Red Hat Bugzilla – Bug 50834
E100 driver exhibits poor performance in IA64 systems
Last modified: 2007-04-18 12:35:27 EDT
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Description of problem:
On a pe7150 w/ fairfax beta3 installed, bios X15, onboard nic controlled by
Nttcp-1.46 run between client and e100 controlled onboard nic on IA64
platform consistently reports speeds of 25-45MB/s on a 100MB network
Eepro100 on IA64 fails completely (see bug 50829)
Both the e100 and eepro100 driver when run on an I386 platform against the
same client produce speeds of 90-95MB/s on a 100MB network.
e100 25-45MB/s 90-95MB/s
eepro100 Dies 90-95MB/s
Steps to Reproduce:
1.Install fairfax beta3 on pe7150 w/ e100 controlling onboard nic
2.Start nttcp-1.46 between client and onboard on a 100MB network
Actual Results: Speeds of 25-45MB/s
Expected Results: Speeds of 90-95MB/s
Bug reported to Intel (Walker, Timothy E [firstname.lastname@example.org]) on 10
August 2001. Tim said he'd pass this on for investigation by the appropriate
What is the e100 driver version?
E100 version 1.6.5, in the beta3 IA64 kernel (2.4.6-3.1)
1) Would be interesting to know if eepro100 still dies on these systems
2) RC1 has a new version of the e100 driver that you can test
E100 performance has not improved with kernel 2.4.9-0.18smp.
Which I believe has e100 driver v1.6.22. I've asked that this be included in
the Dell/RH/Intel 3-way call (which isn't on for this week after all). Does
anyone know if Intel is actively working this issue?
The problem here is swiommu performance -- the swiommu is a hack which
doesn't actually perform very well at all. We are working on a patch
which gives the same functionality as swiommu with much higher performance
and our initial tests look very good, with some bugs still to be worked
w/ qa1108 (2.4.9-13.3smp) e100 driven nics reporting speeds of 95MB/s sustained
95Mbit sustained sounds like fixed to me...