From: anton.ivanov@cambridgegreys.com
To: linux-um@lists.infradead.org
Cc: richard@nod.at
Subject: Amended and retested for 32 bit "borrow ops" series
Date: Fri, 11 Dec 2020 17:45:52 +0000 [thread overview]
Message-ID: <20201211174559.26010-1-anton.ivanov@cambridgegreys.com> (raw)
Hi All,
Apologies for sending a broken version for 32 bit.
This is an amended version which has been tested for 32 bit with/without
glibc "borrowing" and 64 bit with/without glibc borrowing.
It also includes a proper 32 bit futex implementation.
I have combined all patches and bumped the version to no 4.
The total performance difference as measured with dd on a ubd device
which is mostly cached in-memory is ~ 1.3 times for 64 bit and 2.4 times
for 32 bit.
Other benchmarks (find, boot time, etc) benefit as well, but the benefit
is not so drastic.
All tests performed on a Ryzen 5 1600X host.
_______________________________________________
linux-um mailing list
linux-um@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-um
next reply other threads:[~2020-12-11 17:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-11 17:45 anton.ivanov [this message]
2020-12-11 17:45 ` [PATCH v4 1/7] um: allow the use of glibc functions instead of builtins anton.ivanov
2020-12-11 20:03 ` Johannes Berg
2020-12-11 17:45 ` [PATCH v4 2/7] um: enable the use of optimized xor routines in UML anton.ivanov
2020-12-11 20:07 ` Johannes Berg
2020-12-11 21:57 ` Anton Ivanov
2020-12-11 22:00 ` Johannes Berg
2020-12-11 22:40 ` Anton Ivanov
2020-12-14 9:07 ` Anton Ivanov
2020-12-14 9:12 ` Johannes Berg
2020-12-14 9:36 ` Anton Ivanov
2020-12-11 17:45 ` [PATCH v4 3/7] um: "borrow" atomics from x86 architecture anton.ivanov
2020-12-11 20:08 ` Johannes Berg
2020-12-11 21:31 ` Anton Ivanov
2020-12-11 17:45 ` [PATCH v4 4/7] um: add a UML specific futex implementation anton.ivanov
2020-12-11 20:10 ` Johannes Berg
2020-12-11 17:45 ` [PATCH v4 5/7] um: "borrow" cmpxchg from x86 tree in UML anton.ivanov
2020-12-11 17:45 ` [PATCH v4 6/7] um: swithch futex ops to cmpxchg anton.ivanov
2020-12-11 20:12 ` Johannes Berg
2020-12-11 21:33 ` Anton Ivanov
2020-12-11 17:45 ` [PATCH v4 7/7] um: borrow bitops from the x86 tree anton.ivanov
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=20201211174559.26010-1-anton.ivanov@cambridgegreys.com \
--to=anton.ivanov@cambridgegreys.com \
--cc=linux-um@lists.infradead.org \
--cc=richard@nod.at \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox