From: Rick Jones <rick.jones2@hp.com>
To: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Cc: Ben Greear <greearb@candelatech.com>, NetDev <netdev@vger.kernel.org>
Subject: Re: Getting physical packet counts with LRO enabled with ixgbe?
Date: Wed, 23 Sep 2009 12:03:01 -0700 [thread overview]
Message-ID: <4ABA70E5.9070404@hp.com> (raw)
In-Reply-To: <1253731834.2538.32.camel@localhost.localdomain>
>>Next time you guys re-compile your hardware, please consider adding byte counters :)
>
>
> On 10G adapters, byte counters can skyrocket quickly, so we'd need to
> read them often to avoid them wrapping.
10G Ethernet is ~1.16 GB/s (GiB/s for purists I guess) for simplicity, call that
2GB/s or 2^31 bytes per second. If the counter is 64 bits, that would suggest
wrap in 2^64/2^31 or 2^33 seconds right? Or have I made some nasty math error?
I'm having quit a difficult time imagining that someone would have 32 bit
counters in a 10G NIC.
rick jones
next prev parent reply other threads:[~2009-09-23 19:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-23 16:40 Getting physical packet counts with LRO enabled with ixgbe? Ben Greear
2009-09-23 18:32 ` Peter P Waskiewicz Jr
2009-09-23 18:46 ` Ben Greear
2009-09-23 18:50 ` Peter P Waskiewicz Jr
2009-09-23 18:56 ` Ben Greear
2009-09-23 19:03 ` Rick Jones [this message]
2009-09-25 21:45 ` Herbert Xu
2009-09-25 21:50 ` Ben Greear
2009-09-25 21:59 ` David Miller
2009-09-25 22:01 ` Herbert Xu
2009-09-25 22:12 ` Ben Greear
2009-09-25 22:40 ` Peter P Waskiewicz Jr
2009-09-25 22:09 ` Herbert Xu
2009-09-25 21:56 ` Peter P Waskiewicz Jr
2009-09-25 22:10 ` Herbert Xu
2009-09-23 21:37 ` Ben Greear
2009-09-23 21:56 ` Ben Greear
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=4ABA70E5.9070404@hp.com \
--to=rick.jones2@hp.com \
--cc=greearb@candelatech.com \
--cc=netdev@vger.kernel.org \
--cc=peter.p.waskiewicz.jr@intel.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.