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sfc: Implement adaptive IRQ moderation
authorBen Hutchings <bhutchings@solarflare.com>
Fri, 20 Mar 2009 13:30:37 +0000 (13:30 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 22 Mar 2009 02:06:58 +0000 (19:06 -0700)
commit6fb70fd1b57707a5c7b9fb167b7790b2cba13f04
tree311192bd4de07e1da571f1a6ac6a3ad123ab3f50tree | snapshot
parent85451a951b9511605475fadcc0a8d3aeccefded8commit | diff
sfc: Implement adaptive IRQ moderation

Calculate a score for each 1000 IRQs:
- TX completions are worth 1 point
- RX completions are worth 4 if merged using LRO or 2 otherwise

Reduce moderation if the score is less than 10000, down to a minimum
of 5 us.  Increase moderation if the score is more than 20000, up to
the specified maximum.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/sfc/efx.c diff | blob | history
drivers/net/sfc/efx.h diff | blob | history
drivers/net/sfc/ethtool.c diff | blob | history
drivers/net/sfc/falcon.c diff | blob | history
drivers/net/sfc/falcon.h diff | blob | history
drivers/net/sfc/net_driver.h diff | blob | history
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