Francois Romieu wrote:
Alistair John Strachan <[EMAIL PROTECTED]> :
[..]
No, we have not diagnosed the cause of the problem, beyond the swiotlb usage.
I'm adding the r8169 maintainer, linux-net and linux-kernel to CC, to pass on
your information, I hope you don't mind.
swiotlb fragmentation perhaps ?
Switching the driver to be page based on Rx would help then.
[...]
I have a Abit AB9 Pro motherboard with Intel P965 chipset, 4gb of
memory, and two onboard r8169.
Which r8169 model exactly ?
I seem to have been wrong about the kernel update fixing my mtu issue.
I am not 100% sure, but I think 7200 works if the forcedeth system is
sending, but not if the r8169 system is sending.
I tried a mtu of 3000, and basically the same errors, but I did
noticed something interesting. Note the three different byte sizes.
DMA: Out of SW-IOMMU space for 2410 bytes at device 0000:03:00.0
DMA: Out of SW-IOMMU space for 3014 bytes at device 0000:03:00.0
DMA: Out of SW-IOMMU space for 3014 bytes at device 0000:03:00.0
DMA: Out of SW-IOMMU space for 3022 bytes at device 0000:03:00.0
On a side note, leaving the mtu at 1500 seems to work without error,
and I get about the same performance.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
