Memory performance on Serverworks GC-LE based system poor?
Hi,
I have experienced extreme low STREAMS numbers (about 600 MB/sec for Triad)
on two dual CPU systems based on the ServerWorks GC-LE chipset (SuperMicro P4DLR+ mainboard). Both systems had 2x2.4 GHz XEONs, 4GB of DDR memory and were running kernel 2.4.18. I would usually expect STREAMS numbers of about 2000 MB/sec for this kind of systems.
Does this ring any bells?
Martin
Signature · 4 lines
---------------------------------- Martin Knoblauch [email protected] http://www.knobisoft.de
Quoted 7 lines · Martin Knoblauch
I have experienced extreme low STREAMS numbers (about 600 MB/sec for Triad)
on two dual CPU systems based on the ServerWorks GC-LE chipset (SuperMicro P4DLR+ mainboard). Both systems had 2x2.4 GHz XEONs, 4GB of DDR memory and were running kernel 2.4.18. I would usually expect STREAMS numbers of about 2000 MB/sec for this kind of systems.Does this ring any bells?
ISTR serverworks LE errata with MTRRs and write-combining. Whether this is biting you or not I can't say.
Dave
Signature · 2 lines
| Dave Jones. http://www.codemonkey.org.uk | SuSE Labs
Quoted 8 lines · Dave Jones
Quoted 6 lines · Martin Knoblauch
I have experienced extreme low STREAMS numbers (about 600 MB/sec for Triad)
on two dual CPU systems based on the ServerWorks GC-LE chipset (SuperMicro P4DLR+ mainboard). Both systems had 2x2.4 GHz XEONs, 4GB of DDR memory and were running kernel 2.4.18. I would usually expect STREAMS numbers of about 2000 MB/sec for this kind of systems.
Quoted 4 lines
Quoted 1 line
Does this ring any bells?
ISTR serverworks LE errata with MTRRs and write-combining. Whether this is biting you or not I can't say.
Write combining would really only bite graphics cards. The only other performance errata I know about affects the CIOB20 earlier revisions (vendor serverworks id 0x0006)
I get 1600 on a similar machine but with a Intel SHG2 motherboard (ServerWorks GC LE Chipset as well) (Same RAM + Processors) Maybe not a very good Motherboard you have?
Thanks
Craig
Quoted 2 lines
Quoted 2 lines
Quoted 2 lines
I have experienced extreme low STREAMS numbers (about 600 MB/sec for
Triad)
Quoted 1 line
Quoted 1 line
Quoted 1 line
on two dual CPU systems based on the ServerWorks GC-LE chipset
(SuperMicro
Quoted 1 line
Quoted 1 line
Quoted 1 line
P4DLR+ mainboard). Both systems had 2x2.4 GHz XEONs, 4GB of DDR
memory and
Quoted 1 line
Quoted 1 line
Quoted 1 line
were running kernel 2.4.18. I would usually expect STREAMS numbers of
about
Quoted 10 lines
Quoted 6 lines
Quoted 3 lines
2000 MB/sec for this kind of systems.
Does this ring any bells?
ISTR serverworks LE errata with MTRRs and write-combining. Whether this is biting you or not I can't say.
Write combining would really only bite graphics cards. The only other performance errata I know about affects the CIOB20 earlier revisions (vendor serverworks id
0x0006)