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From: jamal <hadi@cyberus.ca>
To: "Edgar E. Iglesias" <edgar.iglesias@axis.com>
Cc: Jesse Brandeburg <jesse.brandeburg@gmail.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	David Miller <davem@davemloft.net>,
	shemminger@osdl.org, mchan@broadcom.com,
	jesse.brandeburg@intel.com, auke-jan.h.kok@intel.com,
	netdev@vger.kernel.org
Subject: Re: [PATCH] [e1000]: Remove unnecessary tx_lock
Date: Mon, 07 Aug 2006 15:34:30 -0400	[thread overview]
Message-ID: <1154979270.5446.97.camel@jzny2> (raw)
In-Reply-To: <20060807191413.GB10909@edgar.underground.se.axis.com>

On Mon, 2006-07-08 at 21:14 +0200, Edgar E. Iglesias wrote:

> > If yes, what is the likelihood they will sit there forever? I think
> > perhaps some TX interupts will happen, no?
> 
> with jamal undefined, absolutely. With jamal defined, TX interrupts will come
> but I couldnt find a way into e1000_prune_tx_ring unless fdesc met the 
> conditions. Correct? 
> 

Forgive me since i am still missing something ..

Observe that the same threshold used in two different ways:

1) in tx path tx_ring->prunet is to check on when we should _start_ to
prune.
2) on rx path tx_ring->prunet is to check when to _stop_ pruning.

i.e #1 is a preemptive action.

You seem to suggest doing it the way i was it made things worse?

Note that TX interrupts will happen as long as you dont prune some
descriptors (I am assuming this, I havent checked the settings).

cheers,
jamal



  reply	other threads:[~2006-08-07 19:34 UTC|newest]

Thread overview: 85+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-03 13:15 [PATCH] [e1000]: Remove unnecessary tx_lock jamal
2006-08-03 14:02 ` Herbert Xu
2006-08-03 14:24   ` jamal
2006-08-03 16:36   ` Brandeburg, Jesse
2006-08-03 18:05     ` Michael Chan
2006-08-03 22:08       ` jamal
2006-08-04  0:09         ` Michael Chan
2006-08-04  1:10           ` Herbert Xu
2006-08-04  8:37             ` Herbert Xu
2006-08-04 10:10               ` Herbert Xu
2006-08-04 10:16                 ` jamal
2006-08-04 10:25                   ` Herbert Xu
2006-08-04 10:45                     ` jamal
2006-08-05 23:04                     ` jamal
2006-08-05 23:06                       ` Herbert Xu
2006-08-05 23:21                         ` jamal
2006-08-05 23:30                           ` Herbert Xu
2006-08-05 16:45                   ` jamal
2006-08-04 17:12                 ` Stephen Hemminger
2006-08-04 17:28                 ` Michael Chan
2006-08-04 18:08                   ` Stephen Hemminger
2006-08-04 23:31                     ` David Miller
2006-08-05 16:56                       ` jamal
2006-08-05 23:05                         ` Herbert Xu
2006-08-05 23:17                           ` jamal
2006-08-05 23:19                             ` Herbert Xu
2006-08-05 23:36                               ` jamal
2006-08-06  2:51                                 ` Herbert Xu
2006-08-06  7:14                                   ` Edgar E. Iglesias
2006-08-06  7:24                                     ` Herbert Xu
2006-08-06  7:30                                       ` Edgar E. Iglesias
2006-08-06  7:26                                     ` David Miller
2006-08-06  7:36                                       ` Herbert Xu
2006-08-06  8:06                                         ` Edgar E. Iglesias
2006-08-06  8:27                                           ` Herbert Xu
2006-08-06  9:03                                             ` Edgar E. Iglesias
2006-08-06  9:10                                               ` Herbert Xu
2006-08-06  9:18                                                 ` Edgar E. Iglesias
2006-08-06  8:35                                         ` David Miller
2006-08-06 12:24                                   ` jamal
2006-08-06 12:33                                     ` jamal
2006-08-06 23:16                                       ` Jesse Brandeburg
2006-08-07 12:50                                         ` jamal
2006-08-07 15:21                                           ` Edgar E. Iglesias
2006-08-07 15:40                                             ` jamal
2006-08-07 15:59                                               ` Edgar E. Iglesias
2006-08-07 16:31                                                 ` Jamal Hadi Salim
2006-08-07 17:04                                                   ` Edgar E. Iglesias
2006-08-07 18:00                                                     ` jamal
2006-08-07 18:47                                                       ` Edgar E. Iglesias
2006-08-07 19:03                                                         ` jamal
2006-08-07 19:14                                                           ` Edgar E. Iglesias
2006-08-07 19:34                                                             ` jamal [this message]
2006-08-07 20:28                                                               ` Edgar E. Iglesias
2006-08-08  0:52                                                                 ` jamal
2006-08-07 20:53                                                           ` Brandeburg, Jesse
2006-08-08  1:07                                                             ` jamal
2006-08-07 23:23                                                           ` Herbert Xu
2006-08-07 23:35                                                             ` Brandeburg, Jesse
2006-08-07 23:40                                                               ` Herbert Xu
2006-08-07 16:29                                               ` Edgar E. Iglesias
2006-08-07 16:36                                                 ` jamal
2006-08-06 19:22                                     ` jamal
2006-08-08  1:19                                     ` jamal
2006-08-08  1:22                                       ` Herbert Xu
2006-08-08  1:33                                         ` jamal
2006-08-08  2:17                                           ` Herbert Xu
2006-08-08  3:10                                             ` jamal
2006-08-08 12:21                                   ` jamal
2006-08-08 12:39                                     ` Herbert Xu
2006-08-06 17:20                           ` Michael Chan
2006-08-06 23:04                             ` Herbert Xu
2006-08-07  3:56                               ` Michael Chan
2006-08-07  4:21                                 ` Herbert Xu
2006-08-08 17:04                       ` Benjamin LaHaise
2006-08-08 22:06                         ` David Miller
2006-08-08 23:21                           ` Benjamin LaHaise
2006-08-09  0:25                             ` Herbert Xu
2006-08-09  1:25                               ` Benjamin LaHaise
2006-08-04  1:16           ` jamal
2006-08-04  1:18             ` Herbert Xu
2006-08-04  1:25               ` jamal
2006-08-04  4:06             ` Michael Chan
2006-08-03 22:06     ` jamal
  -- strict thread matches above, loose matches on Subject: below --
2006-08-08  5:43 Brandeburg, Jesse

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