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HW: 2048GB 2CPU, HDD 16Gb gentoo ~ # rm /usr/src gentoo ~ # time emerge --oneshot gcc real 83m7.695s user 127m57.571s sys 13m31.611s gentoo ~ # time emerge --oneshot binutils virtual/libc real 8m0.371s user 10m8.256s sys 1m33.139s gentoo ~ # time emerge --emptytree --verbose @world real 39m26.852s user 41m13.918s sys 12m43.084s