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| author | Igor Russkikh <igor.russkikh@aquantia.com> | 2017-10-19 18:23:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-21 12:32:24 +0100 |
| commit | 417a3ae4b14909439bb49790f90201f450399845 (patch) | |
| tree | 56acdbb7c39d20a7d56e4b881b6e4c7bc6933e96 | |
| parent | b82ee71a86b0ea66da79a91959d800ffb696a5cb (diff) | |
| download | linux-riscv-417a3ae4b14909439bb49790f90201f450399845.tar.gz linux-riscv-417a3ae4b14909439bb49790f90201f450399845.tar.bz2 linux-riscv-417a3ae4b14909439bb49790f90201f450399845.zip | |
net: aquantia: Bad udp rate on default interrupt coalescing
Default Tx rates cause very long ISR delays on Tx.
0xff is 510us delay, giving only ~ 2000 interrupts per seconds for
Tx rings cleanup. With these settings udp tx rate was never higher than
~800Mbps on a single stream. Changing min delay to 0xF makes it
way better with ~6Gbps
TCP stream performance is almost unaffected by this change, since LSO
optimizations play important role.
CPU load is affected insignificantly by this change.
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c index 11f7e71bf448..ec68c20efcbd 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c @@ -821,12 +821,12 @@ static int hw_atl_b0_hw_interrupt_moderation_set(struct aq_hw_s *self) itr_rx |= rx_max_timer << 0x10U; } else { static unsigned int hw_atl_b0_timers_table_tx_[][2] = { - {0xffU, 0xffU}, /* 10Gbit */ - {0xffU, 0x1ffU}, /* 5Gbit */ - {0xffU, 0x1ffU}, /* 5Gbit 5GS */ - {0xffU, 0x1ffU}, /* 2.5Gbit */ - {0xffU, 0x1ffU}, /* 1Gbit */ - {0xffU, 0x1ffU}, /* 100Mbit */ + {0xfU, 0xffU}, /* 10Gbit */ + {0xfU, 0x1ffU}, /* 5Gbit */ + {0xfU, 0x1ffU}, /* 5Gbit 5GS */ + {0xfU, 0x1ffU}, /* 2.5Gbit */ + {0xfU, 0x1ffU}, /* 1Gbit */ + {0xfU, 0x1ffU}, /* 100Mbit */ }; static unsigned int hw_atl_b0_timers_table_rx_[][2] = { |