I've tried to tune gianfar driver in various ways... and it gave
some positive results with this patch:
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index fd487be..b5943f9 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -123,8 +123,8 @@ extern const char gfar_driver_version[];
#define GFAR_10_TIME 25600
#define DEFAULT_TX_COALESCE 1
-#define DEFAULT_TXCOUNT 16
-#define DEFAULT_TXTIME 21
+#define DEFAULT_TXCOUNT 80
+#define DEFAULT_TXTIME 105
#define DEFAULT_RXTIME 21
No ethtool coalescing tuning support for gianfar?-)
Yeah, there's coalescing tuning in gianfar.
Anton, those numbers aren't too surprising on a 400 MHz machine, I
think. But I'd be happy to see any analysis on performance
bottlenecks in the driver. And patches to fix those bottlenecks are
even better! :)
Andy
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