[syslinux] Very slow download with pxelinux > 4.07 on specific hardware

[Eric PEYREMORTE]

Le 11/03/2014 10:32, Eric PEYREMORTE a écrit :
> Le 11/03/2014 00:56, Gene Cumm a écrit :
>> On Mon, Mar 10, 2014 at 7:55 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
>>> On Mon, Mar 10, 2014 at 7:15 PM, Gene Cumm <gene.cumm at gmail.com> wrote:
>>>> On Mon, Mar 10, 2014 at 6:52 PM, Schlomo Schapiro 
>>>> <schlomo at schapiro.org> wrote:
>>>>> Hi,
>>>>>
>>>>> On 10 March 2014 18:13, Eric PEYREMORTE 
>>>>> <eric.peyremorte at iut-valence.fr>wrote:
>>>>>
>>>>>> Ok i give up. I will stick with the old version version (4.07) 
>>>>>> which works
>>>>>> well with dell 380 and 790.
>>>>>>
>>>>>> I tried to understand what happened between 4.07 and 5 but i 
>>>>>> don't have
>>>>>> the skill to understand low level c.
>>>>>>
>>>>>> Seems that the memory management changed a lot, maybe the 
>>>>>> culprit. But as
>>>>>> many other things changed this is not obvious...
>>>>>>
>>>>> sad to say, we have exactly the same problem. With HTTP downloads 
>>>>> it is
>>>>> much worse, we could not find a stable and reliable version after 
>>>>> 4.x.
>>>>> Sadly nobody wanted to fix our syslinux problem, even as paid 
>>>>> development.
>>>>>
>>>>> I very much hope that the syslinux project will overcome these 
>>>>> obstacles.
>>>>> It would be sad to see all the new development stay unused because 
>>>>> if this.
>>>> It's also a balance of time.  While working on 4.10-pre*/5.10-pre*, I
>>>> found that some hardware misreports its behavior.  "Sure, Interrupts
>>>> work" but they don't is but one that I worked around on specific
>>>> hardware.
>>>>
>>>> -- 
>>>> -Gene
>>> Simple test (and boot failure is an option as long as the core's
>>> messages are intact).  Could both of you try fetching
>>> Syslinux-4.10-pre22 (zip versus tar is your choice), extract out
>>> core/pxelinux.0 and boot with it then record the 4-digit value for
>>> flags (in the "UNDI: baseio" line) and the first 3 octets (6 hex
>>> digits including 0s) of the MAC address and take a reasonable screen
>>> shot (I find a cell phone against a solid object to be pretty decent
>>> when angled to reduce glare and distanced for proper focus) but don't
>>> bother sending the picture yet.  It's possible that the workaround I
>>> utilized can either be having a negative impact or needs to be
>>> extended to more hardware.
>>>
>>> Attached you'll find an image with the two pieces highlighted.
>>>
>>> -- 
>>> -Gene
>
> First, 4.10-pre22 works as well as 4.07 on my dell optiplex 380. It is 
> slow as hell from v5 to 6.03.
> I also tried to put a 3com NIC inside, and the result was the same. 
> But when i put the nic in an optiplex
> 740 it boots fine.
>
> CLIENT MAC ADDR: B8 AC 6F
> UNDI : baseio 0000 int 11 MTU 1500 type 1 "DIX+802.3" flags 0x1c1b
>
> Ps : sorry for the capture quality i had to make a movie and extract a 
> picture cause it was booting too fast.
>
Some news here. I didn't test with 5.01 yet (didn't see that one sorry). 
With 5.01 i don't have any problem. Problems begin with 5.10.
>
>
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-- 
Eric PEYREMORTE
Technicien Informatique - CRI
http://www.iut-valence.fr
T: 04.75.41.88.37