On Thu, 2019-05-30 at 12:20 -0400, Adam Jackson wrote:
> - What's the mean and/or median size of an rpm in Fedora, and what
> difference in {de,}compression time would that likely experience?
Just to follow up on this since it was quick to math out. For Fedora
30's x86_64 repo, various "averages" and some nearby binary rpms to
each:
Arithmetic mean: 1347495
-rw-r--r--. 1 ajax ajax 13532128 Feb 9 16:52 texlive-pgfplots-doc-svn47373-25.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 13522512 Feb 17 19:28 Singular-doc-4.1.1p3-4.fc30.x86_64.rpm
-rw-r--r--. 1 ajax ajax 13452180 Feb 7 11:45 asterisk-sounds-core-es-g722-1.6.1-5.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 13411540 Mar 14 10:27 eclipse-dtp-1.14.102-4.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 13358352 Mar 13 05:50 gcc-go-9.0.1-0.10.fc30.x86_64.rpm
Geometric mean: 104613
-rw-r--r--. 1 ajax ajax 104624 Feb 9 16:55 texlive-datetime2-polish-doc-svn36692.1.0-25.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 104624 Feb 3 21:55 usbutils-010-3.fc30.x86_64.rpm
-rw-r--r--. 1 ajax ajax 104612 Aug 17 2018 samtools-libs-0.1.19-16.fc29.x86_64.rpm
-rw-r--r--. 1 ajax ajax 104600 Feb 5 11:43 kf5-khtml-devel-5.55.0-1.fc30.x86_64.rpm
-rw-r--r--. 1 ajax ajax 104588 Feb 2 00:49 objenesis-2.6-4.fc30.noarch.rpm
Median: 71064
-rw-r--r--. 1 ajax ajax 71068 Feb 7 01:26 dagger-1.2.2-10.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 71068 Feb 24 17:02 gnome-shell-extension-system-monitor-applet-36-4.20190224git2583911.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 71064 Feb 15 10:55 cbi-plugins-javadoc-1.1.5-5.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 71064 Mar 11 08:03 opensips-acc-2.4.5-1.fc30.x86_64.rpm
-rw-r--r--. 1 ajax ajax 71060 Feb 2 05:40 libgrss-devel-0.7.0-8.fc30.x86_64.rpm
-rw-r--r--. 1 ajax ajax 71040 Feb 2 23:15 mbuffer-20181119-2.fc30.x86_64.rpm
So I kind of take it back. Even single-threaded and at zstd level 19
you'll get about 1MB/s of output (according to your sample table in the
change proposal), and something like 90% of packages are below 1MB
compressed, so I'm hard pressed to care about <1s of difference in
compression time for the vast majority of packages.
Possibly more interesting are the 21 biggest packages (an almost
arbitrary number, the 22nd biggest is the first one that's not noarch):
-rw-r--r--. 1 ajax ajax 1690320420 Feb 1 08:13 FlightGear-data-2018.3.2-1.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 1378818072 Feb 16 12:29 speed-dreams-robots-base-2.2.2-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 918112496 Mar 20 11:06 xonotic-data-0.8.2-6.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 913953504 Feb 7 11:46 astrometry-data-4204-0.76-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 876513824 Feb 16 12:29 redeclipse-data-1.5.6-9.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 795939928 Feb 6 15:24 alienarena-data-7.71.0-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 763842068 Feb 4 15:33 0ad-data-0.0.23b-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 520122860 Aug 23 2018 supertuxkart-data-0.9.3-2.fc30.5.noarch.rpm
-rw-r--r--. 1 ajax ajax 518557008 Mar 13 15:44 kicad-packages3d-5.1.0-1.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 496263868 Feb 3 22:27 vdrift-data-20141020-16.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 464651048 Feb 7 11:46 astrometry-data-4205-0.76-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 447486852 Feb 3 17:35 warsow-data-2.1.2-3.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 426017596 Feb 26 22:33 wesnoth-data-1.14.6-1.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 413617108 Feb 3 17:15 vegastrike-data-0.5.1-18.r1.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 400129316 Feb 2 01:53 openarena-0.8.8-14.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 398661608 Feb 6 21:49 berusky2-data-0.9-10.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 398113064 Jan 31 08:12 btbuilder-data-0.5.16-4.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 382267140 Mar 9 14:26 pioneer-data-20190203-2.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 367174128 Feb 1 21:20 julius-japanese-models-4.4.2.1-5.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 357514216 Feb 9 16:48 texlive-kerkis-svn15878.0-25.fc30.noarch.rpm
-rw-r--r--. 1 ajax ajax 353033380 Aug 17 2018 torcs-data-1.3.7-4.fc28.noarch.rpm
Or, the biggest desktop apps, since they're likely to see frequent
rebuilds, which are basically: eclipse, libreoffice, and firefox.
- ajax
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