From mboxrd@z Thu Jan 1 00:00:00 1970 From: bakul@bitblocks.com (Bakul Shah) Date: Sat, 30 Sep 2017 14:56:29 -0700 Subject: [TUHS] UNIX of choice these days? In-Reply-To: References: <1506784652.28254.for-standards-violators@oclsc.org> Message-ID: <7E337D3A-984E-444B-BE8F-7AFCBE7F50DF@bitblocks.com> On Sep 30, 2017, at 1:29 PM, Kevin Bowling wrote: > I seem to recall proc is loosely deprecated in Linux anyway in favor > of sysfs. GregKH mentioned people misuse both, for instance making > them output pretty histograms instead of simple text values, that > defeat the fundamental design tenants of these interfaces -- which is > to try and maintain a stable API. > One thing I think Linux did pretty well is the whole object > orientation in C thing with kobject, and that nets you automatic sysfs > directories and nodes for pretty much everything. The Linux /sys fs is truly bizarre. On a RaspberryPi running Linux 4.4.21+: $ find /sys | wc # total entries 11448 $ find /sys -type l | wc # count of symlinks 1077 $ find /sys -type f | wc # count of "regular" files 8931 I am not sure exposing most everything via a namespace in this manner is such a good idea (or at least in "good taste" :-) Interfaces should be lean. Similarly the /proc fs is quite strange. Why does it have any non process subdirectory? $ echo /proc/[0-9]* | wc -w # count of processes 142 $ echo /proc/[^0-9]* | wc -w # count of non-process directories 58 Compare: Linux (raspberryPi + X windows): $ echo /proc/[0-9]* |wc -w # how many processes 142 $ find /proc/[0-9]* | wc -l # how many proc related files+dirs 66153 FreeBSD (10.3 amd64+zfs+4 lightweight jails): $ echo /proc/[0-9]* | wc -w # how many processes 123 $ find /proc/[0-9]* | wc -l # how many proc related files+dirs 1075 Plan9 (mostly quiescent): $ echo /proc/[0-9]* | wc -w 64 $ du -a /proc/[0-9]* | wc -l 1235 Anyone feeling sad about /proc in FreeBSD should consider the alternative! -------------- next part -------------- An HTML attachment was scrubbed... URL: