Could it somehow not be compiling 64-bit support?
--
Brent Jones
I thought about that but it says when it boots up that it is 64-bit, and I'm
able to run
64-bit binaries. I wonder if it's compiling for the wrong processor
optomization though?
Maybe if it is missing some of the newer SSEx instructions the zpool checksum
checking is
slowed down significantly? I don't know how to check for this though and it
seems strange
it would slow it down this significantly. I'd expect even a non-SSE enabled binary to
be able to calculate a few hundred MB of checksums per second for a 2.5+ghz processor.
Chad
Would it be possible to do a closer comparison between Rich Lowe's fast
142 build and your slow 142 build? For example run a diff on the
source, build options, and build scripts. If the build settings are
close enough, a comparison of the generated binaries might be a faster
way to narrow things down (if the optimizations are different then a
resultant binary comparison probably won't be useful).
You said previously that:
The procedure I followed was basically what is outlined here:
http://insanum.com/blog/2010/06/08/how-to-build-opensolaris
using the SunStudio 12 compilers for ON and 12u1 for lint.
Are these the same compiler versions Rich Lowe used? Maybe there is a
compiler optimization bug. Rich Lowe's build readme doesn't tell us
which compiler he used.
http://genunix.org/dist/richlowe/README.txt
I suppose the easiest way for me to confirm if there is a regression or if my
compiling is flawed is to just try compiling snv_142 using the same procedure
and see if it works as well as Rich Lowe's copy or if it's slow like my other
compilations.
Chad
Another older compilation guide:
http://hub.opensolaris.org/bin/view/Community+Group+tools/building_opensolaris
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
