We have noticed some performance issues with the nvidia sata controller under LinuxBIOS. With FB it is faster. Using "hdparm -Tt /dev/sda" we measure 30 MB/s with LB and 45 MB/s with FB on a particular node.
lspci reports 0000:01:08.0 IDE interface: nVidia Corporation: Unknown device 0055 (rev a3) (prog-if 85 [Master SecO PriO]) with LB and 0000:00:08.0 IDE interface: nVidia Corporation: Unknown device 0055 (rev f3) (prog-if 85 [Master SecO PriO]) with FB. Also "hdparm -I /dev/sda" reports R/W multiple sector transfer: Max = 16 Current = 16 with FB and R/W multiple sector transfer: Max = 16 Current = 0 with LB. Any ideas about how to improve the SATA performance under LB? Thanks, Greg -- linuxbios mailing list [email protected] http://www.openbios.org/mailman/listinfo/linuxbios
