On Thu, 14 Aug 2014, Jan Hubicka wrote:
> >
> > And this fixes the thinko in zlib use.
> >
> > du /tmp/*ltrans* | awk '{ sum += $1 } END { print sum }'
> > stage3 cc1 WPA ltrans file size 178740 (patched)
> > stage3 cc1 WPA ltrans file size 460068 (unpatched)
>
> The patch works now with Firefox. For libxul linktime I get
>
> Unpatched:
> real 5m59.514s
> user 47m55.468s
> sys 4m36.717s
>
> WPA is 125s, stream in 30s, stream out 5.98s.
> Note that usually WPA is around 80-90s, it is now up because of
> devirtualization having too many contextes (it takes 40s). Will fix that next
> week.
>
> patched:
> real 6m12.437s
> user 51m18.829s
> sys 4m30.809s
>
> WPA is 129s, stream in 29.23s, stream out 12.16s.
>
> Patched + fast compression
> real 6m4.383s
> user 49m15.123s
> sys 4m31.166s
>
> WPA is 124s, stream in 29.39, stream out 7.33s.
>
> So I guess the difference is close to noise factor now. I am sure there
> are better compression backends than zlib for this purpose but it seems
> to work well enough.
Yeah, we might want to pursue that lz4 thing at some point.
I'll take the above as an ok to go forward with this change
(moving compression to the "stream" level from section level).
Richard.
