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| author | Aleksander Jan Bajkowski <A.Bajkowski@stud.elka.pw.edu.pl> | 2020-02-05 20:31:00 +0100 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2020-02-13 17:45:46 +0100 |
| commit | 5499b24dc01918a1e46c365537a4b4a07909e984 (patch) | |
| tree | 5da5f0bd18c2f240c0c85651d82306ffd48bad9e /target/linux/brcm2708/patches-4.19/950-0440-Fixed-48k-timing-issue.patch | |
| parent | fbd00bb8d406a0ace7ea9c49a79cbad2418689a5 (diff) | |
| download | upstream-5499b24dc01918a1e46c365537a4b4a07909e984.tar.gz upstream-5499b24dc01918a1e46c365537a4b4a07909e984.tar.bz2 upstream-5499b24dc01918a1e46c365537a4b4a07909e984.zip | |
sunxi: backport increased SATA/AHCI DMA TX/RX FIFOs
This backports SATA performance boost from 5.3 kernel:
Increasing the SATA/AHCI DMA TX/RX FIFOs (P0DMACR.TXTS and .RXTS, ie.
TX_TRANSACTION_SIZE and RX_TRANSACTION_SIZE) from default 0x0 each to
0x3 each, gives a write performance boost of 120 MiB/s to 132 MiB/s from
lame 36 MiB/s to 45 MiB/s previously. Read performance is above 200
MiB/s. [tested on SSD using dd bs=4K/8K/12K/16K/20K/24K/32K: peak-perf
at 12K]
dd bs Before MB/s After MB/s Increase
4k 14.4 16.5 15%
64k 34.5 74.4 116%
1M 40.5 93.2 130%
Ref: https://forum.openwrt.org/t/sunxi-sata-write-speed-patch/54555/5
Signed-off-by: Aleksander Jan Bajkowski <A.Bajkowski@stud.elka.pw.edu.pl>
[commit subject & description tweaks]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0440-Fixed-48k-timing-issue.patch')
0 files changed, 0 insertions, 0 deletions