$ buildstats-diff --diff-attr walltime /data/poky-tmp/master-before/buildstats/1572902097/ /data/poky-tmp/master/buildstats/1572902097/ --only-task do_configure
Ignoring tasks less than 00:05.0 (5.0s)
Ignoring differences less than 00:02.0 (2.0s)

  PKG                  TASK          ABSDIFF  RELDIFF  WALLTIME1 -> WALLTIME2
  gettext-native       do_configure   -34.2s   -23.7%     144.3s -> 110.2s
  gettext              do_configure   -20.6s   -15.2%     136.2s -> 115.5s
  libxml2              do_configure   -13.5s   -40.1%      33.6s -> 20.1s
  libxdmcp             do_configure   -10.6s   -38.7%      27.3s -> 16.7s
  kmod                 do_configure    -9.2s   -27.0%      34.1s -> 24.9s
  python3              do_configure    -8.5s   -16.3%      51.9s -> 43.4s
  libarchive-native    do_configure    -8.1s   -13.8%      58.5s -> 50.5s
  ncurses              do_configure    -7.4s   -27.9%      26.6s -> 19.2s
  gawk                 do_configure    -7.1s   -20.4%      34.7s -> 27.6s
  bash                 do_configure    -6.8s   -19.9%      34.3s -> 27.5s
  coreutils            do_configure    -6.8s   -11.8%      57.3s -> 50.5s
  libx11               do_configure    -5.4s   -19.7%      27.4s -> 22.0s
  procps               do_configure    -5.4s   -18.8%      28.6s -> 23.2s
  m4-native            do_configure    -5.3s   -22.5%      23.7s -> 18.4s
  diffutils            do_configure    -5.3s   -12.0%      44.2s -> 38.9s
  libnsl2              do_configure    -5.3s   -21.7%      24.3s -> 19.0s
  libice               do_configure    -4.9s   -18.9%      26.0s -> 21.1s
  socat                do_configure    -4.7s   -17.5%      26.9s -> 22.2s
  grep                 do_configure    -4.7s   -10.6%      44.2s -> 39.5s
  db                   do_configure    -4.5s   -13.1%      34.3s -> 29.8s
  bison-native         do_configure    -4.3s   -10.6%      41.1s -> 36.7s
  m4                   do_configure    -4.3s   -10.2%      42.1s -> 37.8s
  libtool-native       do_configure    -4.3s   -28.5%      15.0s -> 10.7s
  libpam               do_configure    -3.9s   -13.1%      30.2s -> 26.2s
  libxcrypt            do_configure    -3.5s   -19.3%      18.0s -> 14.5s
  acl-native           do_configure    -3.2s   -23.1%      13.8s -> 10.6s
  libffi               do_configure    -3.2s   -18.0%      17.7s -> 14.5s
  libcheck             do_configure    -3.1s    -9.9%      31.7s -> 28.6s
  xkeyboard-config     do_configure    -3.1s   -29.8%      10.5s -> 7.3s
  e2fsprogs            do_configure    -3.0s   -17.4%      17.4s -> 14.3s
  libtool-cross        do_configure    -2.9s   -15.7%      18.7s -> 15.8s
  flex                 do_configure    -2.7s   -12.7%      21.1s -> 18.4s
  libxcb               do_configure    -2.7s   -12.2%      21.6s -> 19.0s
  acl                  do_configure    -2.5s   -10.4%      24.0s -> 21.5s
  ncurses-native       do_configure    -2.3s   -11.0%      20.6s -> 18.4s
  readline             do_configure    -2.0s   -13.0%      15.7s -> 13.6s
  elfutils             do_configure    -2.0s    -8.9%      22.4s -> 20.4s
  popt-native          do_configure     2.0s   +16.6%      12.2s -> 14.3s
  flex-native          do_configure     2.1s   +13.6%      15.3s -> 17.4s
  xz-native            do_configure     2.1s   +11.6%      17.9s -> 20.0s
  libcap-ng-native     do_configure     2.3s   +19.7%      11.8s -> 14.1s
  rsync-native         do_configure     2.4s   +15.7%      15.5s -> 18.0s
  attr                 do_configure     2.5s   +18.1%      13.8s -> 16.3s
  python3-native       do_configure     2.8s    +8.3%      33.4s -> 36.2s
  libpcre2-native      do_configure     2.9s   +23.0%      12.5s -> 15.3s
  lzo                  do_configure     3.1s    +7.5%      41.5s -> 44.6s
  libffi-native        do_configure     3.1s   +23.1%      13.4s -> 16.6s
  elfutils-native      do_configure     3.1s   +35.9%       8.7s -> 11.8s
  lzo-native           do_configure     4.3s   +29.8%      14.6s -> 18.9s
  util-linux           do_configure     4.8s   +16.3%      29.4s -> 34.2s
  shadow               do_configure     4.8s   +24.0%      20.2s -> 25.0s
  libsm                do_configure     6.7s   +44.0%      15.2s -> 21.9s
  db-native            do_configure     8.5s   +42.3%      20.2s -> 28.7s
  pkgconfig-native     do_configure     8.7s   +20.7%      42.0s -> 50.7s
  perl                 do_configure     9.0s   +10.9%      82.5s -> 91.5s
  gmp-native           do_configure    19.5s   +68.7%      28.4s -> 47.8s

Cumulative walltime:
  -139.6s    -5.0%    46:24.0 (2784.0s) -> 44:04.5 (2644.5s)