Optimize zstd compression
reuse the same context for zstd compression. One context should be used
per compression thread for optimal performance. Discussion and
reccomendations can be found at go/android-hw-compression-vendor
Results (level 3 compression)
full ota on raven with optimizations: 1191.304 seconds
without optimizations: 1461.854 seconds
compression ratio remains unchanged and merge time difference are
negligible ~1% delta (probably just noise)
Test: ota_from_target_files, update_device.py
Change-Id: I3feede9f1f119874e369c54b29c594475fbf7376
1 file changed
