very slow icedtea6 builds

Kelly O'Hair Kelly.Ohair at Sun.COM
Tue Jul 1 16:43:19 PDT 2008

Could it be using a different jar utility than before?

And you might look at the log file and see what -Xmx setting is being
passed into the jar utility (at end of jar command I think).
If the -Xmx is too low or left as the default that could be a problem.


Matthias Klose wrote:
> Kelly O'Hair schrieb:
>> The construction of the rt.jar (or maybe rt-orig.jar in the Makefiles)
>> can be very slow, lots of disk activity in creating it.
>> The hotspot build will likely be the CPU intensive one (parallel make,
>> high opt),
>> but the rest of the jdk (images in particular) is much more disk intensive.
>> The faster the disk drive and the faster the local disk, the better.
>> The number of bytes just moving from one place on the disk to another
>> is pretty intense.
> the build is done on a striped two disk array (WD Raptor 10k disks), so I don't
> think the build is limited by IO (plus I didn't change the config during the
> last six months).  Somebody had the suspicion that the build doesn't use the
> jit, but I didn't find out yet if this is true.
>   Matthias

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