Pete Vickers a icrit :

quoted text
> I'm trying to track down the cause of poor network performance under

> OpenBSD4.0/i386 on HP Proliants (DL380-G4 and DL360-G4p), which seems to

> be concerning ethernet 802.3x flow control on the bge NICs.

>

> Test topology is:

>

> HP DL380-G4

>   int bge0 (BCM5704C auto at 1000baseT full-duplex)

>     |

>     |

>   int Gig 13/6  (auto at 1000baseT full-duplex)

> Cisco 6513 chassis + WS-X6548-GE-TX + WS-X6748-GE-TX

>   int Gig 12/47 (auto at 1000baseT full-duplex)

>     |

>     |

>   int bge0 (BCM5704C auto at 1000baseT full-duplex)

> HP DL360-G4p

[...]
> Has anyone an ideas on fixes for this, or how to debug the issue further ?
Did you tweek kernel parameters, like net.inet.ip.ifq.maxlen ?

What is the CPU usage during the transfer ?

Did you try with autonegotiation off, and with speed fixed at 1000base-T

FD on each port ?
--

Ronnie Garcia