> On 5/19/20 10:46 PM, Jan Hubicka wrote: > > Martin, the zstd compression breaks the compression statistics (it works > > when > > GCC is configured for zlib) > > Hello. > > Can you please be please more concrete? I can help with, but I don't know > what's broken. Sure, the compression statistics are in -flto-report. Currently I get: [WPA] Compression: 99229066 input bytes, 0 uncompressed bytes (ratio: 0.000000)
It should print sane info about #of uncomporessed bytes and ration. (it prints sane output with zlib compression on my other machine where i did not install lzop). On related note, I remember us discussing that std compression has problem with bigger headers then zlib. Since we stream our header that says if section is compressed, I wonder if we could teach stream-out phase to skip compression if it is not benefical, so the size info is not duplicated? Honza > > Thanks, > Martin
