(sorry for the repost, I guess there aren't many eyes on ppc@)
Has anyone else noticed extremely poor performance with gem(4)
devices, particularly on the Mac Mini G4?
dmesg is below, but the summary is that I have a gem(4), and after
finally being fed up with the poor performance I plugged in an old axe
(4) that I had lying around:
gem0 at pci2 dev 15 function 0 "Apple Uni-N2 GMAC" rev 0x80: irq 41,
address 00:0d:93:60:bd:36
bmtphy0 at gem0 phy 0: BCM5221 100baseTX PHY, rev. 4
axe0 at uhub5 port 2 configuration 1 interface 0
axe0: Linksys USB 2.0 10/100 ethernet controller, rev 2.00/0.01, addr
2, AX88172, address 00:10:60:25:d0:17
rlphy0 at axe0 phy 3: RTL8201L 10/100 PHY, rev. 1
Using scp(1) on the local network I was seeing about 100KB/s transfer
rates (according to scp(1)). I was also noticing that large images
were taking a long time to load on the websites I am serving off this
machine, even for machines directly connected to the same 100baseTX
switch. I ruled out the hard drive as the performance problem by
doing several scp operations to /dev/null. The transfer rate was
exactly the same. I also noticed that if I had a long-running scp
transfer that responses to keyboard input were sluggish, both on the
directly attached keyboard & mouse, and through ssh sessions.
So I plugged in the axe(4) and repeated the tests, and I was getting
2MB/s - 4MB/s. Still terrible, but much better than the built-in gem
(4). All images on the website load *immediately* now, very, very
noticeably faster than previous. There is also no sluggishness when
the network is busy.
Are there any known problems with gem(4) on Macs, or is this likely a
case of bad hardware? The cable and switch are both fine. I'm using
the same connections with the axe(4) and it's working fine (although
at expected USB speeds).
[ using 357352 bytes of bsd ELF symbol table ]
console out [ATY,RockHopper2_A]console in [keyboard] USB found
using parent ATY,RockHopper2Paren:: memaddr 98000000 size 8000000, :
consaddr 9c008000, : ioaddr 90020000, size 20000: memtag 8000, iotag
8000: width 640 linebytes 768 height 480 depth 8
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights
reserved.
Copyright (c) 1995-2006 OpenBSD. All rights reserved. http://
www.OpenBSD.org
OpenBSD 4.0-stable (GENERIC) #0: Fri Nov 10 15:06:55 PST 2006
[EMAIL PROTECTED]:/usr/src/sys/arch/macppc/compile/GENERIC
real mem = 268435456 (262144K)
avail mem = 235343872 (229828K)
using 1254 buffers containing 13418496 bytes (13104K) of memory
mainbus0 (root): model PowerMac10,1
cpu0 at mainbus0: 7447A (Revision 0x102): 1416 MHz: 512KB L2 cache
memc0 at mainbus0: uni-n
"hw-clock" at memc0 not configured
ki2c0 at memc0 offset 0xf8001000
iic0 at ki2c0
mpcpcibr0 at mainbus0 pci: uni-north, Revision 0xff
pci0 at mpcpcibr0 bus 0
pchb0 at pci0 dev 11 function 0 "Apple UniNorth AGP" rev 0x00
vgafb0 at pci0 dev 16 function 0 "ATI Radeon 9200" rev 0x01, mmio
wsdisplay0 at vgafb0 mux 1: console (std, vt100 emulation)
mpcpcibr1 at mainbus0 pci: uni-north, Revision 0x5
pci1 at mpcpcibr1 bus 0
pchb1 at pci1 dev 11 function 0 "Apple UniNorth PCI" rev 0x00
macobio0 at pci1 dev 23 function 0 "Apple Intrepid" rev 0x00
openpic0 at macobio0 offset 0x40000: version 0x4614
macgpio0 at macobio0 offset 0x50
"modem-reset" at macgpio0 offset 0x1d not configured
"modem-power" at macgpio0 offset 0x1c not configured
macgpio1 at macgpio0 offset 0x9 irq 47
"programmer-switch" at macgpio0 offset 0x11 not configured
"gpio5" at macgpio0 offset 0x6f not configured
"gpio6" at macgpio0 offset 0x70 not configured
"extint-gpio15" at macgpio0 offset 0x67 not configured
"escc-legacy" at macobio0 offset 0x12000 not configured
zsc0 at macobio0 offset 0x13000: irq 22,23
zstty0 at zsc0 channel 0
zstty1 at zsc0 channel 1
aoa0 at macobio0 offset 0x10000: irq 30,1,2
audio0 at aoa0
"timer" at macobio0 offset 0x15000 not configured
adb0 at macobio0 offset 0x16000 irq 25: via-pmu, 0 targets
apm0 at adb0: battery flags 0x0, 0% charged
pi2c0 at adb0
iic1 at pi2c0
maxtmp0 at iic1 addr 0xc8: max6642
ki2c1 at macobio0 offset 0x18000
iic2 at ki2c1
wdc0 at macobio0 offset 0x20000 irq 24: DMA
ohci0 at pci1 dev 24 function 0 "Apple Intrepid USB" rev 0x00: irq 0,
version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ohci1 at pci1 dev 25 function 0 "Apple Intrepid USB" rev 0x00: irq 0,
version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
ohci2 at pci1 dev 26 function 0 "Apple Intrepid USB" rev 0x00: irq
29, version 1.0, legacy support
usb2 at ohci2: USB revision 1.0
uhub2 at usb2
uhub2: Apple OHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ohci3 at pci1 dev 27 function 0 "NEC USB" rev 0x43: irq 63, version 1.0
usb3 at ohci3: USB revision 1.0
uhub3 at usb3
uhub3: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub3: 3 ports with 3 removable, self powered
ohci4 at pci1 dev 27 function 1 "NEC USB" rev 0x43: irq 63, version 1.0
usb4 at ohci4: USB revision 1.0
uhub4 at usb4
uhub4: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub4: 2 ports with 2 removable, self powered
ehci0 at pci1 dev 27 function 2 "NEC USB" rev 0x04: irq 63
usb5 at ehci0: USB revision 2.0
uhub5 at usb5
uhub5: NEC EHCI root hub, rev 2.00/1.00, addr 1
uhub5: 5 ports with 5 removable, self powered
mpcpcibr2 at mainbus0 pci: uni-north, Revision 0x6
pci2 at mpcpcibr2 bus 0
pchb2 at pci2 dev 11 function 0 "Apple UniNorth PCI" rev 0x00
kauaiata0 at pci2 dev 13 function 0 "Apple Intrepid ATA" rev 0x00
wdc1 at kauaiata0 irq 39: DMA
wd0 at wdc1 channel 0 drive 0: <ST9808210A>
wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
atapiscsi0 at wdc1 channel 0 drive 1
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <MATSHITA, CD-RW CW-8123, CAD4> SCSI0 5/
cdrom removable
wd0(wdc1:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
cd0(wdc1:0:1): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
"Apple UniNorth Firewire" rev 0x81 at pci2 dev 14 function 0 not
configured
gem0 at pci2 dev 15 function 0 "Apple Uni-N2 GMAC" rev 0x80: irq 41,
address 00:0d:93:60:bd:36
bmtphy0 at gem0 phy 0: BCM5221 100baseTX PHY, rev. 4
axe0 at uhub5 port 2 configuration 1 interface 0
axe0: Linksys USB 2.0 10/100 ethernet controller, rev 2.00/0.01, addr
2, AX88172, address 00:10:60:25:d0:17
rlphy0 at axe0 phy 3: RTL8201L 10/100 PHY, rev. 1
uhidev0 at uhub3 port 1 configuration 1 interface 0
uhidev0: Tangtop USBPS2, rev 1.10/0.01, addr 2, iclass 3/1
ukbd0 at uhidev0: 8 modifier keys, 6 key codes
wskbd0 at ukbd0: console keyboard, using wsdisplay0
uhidev1 at uhub3 port 1 configuration 1 interface 1
uhidev1: Tangtop USBPS2, rev 1.10/0.01, addr 2, iclass 3/1
uhidev1: 3 report ids
ums0 at uhidev1 reportid 1: 5 buttons and Z dir.
wsmouse0 at ums0 mux 0
uhid0 at uhidev1 reportid 2: input=2, output=0, feature=0
uhid1 at uhidev1 reportid 3: input=1, output=0, feature=0
bootpath: '/[EMAIL PROTECTED]/[EMAIL PROTECTED]/[EMAIL PROTECTED]/bsd'
boot device: wd0.
root on wd0a
rootdev=0x0 rrootdev=0xb00 rawdev=0xb02
--
bk
