From: Scott Feldman <sfeldma@pobox.com>
To: "Brandeburg, Jesse" <jesse.brandeburg@intel.com>
Cc: "Chilakala, Mallikarjuna" <mallikarjuna.chilakala@intel.com>,
"Venkatesan, Ganesh" <ganesh.venkatesan@intel.com>,
<netdev@oss.sgi.com>
Subject: Re: [PATCH net-drivers-2.6 5/6] e100: Performance optimizations to e100 Tx Path
Date: Thu, 21 Apr 2005 12:17:56 -0700 [thread overview]
Message-ID: <70101da07ff38bf0de89894e91987702@pobox.com> (raw)
In-Reply-To: <C925F8B43D79CC49ACD0601FB68FF50C03B1A474@orsmsx408>
On Apr 21, 2005, at 11:59 AM, Brandeburg, Jesse wrote:
>> Where is this 256us delay coming from?
>
> Turning off the 'I' bit allows the transmit interrupt moderation to
> come
> on, and setting the cid (which was already set) to all 1's indicates
> the
> max delay (256 us)
This makes sense. I forgot about the cid delay. I was afraid the "CPU
Saver" microcode was coming back. Thanks Jesse.
-scott
next prev parent reply other threads:[~2005-04-21 19:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-21 18:59 [PATCH net-drivers-2.6 5/6] e100: Performance optimizations to e100 Tx Path Brandeburg, Jesse
2005-04-21 19:17 ` Scott Feldman [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-04-20 5:50 Malli Chilakala
2005-04-21 3:05 ` Randy.Dunlap
2005-04-21 16:51 ` Ganesh Venkatesan
2005-04-21 17:10 ` Randy.Dunlap
2005-04-21 16:55 ` Scott Feldman
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