On 12/15/19 7:06 PM, Ken Moffat via lfs-dev wrote:
On Sun, Dec 15, 2019 at 12:30:52PM -0600, Bruce Dubbs via lfs-dev wrote:
https://www.phoronix.com/scan.php?page=article&item=10980xe-intel-linux
I find the benchmarks interesting. On page 5 is the time for kernel
comparison. On my Haswell I get for linux-5.4.2:
$ time make defconfig
real 0m2.883s
$ time make
real 15m28.691s
And after 'make mrproper; make defconfig'
$ time make -j12
real 2m24.326s
Clearly it's time for me to consider upgrading my development system, but
I'm waiting to see what Intel's 10nm processors can do and what they will
cost. My current SBU time is 101s and some of the larger packages like
libreoffice, thunderbird, qt, qtwebengine. etc are a bit tedious.
I don't ever make defconfig (apart from my laptop, my configs are
adequately smaller although some unwanted things invariably get
pulled in). But I see that on my i7 haswell (DDR3 1600!) the SBU is
around 101s - latest binutils adds a second or two - and on my
Picasso (DDR4 3000 but with binutils-2.32) the latest build was also
101s.
For kernel compiles, make -j{N+1} is the old recommendation, or from
people like Greg K-H make -j{Nx2}. Unlike C++ and rust the kernel
doesn't use a lot of RAM when compiling.
But I don't see that I'll buy intel again in the foreseeable future.
On the other hand on page 6, Systemd Total Boot Time
The best time was about 25 seconds. On my Haswell, my LFS System V boot
time is 8 seconds.
-- Bruce
My haswell often spends several seconds in boot with things like
unbound (for me, that is used on all systems, not as a server
package). But I haven't timed a boot recently. For systemd
desktops, the time will include both X (or Wayland) and the
display manager.
For SysV the boot times are in /var/log/boot.log.
-- Bruce
--
http://lists.linuxfromscratch.org/listinfo/lfs-dev
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
