[syslinux] Syslinux 4.04 gpxelinux.0 http performance problem with VMware VMs

[Gene Cumm]

On Tue, Sep 18, 2012 at 5:38 AM, Gene Cumm <gene.cumm at gmail.com> wrote:
> On Sep 17, 2012 6:18 PM, "H. Peter Anvin" <hpa at zytor.com> wrote:
>>
>> On 09/17/2012 10:22 AM, Pasi Kärkkäinen wrote:
>> >
>> > I upgraded syslinux to benchmark the latest 4.10-pre22, but when using
>> > pxelinux.0
>> > from 4.10-pre22 I get this error:
>> >
>> > ..
>> > Trying to load: pxelinux.cfg/01-mac-address
>> >
>> > netconn_write error -5
>> > LWIP(lwip/src/api/api_msg.c,831,0x00107b79): blocking connect in
>> > progress
>> > Boot failed: prss a key to retry, or wait for reset...
>> >
>> >
>> > Using pxelinux.0 from syslinux 4.10-pre20 works OK with the same
>> > config/setup.
>> >
>> > Any ideas?
>> >
>> > Thanks,
>> >
>>
>> Hi Gene,
>>
>> I suspect this is related to the lwip update... any chance you might be
>> able to look at it?
>
> Yes.
>
> --Gene

First glance shows the precompiled 4.10-pre22 pxelinux.0 binary as
functional on one VMware platform loading when config from TFTP within
the local NAT vmnet.

Could I get more details?  Still 1 subnet as before?  All in 1 vSwitch
or does it go out to a physical network?  Is your config on TFTP or
HTTP (with one of the DHCP options)?  Which vNIC?  VMXNET3 still?
Tried e1000/e1000e?  What VMware product is your host system running?
Build number would be nice.

-- 
-Gene