijie
2021-09-03 23:42 ` Nicholas Piggin
2021-09-01 4:55 ` Al Viro
2021-09-01 13:10 ` Huang Shijie
2021-09-01 17:24 ` Linus Torvalds
2021-09-01 17:29 ` Linus Torvalds
2021-09-01 22:56 ` Barry Song
2021-09-02 10:12 ` Huang Shijie
2021-09-02 10:08 ` Huang Shijie
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