On 2017-Mar-27, at 3:25 AM, Mark Millard <markmi_at_dsl-only.net> wrote: > On 2017-Mar-27, at 2:41 AM, Dimitry Andric <dim_at_FreeBSD.org> wrote: > >> On 26 Mar 2017, at 23:36, Mark Millard <markmi_at_dsl-only.net> wrote: >>> >>> I upgraded from llvm40 r4 to final. An interesting result was >>> its creation of a backup package for llvm40-4.0.0.r4: >>> >>> about 13 cpu-core-hours running pkg create >>> >>> (Remember: I've been building with WITH_DEBUG= ) Its >>> single-threaded status stands out via elapsed time >>> approximately matching. >>> >>> I'll note that it was somewhat under 6 elapsed hours for >>> staging to have been populated (-j4 with 4 cores present >>> helps for this part). >>> >>> (Of course these elapsed-time figures are rather system >>> dependent, although the ratio might be more stable.) >>> >>> >>> >>> Also interesting was: >>> >>> Installed packages to be REMOVED: >>> llvm40-4.0.0.r4 >>> >>> Number of packages to be removed: 1 >>> >>> The operation will free 49 GiB. >> >> Yes, this is big. But there is no real need to build the llvm ports >> with debug information, unless you want to hack on llvm itself. And >> in that case, you are better served by a Subversion checkout or Git >> clone from upstream instead. >> >> -Dimitry > > FYI: > > Historically unless something extreme like this ends up > involved I build everything using WITH_DEBUG= or explicit > -g's in order to have better information on any failure. > > This is extreme enough that next time I synchronize > /usr/ports and it has a devel/llvm40 update I'll > likely rebuild devel/llvm40 without using WITH_DEBUG= . > I'm more concerned with the time it takes than with > the file system space involved. [Bad example of a incomplete thought. . .] That last presumes a hardware environment with lots of RAM (such as 16 GiBytes) --which I usually do not have access to. Having such is why the report was from a powerpc64 context: that is where I've access to that much RAM for FreeBSD. === Mark Millard markmi at dsl-only.netReceived on Mon Mar 27 2017 - 08:43:05 UTC
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