> Hi > > The recent PostgreSQL commit changes the default TOAST compression to lz4 when > LZ4 support is available, based on the rationale that LZ4 is generally more > efficient than pglz in terms of CPU usage and compression ratio.Given > that, should we also consider changing the default compression method used > by wal_compression = on from pglz to lz4? > Currently, wal_compression = on still maps to pglz, while lz4 has to be > selected explicitly with: > > wal_compression = lz4 > > If LZ4 is now considered stable and preferable enough to become the > default for TOAST compression, it may be worth aligning WAL compression > behavior as well, or at least discussing whether on should continue to > imply pglz. >
Thanks
