[tulip] Slow transmits in embedded MIPs Linux
Winefred Washington
wwashington@navicent.com
Mon, 12 Feb 2001 10:56:34 -0800
This is a multi-part message in MIME format.
------=_NextPart_000_0070_01C094E2.77342640
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Hello,
My company uses a version of embedded Linux by Lineo in a MIPs based =
product. We have a ST Microelectronics Ethernet chip onboard. The chip =
reports it is running at 100Mb (and the hub agrees); however, we are =
getting a very slow data rate ~12Mb. I suspect we are having a problem =
with a timer interrupt, the HZ variable or jiffies. Does the tulip =
driver depend on some sort of timer interrupt or when send packets or is =
the timer only used for tx timeouts?
Thanks in advance,
Winefred Washington
------=_NextPart_000_0070_01C094E2.77342640
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hello,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>My company uses a version of embedded =
Linux by=20
Lineo in a MIPs based product. We have a ST Microelectronics Ethernet =
chip=20
onboard. The chip reports it is running at 100Mb (and the hub agrees); =
however,=20
we are getting a very slow data rate ~12Mb. I suspect we are having a =
problem=20
with a timer interrupt, the HZ variable or jiffies. Does the tulip =
driver depend=20
on some sort of timer interrupt or when send packets or is the timer =
only used=20
for tx timeouts?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in advance,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Winefred Washington</FONT></DIV>
<DIV> </DIV></BODY></HTML>
------=_NextPart_000_0070_01C094E2.77342640--