Eric PEYREMORTE
2014-Feb-24 16:13 UTC
[syslinux] Very slow download with pxelinux > 4.07 on specific hardware
Hi there, We had to setup a pxelinux on a new server (windows 2012) and used the latest release of pxelinux 6.0.2. Everything went ok on my first client test machine : dell optiplex 740. Pxe was really fast (vesamenu with large background image was appearing in less than 3 secondes) But on different client machine i got different results : On optiplex 790 (core i5 with intel 82579 nic) and 380 (core 2 duo with bcm 57xx), it takes 1 minute for the menu to appear. On optiplex 7010(core i5 92579lm), it is as fast as with optiplex 740. At the beginning i thought it was because my newer machine were on an efi bios, but the 7010 is too and i have no problem(i always use legacy boot). With pxelinux 4.0.7, everything is running smooth. I think i'll stick with this version. But i think i'm loosing some interesting features... Any clue ? -- Cheers, Eric
Gene Cumm
2014-Feb-24 17:16 UTC
[syslinux] Very slow download with pxelinux > 4.07 on specific hardware
On Mon, Feb 24, 2014 at 11:13 AM, Eric PEYREMORTE <eric.peyremorte at iut-valence.fr> wrote:> Hi there, > > We had to setup a pxelinux on a new server (windows 2012) and used the > latest release of pxelinux 6.0.2. > > Everything went ok on my first client test machine : dell optiplex 740. Pxe > was really fast (vesamenu with large background image was appearing in less > than 3 secondes) > > But on different client machine i got different results : > > On optiplex 790 (core i5 with intel 82579 nic) and 380 (core 2 duo with bcm > 57xx), it takes 1 minute for the menu to appear. > > On optiplex 7010(core i5 92579lm), it is as fast as with optiplex 740. > > At the beginning i thought it was because my newer machine were on an efi > bios, but the 7010 is too and i have no problem(i always use legacy boot). > > With pxelinux 4.0.7, everything is running smooth. I think i'll stick with > this version. But i think i'm loosing some interesting features... > > Any clue ?Have you checked if any BIOS/Firmware updates the PXE OROM on these systems? 6.03-pre2 was just released last night and may also be worth testing. lpxelinux.0 uses lwIP instead of the traditional API calls and might be another point worth testing. -- -Gene
Eric PEYREMORTE
2014-Feb-24 21:28 UTC
[syslinux] Very slow download with pxelinux > 4.07 on specific hardware
Yes on optiplex 790 i upgraded from A07 to A18 (there was a nic upgrade) but it didn't change anything.. On optiplex 380 i upgraded from bios A01 to A07(don't know if upgrade contained pxe or not)... I tried, lpxelinux.0 and it wasn't faster. Only v4.07 helped on these machines. Tomorrow, i will give a try with 6.03pre2. In wireshark, i saw no errors, the packet length was the same on a fast and a slow machine, the only thing that changed was the number of packet per second. I didn't measure exactly, but when a fast machine was receiving a tftp packet each 0.003 second, the slow one did each 0.02 s. I can send you a wireshark trace if you want. I know it's not easy for you to help remotely, so is there any trace i can produce ? some option to make it more verbose ? I saw debug.c32, but it seems to intervene later in the process. Cheers, Eric ps : sorry for my bad english :-( Le 24/02/2014 18:16, Gene Cumm a ?crit :> On Mon, Feb 24, 2014 at 11:13 AM, Eric PEYREMORTE > <eric.peyremorte at iut-valence.fr> wrote: >> Hi there, >> >> We had to setup a pxelinux on a new server (windows 2012) and used the >> latest release of pxelinux 6.0.2. >> >> Everything went ok on my first client test machine : dell optiplex 740. Pxe >> was really fast (vesamenu with large background image was appearing in less >> than 3 secondes) >> >> But on different client machine i got different results : >> >> On optiplex 790 (core i5 with intel 82579 nic) and 380 (core 2 duo with bcm >> 57xx), it takes 1 minute for the menu to appear. >> >> On optiplex 7010(core i5 92579lm), it is as fast as with optiplex 740. >> >> At the beginning i thought it was because my newer machine were on an efi >> bios, but the 7010 is too and i have no problem(i always use legacy boot). >> >> With pxelinux 4.0.7, everything is running smooth. I think i'll stick with >> this version. But i think i'm loosing some interesting features... >> >> Any clue ? > Have you checked if any BIOS/Firmware updates the PXE OROM on these > systems? 6.03-pre2 was just released last night and may also be worth > testing. lpxelinux.0 uses lwIP instead of the traditional API calls > and might be another point worth testing. >
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