From: pavel <pavel@pavlinux.ru>
To: Linux RT Users <linux-rt-users@vger.kernel.org>
Subject: 1us latency?
Date: Mon, 3 Aug 2015 14:13:27 +0300 [thread overview]
Message-ID: <55BF4CD7.8000007@pavlinux.ru> (raw)
# ./cyclictest -S -p fifo
defaulting realtime priority to 9
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 0.00 0.03 0.05 1/218 4240
T: 0 ( 4174) P: 9 I:1000 C: 430806 Min: 1 Act: 1 Avg: 1 Max: 10
T: 1 ( 4175) P: 9 I:1500 C: 287204 Min: 1 Act: 1 Avg: 1 Max: 6
T: 2 ( 4176) P: 9 I:2000 C: 215403 Min: 1 Act: 2 Avg: 1 Max: 11
T: 3 ( 4177) P: 9 I:2500 C: 172322 Min: 1 Act: 1 Avg: 1 Max: 9
T: 4 ( 4178) P: 9 I:3000 C: 143602 Min: 1 Act: 1 Avg: 1 Max: 10
T: 5 ( 4179) P: 9 I:3500 C: 123087 Min: 1 Act: 1 Avg: 1 Max: 11
T: 6 ( 4180) P: 9 I:4000 C: 107701 Min: 1 Act: 1 Avg: 1 Max: 10
T: 7 ( 4181) P: 9 I:4500 C: 108232 Min: 1 Act: 2 Avg: 1 Max: 11
It possible? 1us latency? o_O
kernel- 3.18.19-rt15
cyclictest V 0.92
Intel(R) Xeon(R) CPU E3-1246 v3 @ 3.50GHz
MSI MS-7823/B85M-G43 (MS-7823), BIOS V3.14B3 06/23/2014
next reply other threads:[~2015-08-03 11:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-03 11:13 pavel [this message]
2015-08-03 16:44 ` 1us latency? Clark Williams
2015-08-03 17:59 ` pavel
2015-08-03 18:36 ` pavel
2015-08-03 18:53 ` Clark Williams
2015-08-03 19:03 ` pavel
2015-08-04 20:27 ` Frank Rowand
2015-08-06 13:12 ` Sebastian Andrzej Siewior
2015-08-06 15:03 ` Clark Williams
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=55BF4CD7.8000007@pavlinux.ru \
--to=pavel@pavlinux.ru \
--cc=linux-rt-users@vger.kernel.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 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.