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Message Posted: Fri, 04 Mar 2005 @ 22:25:59 GMT
| Subj: || || Re: FastExport performance vs. Fastload |
| From: || || Bob Hahn |
In my tests FastExport is sometimes very sensitive to the number of sessions--how many are you using? Often 8 or even 4 works best. I've seen
significant throughput declines from too many sessions. I've seen 60 MB/second for both w/500 byte rows on 8 node 5380--that's standalone.
What are the throughputs you're seeing by phase (fdl acquisition v apply, fxp select v return)? How many bytes loaded/exported? Row size?
Client cpu (reported in the FXP/FDL stdout)?. Was there contention from other workload on Teradata or the client as a factor? Also client
os/cpu, Teradata os/cpu and system size.