[ipxe-devel] ipxe http download hanging

Geert Stappers stappers at stappers.nl
Fri Dec 30 19:39:04 GMT 2016


On Thu, Dec 29, 2016 at 02:49:32PM +0000, Mike Bryant wrote:
> 
> midway through the download of either the kernel or the initrd, this
> will often (but not always, it sometimes succeeds) hang. (e.g., it
> sits on 19% of the download, and never progresses)
> 
> A tcpdump on the server side indicates that the server has sent a
> bunch of data packets to the client, but is waiting to receive ACKs.
> 
> Running at `DEBUG=tcp:1,httpcore:3,intel:1`, I see it repeating:
> ```
> INTEL 0x9d6dad20 out of transmit descriptors
> TCP 0x9d6e2008 could not transmit 35cc7e85..35cc7e85 8bffaf1e: Error 0x2a654089
> (http://ipxe.org/2a654089)
> ```

That debug output contains URL http://ipxe.org/2a654089 

> 
> It also occasionally outputs
> TCP 0x9d6e2008 sending keepalive
> 
> Though once it gets into this state, no further packets are observed
> via tcpdump on the server.
> 
> I'd appreciate assistance debugging this, I'm happy to provide
> whatever information I can.

Visit http://ipxe.org/2a654089 to see where in the source 
  Error: No buffer space available
originates.


Groeten
Geert Stappers
-- 
Leven en laten leven


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