From: Steve French <smfrench@gmail.com>
To: CIFS <linux-cifs@vger.kernel.org>,
samba-technical <samba-technical@lists.samba.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
ronnie sahlberg <ronniesahlberg@gmail.com>
Subject: Re: Overview of performance improvements of recent SMB3 compounding patches
Date: Wed, 22 Aug 2018 14:28:01 -0500 [thread overview]
Message-ID: <CAH2r5mt4Xd7Z86MSxFXNS___sJQjN5KJTH+XLXJcqT0=97wE9A@mail.gmail.com> (raw)
In-Reply-To: <CAH2r5mtO6545itRxAV0KW7NSt7ucvxgHOtg8wUZZ0DMHO-V8XQ@mail.gmail.com>
Continuing the experiments with Ronnie's patches show additional
promising performance results from other common scenarios:
Very good news that the number of roundtrips (request/response pairs
to the server) has dropped so substantially. Reducing latency, and
allowing the server to more efficiently process the requests leads to
much better performance for these common operations:
- rename goes from 9 request/response pairs to 5 ("mv /mnt/file /mnt/file1")
- hardlink goes from 8 to only 3 (!) ("ln /mnt/file1 /mnt/file2")
- symlink (with mfsymlinks enabled) goes from 11 to 9 ("ln -s
/mnt/file1 /mnt/file3")
- touch (existing file) 6 down to 4
In current kernel we benefit from compounding now on stafs ("stat -f
/mnt"), and in the earlier note I described the improvements in
create, unlink, mkdir and rmdir which were also awesome.
This is very exciting.
On Tue, Aug 21, 2018 at 1:24 PM Steve French <smfrench@gmail.com> wrote:
>
> In experiments today with Ronnie's most recent compounding patches I
> see the expected significant improvements in create/mkdir/unlink/rmdir
> operations over SMB3 mounts (tests were to Samba but would be similar
> to all modern servers). See below:
>
> "touch /mnt/file" goes from 6 request/response pairs to 4 with
> Ronnie's compounding patches
> "rm /mnt/file" from 5 to 2 request/response pairs
> "mkdir /mnt/newdir" 6 pairs to 3 pairs
> "rmdir /mnt/newdir" 6 pairs down to 2 pairs
>
> Good job Ronnie!
> --
> Thanks,
>
> Steve
--
Thanks,
Steve
next prev parent reply other threads:[~2018-08-22 22:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-21 18:24 Overview of performance improvements of recent SMB3 compounding patches Steve French
2018-08-22 19:28 ` Steve French [this message]
2018-08-23 1:44 ` Ronnie Sahlberg
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='CAH2r5mt4Xd7Z86MSxFXNS___sJQjN5KJTH+XLXJcqT0=97wE9A@mail.gmail.com' \
--to=smfrench@gmail.com \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=ronniesahlberg@gmail.com \
--cc=samba-technical@lists.samba.org \
/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;
as well as URLs for NNTP newsgroup(s).