Hello! I think the major performance options for virtuoso are NumberOfBuffers, MaxDirtyBuffers, MaxCheckpointRemap. Is that correct? I think loading time is too long in my tests:
load dbpedia articles_label_fr.nt (~ 253200 triples) started 30 min ago and is not finished. My machine is a intel core dual 2Ghz with 4GB RAM and one SATA disk under linux. the hard disk is very very busy while the import. can this be tuned? I tryed the default values in virtuoso.ini and Database] ... MaxCheckpointRemap = 400000 ... [TempDatabase] ... MaxCheckpointRemap = 20000 ... ; ; Server parameters ; [Parameters] ... NumberOfBuffers = 180000 MaxDirtyBuffers = 120000 AutoCheckpointLogSize = 10000000 ... I also tryed NumberOfBuffers = 100000 at the beginning top reports much free memory for a long time , after ~ 45 min it is: Mem: 3984900k total, 3957004k used, 27896k free, 11416k buffers Swap: 6385796k total, 268k used, 6385528k free, 2111984k cached 5362 peterw 18 0 1944m 1.6g 9520 S 1 41.7 2:07.61 virtuoso-t Can you give me hints what i can change to improve performance? Thank you! Peter
