| Message ID | 20161118185218.16653-1-marex@denx.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Marek, On 11/18/2016 12:52 PM, Marek Vasut wrote: > Enable double-linefill and increase prefetch offset, which gives > considerable read performance boost. The following numbers were > obtained using lmbench 3.0 bw_mem tool, for easier comparison, the > numbers are pasted in two columns. The test machine has Cyclone V > SoC running at 800MHz MPU clock and 512MiB 333MHz 16bit DDR3 DRAM. > > Without patch | With patch > $ for i in rd wr rdwr cp fwr frd fcp bzero bcopy ; do echo $i ; bw_mem 64M $i ; done > rd | rd > 64.00 526.46 | 64.00 1151.06 > wr | wr > 64.00 329.95 | 64.00 346.14 > rdwr | rdwr > 64.00 342.07 | 64.00 367.24 > cp | cp > 64.00 239.79 | 64.00 322.47 > fwr | fwr > 64.00 1027.90 | 64.00 1025.38 > frd | frd > 64.00 322.36 | 64.00 641.89 > fcp | fcp > 64.00 256.99 | 64.00 408.41 > bzero | bzero > 64.00 1028.43 | 64.00 1025.07 > bcopy | bcopy > 64.00 294.73 | 64.00 357.19 > > Signed-off-by: Marek Vasut <marex@denx.de> > Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Applied! Thanks, Dinh
diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi index f2f74b5..d645bef 100644 --- a/arch/arm/boot/dts/socfpga.dtsi +++ b/arch/arm/boot/dts/socfpga.dtsi @@ -694,6 +694,11 @@ prefetch-data = <1>; prefetch-instr = <1>; arm,shared-override; + arm,double-linefill = <1>; + arm,double-linefill-incr = <0>; + arm,double-linefill-wrap = <1>; + arm,prefetch-drop = <0>; + arm,prefetch-offset = <7>; }; mmc: dwmmc0@ff704000 {
Enable double-linefill and increase prefetch offset, which gives considerable read performance boost. The following numbers were obtained using lmbench 3.0 bw_mem tool, for easier comparison, the numbers are pasted in two columns. The test machine has Cyclone V SoC running at 800MHz MPU clock and 512MiB 333MHz 16bit DDR3 DRAM. Without patch | With patch $ for i in rd wr rdwr cp fwr frd fcp bzero bcopy ; do echo $i ; bw_mem 64M $i ; done rd | rd 64.00 526.46 | 64.00 1151.06 wr | wr 64.00 329.95 | 64.00 346.14 rdwr | rdwr 64.00 342.07 | 64.00 367.24 cp | cp 64.00 239.79 | 64.00 322.47 fwr | fwr 64.00 1027.90 | 64.00 1025.38 frd | frd 64.00 322.36 | 64.00 641.89 fcp | fcp 64.00 256.99 | 64.00 408.41 bzero | bzero 64.00 1028.43 | 64.00 1025.07 bcopy | bcopy 64.00 294.73 | 64.00 357.19 Signed-off-by: Marek Vasut <marex@denx.de> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> --- arch/arm/boot/dts/socfpga.dtsi | 5 +++++ 1 file changed, 5 insertions(+)