Ingo Molnar wrote:
this is a fixes-only release. Changes since -rt1:
...
- e1000: update to driver 7.3.15-k2 to fix latency problem
Any hint what the "latency problem" was here?
On ARM926 with patch-2.6.19-rt10 we use SMC91C94 ethernet
(smc91x.c). With rt10 applied we get NETDEV WATCHDOG
transmit timouts (see below) while using NFS. We don't get
them without rt patch.
Dirk
Btw: Any idea why /proc/interrupts doesn't look like Figure
8 of http://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO ?
The [........N/ 0] info is missing here.
eth0: SMC91C94 (rev 9) at c2850300 IRQ 160 [nowait]
eth0: Ethernet addr: 00:0e:99:02:02:42
# cat /proc/interrupts
CPU0
...
93: 0 MPU DMA
94: 0 MPU DMA
160: 28 GPIO eth0
164: 1 GPIO spi2.0
197: 0 GPIO serial wakeup
...
# madplay /mnt/nfs/foo.mp3
...
NETDEV WATCHDOG: eth0: transmit timed out
NETDEV WATCHDOG: eth0: transmit timed out
NETDEV WATCHDOG: eth0: transmit timed out
nfs: server 192.0.0.1 not responding, still trying
nfs: server 192.0.0.1 not responding, still trying
NETDEV WATCHDOG: eth0: transmit timed out
nfs: server 192.0.0.1 not responding, still trying
NETDEV WATCHDOG: eth0: transmit timed out
nfs: server 192.0.0.1 not responding, still trying
nfs: server 192.0.0.1 not responding, still trying
nfs: server 192.0.0.1 not responding, still trying
NETDEV WATCHDOG: eth0: transmit timed out
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