From: Shirley Ma <shirley.ma-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux NFS Mailing List
<linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3 00/21] NFS/RDMA client patches for 3.17
Date: Wed, 16 Jul 2014 08:48:19 -0700 [thread overview]
Message-ID: <53C69EC3.1010208@oracle.com> (raw)
In-Reply-To: <59034BAD-306F-462F-A274-3EB06C0CBE47-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
These two patches have been significant reduced interrupt rate by around 4 times.
xprtrdma: Disable completions for FAST_REG_MR Work Requests
xprtrdma: Disable completions for LOCAL_INV Work Requests
Same NFS read/write workload, here are interrupts rate irq/per sec report based upon /proc/interrupts:
w/o patches:
-----------
PCI-MSI-edge mlx4-ib (204): 105176
PCI-MSI-edge mlx4-ib (204): 123650
PCI-MSI-edge mlx4-ib (204): 123690
PCI-MSI-edge mlx4-ib (204): 116554
PCI-MSI-edge mlx4-ib (204): 122864
And perf stat irq report:
Performance counter stats for 'system wide':
2,131,870 irq:irq_handler_entry [100.00%]
2,131,870 irq:irq_handler_exit [100.00%]
635,587 irq:softirq_entry [100.00%]
635,597 irq:softirq_exit [100.00%]
636,155 irq:softirq_raise
25.422821792 seconds time elapsed
w/i patches:
-----------
PCI-MSI-edge mlx4-ib (204): 31131
PCI-MSI-edge mlx4-ib (204): 32958
PCI-MSI-edge mlx4-ib (204): 31068
PCI-MSI-edge mlx4-ib (204): 30236
PCI-MSI-edge mlx4-ib (204): 33041
And perf stat irq report:
Performance counter stats for 'system wide':
653,548 irq:irq_handler_entry [100.00%]
653,548 irq:irq_handler_exit [100.00%]
568,138 irq:softirq_entry [100.00%]
568,148 irq:softirq_exit [100.00%]
568,690 irq:softirq_raise
21.675597062 seconds time elapsed
Shirley
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2014-07-16 15:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-15 14:24 [PATCH v3 00/21] NFS/RDMA client patches for 3.17 Chuck Lever
[not found] ` <59034BAD-306F-462F-A274-3EB06C0CBE47-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2014-07-16 15:48 ` Shirley Ma [this message]
[not found] ` <53C69EC3.1010208-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2014-07-16 17:57 ` Chuck Lever
[not found] ` <EB581A8B-097E-4C0F-97B3-D04B2B791A69-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2014-07-16 18:22 ` Shirley Ma
2014-07-17 5:06 ` Devesh Sharma
[not found] ` <EE7902D3F51F404C82415C4803930ACD3FE10DE1-DWYeeINJQrxExQ8dmkPuX0M9+F4ksjoh@public.gmane.org>
2014-07-17 14:12 ` Devesh Sharma
[not found] ` <3cf9f937-4c1c-4a39-9fb8-aca5eea15880-3RiH6ntJJkOPfaB/Gd0HpljyZtpTMMwT@public.gmane.org>
2014-07-17 14:16 ` Chuck Lever
[not found] ` <5DD61444-DCBF-40B7-B246-6CAD450E7047-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2014-07-17 14:21 ` Devesh Sharma
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=53C69EC3.1010208@oracle.com \
--to=shirley.ma-qhclzuegtsvqt0dzr+alfa@public.gmane.org \
--cc=chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org \
--cc=linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.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