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RV-Dock C906 Write Performance
This page documents some experiment data on XuanTie C906 cache write performance.
According to the D1 user manual, the integrated C906 supports 32kB D-cache and the following write-through thresholds:
- continuously storing
4full cache lines. - continuously storing
16full cache lines. - continuously storing
64full cache lines.
Therefore, I would like to investigate the write performance under different configurations.
Environment And Benchmark
Environment
- Lichee RV-Dock board.
- Memory test region [
0x30000,0x44000).
Benchmark
- Specify
1Kregion $R$ [$A_1$, $A_2$]. - Repeat writing data continuously from $A_1$ to $A_2$ until
128MBof data is written. Then get the consumed time as a sample point. - Increase $A_2$ by
1kBand jump to step 2.
Experiment Result
Disable D-Cache
Enable D-Cache And Disable Write-Through
Enable D-Cache And Enable Write-Through With 4 Cache Line
Enable D-Cache And Enable Write-Through With 16 Cache Line
Enable D-Cache And Enable Write-Through With 64 Cache Line
All In One
