From: Miroslav Lichvar <mlichvar@redhat.com>
To: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com,
sassmann@redhat.com, Jacob Keller <jacob.e.keller@intel.com>,
Richard Cochran <richardcochran@gmail.com>
Subject: Re: [net 1/8] igb: shorten maximum PHC timecounter update interval
Date: Thu, 1 Nov 2018 15:12:39 +0100 [thread overview]
Message-ID: <20181101141239.GF19434@localhost> (raw)
In-Reply-To: <20181031194254.16417-2-jeffrey.t.kirsher@intel.com>
On Wed, Oct 31, 2018 at 12:42:47PM -0700, Jeff Kirsher wrote:
> From: Miroslav Lichvar <mlichvar@redhat.com>
>
> The timecounter needs to be updated at least once per ~550 seconds in
> order to avoid a 40-bit SYSTIM timestamp to be misinterpreted as an old
> timestamp.
>
> Since commit 500462a9d ("timers: Switch to a non-cascading wheel"),
> scheduling of delayed work seems to be less accurate and a requested
> delay of 540 seconds may actually be longer than 550 seconds. Shorten
> the delay to 480 seconds to be sure the timecounter is updated in time.
It looks like this is the v1 of the patch. There was a v2 I sent on
Oct 26, which made the interval even shorter. I can send a separate
patch for that change.
--
Miroslav Lichvar
next prev parent reply other threads:[~2018-11-01 23:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-31 19:42 [net 0/8][pull request] Intel Wired LAN Driver Updates 2018-10-31 Jeff Kirsher
2018-10-31 19:42 ` [net 1/8] igb: shorten maximum PHC timecounter update interval Jeff Kirsher
2018-11-01 14:12 ` Miroslav Lichvar [this message]
2018-10-31 19:42 ` [net 2/8] fm10k: fix SM mailbox full condition Jeff Kirsher
2018-10-31 19:42 ` [net 3/8] fm10k: ensure completer aborts are marked as non-fatal after a resume Jeff Kirsher
2018-10-31 19:42 ` [net 4/8] fm10k: add missing device IDs to the upstream driver Jeff Kirsher
2018-10-31 19:42 ` [net 5/8] fm10k: bump driver version to match out-of-tree release Jeff Kirsher
2018-10-31 19:42 ` [net 6/8] ixgbe/ixgbevf: fix XFRM_ALGO dependency Jeff Kirsher
2018-10-31 19:42 ` [net 7/8] i40e: Update status codes Jeff Kirsher
2018-10-31 19:42 ` [net 8/8] ixgbe: fix MAC anti-spoofing filter after VFLR Jeff Kirsher
2018-11-01 1:23 ` [net 0/8][pull request] Intel Wired LAN Driver Updates 2018-10-31 David Miller
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=20181101141239.GF19434@localhost \
--to=mlichvar@redhat.com \
--cc=davem@davemloft.net \
--cc=jacob.e.keller@intel.com \
--cc=jeffrey.t.kirsher@intel.com \
--cc=netdev@vger.kernel.org \
--cc=nhorman@redhat.com \
--cc=richardcochran@gmail.com \
--cc=sassmann@redhat.com \
/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.