On 6/20/06, Linas Vepstas <[EMAIL PROTECTED]> wrote:
Hi, I sat down to do some testing of the ixgb driver a few days ago, and get failures within seconds. From what I can tell, I'm getting either a DMA to a bad address or some other PCI bus error, not sure which. The problem appears to happen only for the driver that's in 2.6.17-rc6-mm2. As a sanity check, I'm testing the SuSE SLES10 beta, which is 2.6.16 based, and it doesn't seem to have any problems. My test is dirt-simple: telnet to the chargen port. After an eyeblink, I get the pci bus error, that's that. "eyeblink" is after about 300MBytes transfered. That was with a driver with NAPI enabled. I tried again with NAPI disabled, and got to about 1.8 GB transfered in two eyeblinks. To make sure that I'm not dealing with faulty hardware, I tried the same thing w/ SLES10 2.6.16.18-1.8 and have gotten to RX bytes:20889480686 (19921.7 Mb) so far, with no problems. I don't have easy access to a PCI bus analyzer, otherwise, I'd tell you more. Ideas? Suggestions? I could try taking the diff between these two driver versions, and seeing what change caused the problem, but thought I should email first, before doing that.
For some reason I didn't get your mail at intel yet. anyway, please try disabling TSO using ethtool and see if that helps any. you're running 1.0.109, correct? what does cat /proc/interrupts say (are you running MSI?) I'd also like to know if LLTX support (recently added) is causing you the issue. What hardware platform? pSeries? does it EEH? what does the dump say? - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
