Date: Sun, 16 Apr 2017 01:11:20 +1000 (EST) From: Bruce Evans <brde@optusnet.com.au> To: John Baldwin <jhb@freebsd.org> Cc: "Ngie Cooper (yaneurabeya)" <yaneurabeya@gmail.com>, src-committers <src-committers@freebsd.org>, rgrimes@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r316938 - head/sbin/savecore Message-ID: <20170416003716.I2908@besplex.bde.org> In-Reply-To: <1774031.vuxxQt1GW8@ralph.baldwin.cx> References: <201704150149.v3F1nu0D009274@pdx.rh.CN85.dnsmgr.net> <4CBF25DF-F407-4F50-8724-B73F64734E19@gmail.com> <1774031.vuxxQt1GW8@ralph.baldwin.cx>
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On Sat, 15 Apr 2017, John Baldwin wrote: > On Friday, April 14, 2017 07:40:57 PM Ngie Cooper wrote: >> >>> On Apr 14, 2017, at 18:49, Rodney W. Grimes <freebsd@pdx.rh.CN85.dnsmgr.net> wrote: >>> Do we use KiB, MiB, GiB,... any place else in the system? I cant think of >>> a place we do this, so please, lets not start doing this here? > > The du manpage does at least. > >> humanize_number(3) from libutil uses IEC units. > > Note that it is optional though. You can use flags to decide what you want > and the default is to not use IEC. ls -h uses humanize_number but not with > IEC units. In particular, there are flags to control the scaling and > prefixes used: HN_DIVISOR_1000 and HN_IEC_PREFIXES. The default is to use > power-of-2 scaling with non-IEC prefixes (so KB == 1024 by default). > Currently nothing in base uses HN_IEC_PREFIXES. > > (I see you already reverted the printf, just wanted to point out that the > humanize_number behavior is configurable.) There is already the environment variable BLOCKSIZE to turn off bogus units in a for places. I think most uses set this to 1 real K and barely remember how bad the defaults are without it until they somehow run a shell without it set (perhaps in single-user mode). Its designers didn't forsee IEC mistakes, else it would with be more than a single number, and have meta-info to turn off bogus unit names. ls(1) and df(1) don't properly document that -h (or whatever IEC mistakes might be in it) have precedence over BLOCKSIZE. du(1) does document this properly. Bruce
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