Do you have an anti-virus software running? That's about what I see when Sophos is switched on.
On 9 Sep 2003, michaell taylor wrote: > > Hi, > > I am trying to figure out why a new machine is running my R script so > slowly. > > The script was developed on a Linux , dual 2.8 xeon processor machine > with 4GB ram. On this machine, the script runs in about an hour (it > creates lots of multilevel simulations). While running, 100% of a single > processor (50% of dual processor) is used consistently during the entire > run, about 800 MB of ram is utilized. Xeon hyperthread condition > (on/off) seems not to matter to performance. While the script runs, I > am using the "other" processor for miscellaneous emailing, editing, etc. > > Moving the script to a windows XP machine with nearly identical hardware > configuration (2.8 dual xeon, 4.5 GB ram) the script takes nearly 2 > hours. Oddly, the maximum cpu load on this machine is 50% of a single > processor (25% of dual processor) during the run - which seems > consistent with the doubling of total processing time. While running > this script, this machine does no other tasks whatsoever. The last is very, very unlikely. > Both machines have at least double the memory required for the task, > both utilize fast scsi drives and all data is stored locally on the > drive (no data on network drives). Moreover, being a simulated problem, > very little data is read/written to drives during the process. > > Anyone have ideas as to why the Windows machine is so slow? > > Thanks in advance. > > Michaell Taylor > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
