Hi all, I've started to display the effects of changing the Linux block device readahead buffer to the sequential read performance using fio. There are lots of raw data buried in the page, but this is what I've distilled thus far. Please have a look and let me know what you think: http://wiki.postgresql.org/wiki/HP_ProLiant_DL380_G5_Tuning_Guide#Readahead_Buffer_Size Regards, Mark
