Re: [perf-discuss] Re: maxphys and sd_max_xfer_size

2006-03-24 Thread Jignesh K. Shah
Of course this is "generally" true, but if you use SVM on SPARC (combinations of soft partitions/UFS on top of it) or are on x64 (in which case you use sd and not ssd) you better want to set maxphys to 1MB and not "assume" maxphys is set to 1MB.. I have been hurt by that few times now. -Jign

Re: [perf-discuss] Re: maxphys and sd_max_xfer_size

2006-03-23 Thread Steven Sim
Richard; I do believe I mention in my original email that the default sd and ssd xfer is 1 Mbyte. The problem, as I said, lies in the fact that maxphys is default 128 Mbyte which does not make sense especially since the sd/ssd driver max_xfer_size is 1 Mbyte. (that includes ufs also!) In a