2.4 and 2.5 Problem ne.c driver
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.
perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
Quoted 10 lines · kris
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
After other tries, the ne.c file is buggy. Confirmation. I investigate. Anyone helps me ?
regards
Christophe
Quoted 8 lines · Christophe Devalquenaire
Quoted 7 lines · kris
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.
Quoted 5 lines
Quoted 2 lines
perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
After other tries, the
ne.cfile is buggy. Confirmation. I investigate. Anyone helps me ?
Do you have evidence of a specific problem?
Or the same hardware running faster with other drivers or kernel versions?
This sounds as if you are just running out of ISA bus bandwidth...
Signature · 4 lines
Donald Becker [email protected] Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Second Generation Beowulf Clusters Annapolis MD 21403 410-990-9993
Hi,
Quoted 1 line · Donald Becker
This sounds as if you are just running out of ISA bus bandwidth...
Can you explain why it's unidirectional then?
Thunder
Signature · 4 lines
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Quoted 6 lines · Thunder from the hill
Hi,
Quoted 1 line · Donald Becker
This sounds as if you are just running out of ISA bus bandwidth...
Can you explain why it's unidirectional then?
Unidirectional what? Sorry, guess I didn't understand your question.
Signature · 2 lines
Vojtech Pavlik SuSE Labs
Quoted 13 lines · Donald Becker
Quoted 11 lines · Christophe Devalquenaire
Quoted 9 lines · kris
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
Quoted 7 lines
Quoted 2 lines
After other tries, the
ne.cfile is buggy. Confirmation. I investigate. Anyone helps me ?Do you have evidence of a specific problem?
Or the same hardware running faster with other drivers or kernel versions?This sounds as if you are just running out of ISA bus bandwidth...
My configuration : a server with 2 cards NE2000(10 Mbps), a machine with 2 cards : 1 NE2000(ISA) and 1 3C905b(PCI).
server : NE2000 <-> workstation : NE2000 in 192.168.1.X server : NE2000 <-> workstation : 3C905b in 192.168.0.X
I try with a 2.4.6, 2.4.15, and 2.5.31. there is near from no differences in the code of ne.c, gkrellm tells me that when I download on both cards big files (for tests), the bandwidth falls to 5Mbps for each card.
If 1 download stops, the other bandwidth is up to 10Mbps immediatly.
No other ISA card is used on the server.
Quoted 27 lines · Christophe Devalquenaire
Quoted 13 lines · Donald Becker
Quoted 11 lines · Christophe Devalquenaire
Quoted 9 lines · kris
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
Quoted 7 lines
Quoted 2 lines
After other tries, the
ne.cfile is buggy. Confirmation. I investigate. Anyone helps me ?Do you have evidence of a specific problem?
Or the same hardware running faster with other drivers or kernel versions?This sounds as if you are just running out of ISA bus bandwidth...
My configuration : a server with 2 cards NE2000(10 Mbps), a machine with 2 cards : 1 NE2000(ISA) and 1 3C905b(PCI).
server : NE2000 <-> workstation : NE2000 in 192.168.1.X server : NE2000 <-> workstation : 3C905b in 192.168.0.X
Quoted 7 lines
I try with a 2.4.6, 2.4.15, and 2.5.31. there is near from no differences in the code of
ne.c, gkrellm tells me that when I download on both cards big files (for tests), the bandwidth falls to 5Mbps for each card.
If 1 download stops, the other bandwidth is up to 10Mbps immediatly.No other ISA card is used on the server.
ISA has a maximum bandwidth usually about a megabyte per second in PIO (io-port, which the NE2k uses) mode. That's 10MBps. With two cards, i gets evenly distributed. What's so surprising here?
Signature · 2 lines
Vojtech Pavlik SuSE Labs
Quoted 8 lines
ISA has a maximum bandwidth usually about a megabyte per second in PIO (io-port, which the NE2k uses) mode. That's 10MBps. With two cards, i gets evenly distributed. What's so surprising here?
--
Vojtech Pavlik
SuSE Labs
ok, thanks
Quoted 9 lines · kris
Quoted 5 lines · kris
I have 2 ne2000 isa cards (10Mbps for each) and with this versions of kernel the bandwith is divided by 2. So 2*5Mbps = 10Mbps instead of 2*10Mbps=20Mbps.
I try to fix the pbm.perhaps a bug exists on the dispatcher when 2 identical cards exist. Anyone have 2 identical cards for test ?
The ISA bus is a cause of the speed limit.
Signature · 2 lines
Vojtech Pavlik SuSE Labs