There is 64MB on the 6i and 192MB on the 642 controller. I wish the controllers had a "wrieback" enable option like the LSI MegaRAID adapters have. I have tried splitting the cache accelerator 25/75 75/25 0/100 100/0 but the results really did not improve.
>> The database data is on the drive array(RAID10) and the pg_xlog is on >> the internal RAID1 on the 6i controller. The results have been poor.
I have heard that the 6i was actually decent but to avoid the 5i.
Joshua D. Drake
>> >> My guess is the controllers are garbage. > > Can you run bonnie++ version 1.03a on the machine and report the results > here? > > It could be OK if you have the latest Linux driver for cciss, someone has > reported good results to this list with the latest, bleeding edge version of > Linux (2.6.17). > > - Luke > > > > ---------------------------(end of broadcast)--------------------------- > TIP 9: In versions below 8.0, the planner will ignore your desire to > choose an index scan if your joining column's datatypes do not > match >
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