Run 2 is with the fixes fedora are using for retpoline, to guard
against Spectre v2. These are not the latest fixes, but they do
apply to 4.14. NB they might blow up on AMD machines or in KVMs,
that has now been fixed upstream.
run -> 2.0 2.1 2.2 mean
tools
-----
binutils pass 1 80.131 79.826 80.158
gcc pass 1 187.231 188.910 189.883
headers 4.407 4.439 4.456
glibc 117.391 119.706 119.789
libstdcpp 23.760 23.875 23.878
binutils pass 2 29.275 29.368 29.244
gcc pass 2 293.224 293.550 287.530
tcl 49.594 51.363 48.672
expect 4.347 4.635 4.318
dejagnu 1.135 1.134 1.131
check 5.285 5.701 5.328
ncurses 18.203 19.036 18.055
bash 18.663 19.237 19.031
bison 18.548 19.211 18.988
bzip2 0.969 0.984 0.977
coreutils 38.240 39.239 39.282
diffutils 17.507 18.051 17.765
file 4.542 4.656 4.612
findutils 25.195 26.060 26.159
gawk 10.436 10.743 10.640
gettext 38.984 40.130 40.119
grep 13.966 14.453 14.055
gzip 8.711 9.047 8.815
m4 13.576 13.852 13.786
make 4.353 4.432 4.504
patch 14.899 15.391 15.638
perl 49.377 50.351 51.552
sed 12.698 12.966 13.429
tar 23.995 24.462 25.118
texinfo 18.730 19.237 19.727
util-linux 24.114 24.711 25.568
xz 8.040 8.235 8.438
tools.sh 20m58s 21m16s 21m10s
1258s 1276s 1270s 1268s
variation +0.6% -0.8%, 3.3% slower than initial, 0.9% than PTI
intochroot
----------
On the way into chroot (or if I was re-entering after a build had
failed), I check symlinks /etc/passwd and /etc/group, check that
everything is mounted - or mount it, and then create /etc/passwd
and /etc/group. That script never ends until after I have exited
from chroot
passwd 0.003 0.002 0.002
group 0.003 0.002 0.002
chroot
------
Again, some variation from the book - particularly, I split up
glibc and sanity checks, and I do not invoke the new bash.
directories 0.009 0.009 0.008
essential symls 0.007 0.008 0.007
inputrc 0.001 0.001 0.002
other-files 0.003 0.003 0.003
headers 3.332 3.332 3.538
man-pages 0.057 0.055 0.055
glibc 860.935 856.271 853.981
nsswitch 0.001 0.002 0.002
tzdata 0.099 0.099 0.099
localtime 0.002 0.002 0.002
ld.so.conf 0.002 0.002 0.002
adj-linker 0.005 0.005 0.004
adj-specfile 0.006 0.005 0.006
sanity-check-1 0.032 0.032 0.032
zlib 1.212 1.191 1.200
file 4.948 4.902 4.898
readline 4.102 4.148 4.139
m4 22.229 22.212 22.165
bc 9.138 9.049 8.996
binutils 159.076 151.402 156.014 155.497
variation +2.3%, -2.6%, 6.5% slower than initial, 1.4% than PTI
gmp 52.393 51,891 52.086
mpfr 22.763 22.348 22.641
mpc 14.089 13.972 13.980
gcc 2046.371 2031.831 2036.875 2038.359
variation +0.39%, -0.32%, 2,6% slower than initial, 0.6% than PTI
sanity-check-2 0.038 0.068 0.039
bzip2 2.037 2.100 2.067
pkg-config 16.822 17.363 16.928
ncurses 17.504 18.114 17.059
attr 2.608 2.728 2.633
acl 2.705 2.801 2.738
libcap 0.387 0.427 0.422
sed 20.202 21.161 20.339
shadow 8.963 9.176 9.028
psmisc 3.403 3.470 3.442
iana-etc 0.094 0.095 0.093
bison 20.083 20.367 20.477
flex 12.670 12.864 12.748
bison tests 0.687 0.704 0.686
grep 21.444 21.862 21.464
bash 175.626 175.969 175.715
libtool 95.332 94.790 97.368
gdbm 5.632 5.620 5.957
gperf 2.639 2.645 2.782
expat 7.096 7.164 7.422
inetutils 29.202 29.294 31.291
perl 712.479 713.343 721.877
XML-Parser 1.967 2.069 2.013
intltool 2.270 2.320 2.317
autoconf 72.336 73.230 69.839
automake 876.517 869.949 865.111
xz 12.210 12.020 12.156
kmod 4.616 4.613 4.665
gettext 126.668 119.616 120.840
libffi 38.729 36.302 36.194
Python3 51.012 47.603 46.891
ninja 21.906 19.828 19.363
meson 1.144 0.953 0.910
procps 9.676 9.441 9.062
e2fsprogs 83.169 84.070 88.242
coreutils 113.881 123.094 112.624
acl tests 0.761 0.794 0.772
diffutils 25.107 25.760 24.941
gawk 15.093 15.554 15.045
findutils 45.677 47.358 46.071
groff 41.803 42.183 41.987
grub2 39.037 39.413 39.704
less 3.101 3.108 3.144
gzip 10.508 10.483 10.626
iproute2 5.191 5.252 5.302
kbd 7.358 7.282 7.432
libpipeline 12.313 12.361 12.646
make 57.414 57.490 57.619
patch 17.566 17.368 17.876
sysklogd 0.492 0.496 0.553
sysvinit 0.475 0.485 0.539
eudev 13.936 14.061 13.753
util-linux 50.567 50.907 51.150
man-db 28.336 28.661 28.095
tar 286.694 280.725 280.182
texinfo 46.669 44.528 44.185
vim 9.655 9.342 9.100
elfutils 18.922 18.385 18.244
debug-symbols 0.208 0.198 0.195
(part of stripping again)
chroot.sh 1:51:17 1:50:37 1:50:22
6677s 6637s 6622s 6645s
variation +0.5%, -0.3%, 3.4% slower than initial, 0.9% than PTI
linux-4.14.13 - this time, patched
zcat /proc/config 0.002 0.002 0.002
make oldconfig 1.723 1.727 1.696
make -j8 4m44.152 4m43.483 4m53.281
modules_inst' 0.784 0.779 0.788
kernel total 4m48 4m46 4m56
round to sec 288s 286s 296s 290s
variation +2.0%, -1.4%,
0.3% faster than initial, 2.0% faster than PTI
--
Truth, in front of her huge walk-in wardrobe, selected black leather
boots with stiletto heels for such a barefaced truth.
- Unseen Academicals
--
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