pgsql-performance-owner@xxxxxxxxxxxxxx wrote: > This board has Intel chipset. I cannot remember the exact type but it > was not in the low end category. > dmesg says: > > <Intel ICH7 SATA300 controller> > kernel: ad4: 152626MB <SAMSUNG HD160JJ ZM100-33> at ata2-master SATA150 > kernel: ad4: 152627MB <SAMSUNG HD160JJ ZM100-33> at ata3-master SATA150 There have been reported problems with ICH7 on FreeBSD mailing lists, though I can't find any that affect performance. > Components: 2 > Balance: round-robin > Slice: 4096 See if changing balance algorithm to "split", and slice size to 8192 or more, while keeping vfs.read_max to 16 or more helps your performance. (e.g. gmirror configure -b split -s 8192 gm0) Also, how is your file system mounted? (what does output from 'mount' say?)
