Re: htb parallelism on multi-core platforms

Re: htb parallelism on multi-core platforms

[Jesper Dangaard Brouer]

On Thu, 23 Apr 2009, Jarek Poplawski wrote:

> On Thu, Apr 23, 2009 at 09:06:59PM +0200, Jesper Dangaard Brouer wrote:
>> On Thu, 23 Apr 2009, Jarek Poplawski wrote:
>>
>>> Radu Rendec wrote, On 04/23/2009 02:31 PM:
>>>
>>>> On Wed, 2009-04-22 at 23:29 +0200, Jesper Dangaard Brouer wrote:
>>> ...
>>>>> The HTB classify hash has a scalability issue in kernels below 2.6.26.
>>>>> Patrick McHardy fixes that up in 2.6.26.  What kernel version are you
>>>>> using?
>>>>
>>>> I'm using 2.6.26, so I guess the fix is already there :(
>>>
>>> If Jesper meant the change of hash I can see it in 2.6.27 yet.
>>
>> I'm referring to:
>>
>>  commit f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2
>>  Author: Patrick McHardy <kaber@trash.net>
>>  Date:   Sat Jul 5 23:22:35 2008 -0700
>>
>>     net-sched: sch_htb: use dynamic class hash helpers
>>
>> Is there any easy git way to figure out which release this commit got
>> into?
>
> I guess git-describe, but I prefer clicking at the "raw" (X-Git-Tag):
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2

I think I prefer the command line edition "git-describe".  But it seems 
that the two approaches gives a different results.
(Cc'ing the git mailing list as they might know the reason)

  git-describe f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2
  returns "v2.6.26-rc8-1107-gf4c1f3e"

  While you URL returns: "X-Git-Tag: v2.6.27-rc1~964^2~219"

I also did a:
"git log v2.6.26..v2.6.27 | grep f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2"
commit f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2

To Radu: The change I talked about is in 2.6.27, so you should try that 
kernel on you system.

Hilsen
   Jesper Brouer

--
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MSc. Master of Computer Science
Dept. of Computer Science, University of Copenhagen
Author of http://www.adsl-optimizer.dk
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Re: htb parallelism on multi-core platforms

[Jarek Poplawski]

On Thu, Apr 23, 2009 at 09:47:05PM +0200, Jesper Dangaard Brouer wrote:
> On Thu, 23 Apr 2009, Jarek Poplawski wrote:
...
>> I guess git-describe, but I prefer clicking at the "raw" (X-Git-Tag):
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2
>
> I think I prefer the command line edition "git-describe".  But it seems  
> that the two approaches gives a different results.

Probably there is something more needed around this git-describe.
I prefer the command line too when I can remember this command line...

Jarek P.

Re: htb parallelism on multi-core platforms

[Jeff King]

On Thu, Apr 23, 2009 at 09:47:05PM +0200, Jesper Dangaard Brouer wrote:

>>> Is there any easy git way to figure out which release this commit got
>>> into?
>>
>> I guess git-describe, but I prefer clicking at the "raw" (X-Git-Tag):
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=f4c1f3e0c59be0e6566d9c00b1d8b204ffb861a2
>
> I think I prefer the command line edition "git-describe".  But it seems  
> that the two approaches gives a different results.
> (Cc'ing the git mailing list as they might know the reason)

You want "git describe --contains". The default mode for describe is
"you are at tag $X, plus $N commits, and by the way, the sha1 is $H"
(shown as "$X-$N-g$H").

The default mode is useful for generating a unique semi-human-readable
version number (e.g., to be included in your builds).

-Peff