eth0 memory sqeeze

Wolfgang Denk wd at
Sun Feb 1 20:30:38 EST 2004

In message <20040201072141.70E12430AB at> you wrote:
> I am using the Linux On MPC860T as your instructions. Now I want to do a
> performance test
> of PPC with linux. Our board is FADS and MPC860T.
> I use the kernel from denx website(2.4.4). the test
> program is iperf.
> When I use the iperf on PPC+linux as server, I start the iperf on PC as
> client. I choose the options -n 300M -P 120 which mean I want to open 120
> threads each one open a TCP connection and each preparing to send 300MB
> data. On PPC+linux I get the  following output.
> "eth0: Memory squeeze,dropping packet"
> "__alloc_pages: 0-order allocation failed (gfp=0x20/0)
> I guess that the data to be processed exceeds the capabilities of PPC+linux.

No, it does not exceed the capabilities of Linux or PowerPC, but that
of your specific system.

> I wonder whether this could be solved by Linux ???

Add more memory to your system.

Best regards,

Wolfgang Denk

See us @ Embedded World, Nuremberg, Feb 17 - 19,  Hall 12.0 Booth 440
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at
Bus error -- driver executed.

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