Re: Benchmarking ROOT 2.21/07 + PGCC (2)

Jacek M. Holeczek (holeczek@us.edu.pl)
Fri, 12 Mar 1999 12:37:13 +0100 (MET)

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> Could you tell me also which I/O system your PII 450 has (SCSI, ultra-wide
> SCSI, UATA, disk rpms, etc). I've a dual PII 450 with UATA 7200rpm disk at
The "data" disk is a local HD 10GB UDMA ( I have forgotten the manufacturer ).
ROOT executables/libraries are on a NFS mounted disk ( via 10Mb ethernet ).
> home so I will make the comparison this evening.
Fine.
I' interested not only in the I/O performance, but ( mainly ) in Real/Cpu
Times of "stress" ( and of ".x benchmarks.C" ).
I mean, for example, is the 2:1 ratio between interpreted and compiled
"stress" very good, good, ok, bad, or very bad ?
If it's worse then yours I'd like to try different optimization flags.
( BTW. maybe the one who reported a significant performance increase when
using "loop unrolling" did it on the rootdev list, not roottalk ? But I
can't find the archive of rootdev to search it. Any ideas ? )
Jacek.

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