zstd ZSTD_insertBt1 usage too much cpu about 52%

[peterpaule]

we use rocksdb as storage engine and use zstd as compression type; but we found zstd use too much cpu , someone who can help us? thank you;

zstd version:v1.4.0

[Cyan4973]

• RocksDB has many performance parameters that can be tweaked. Most notably, one can select where to apply compression, which compression level to use (which would directly impact ZSTD_insertBt1(), swapping it for something faster), and even switch zstd for lz4 for more speed. Refer to RocksDB documentation to know and understand them.
• 1.4.0 is 6+ years old. If that's an option, try to update the library to something more recent, like v1.5.7.

[peterpaule]

thanks, i will try v1.5.7