Guennadi Liakhovetski wrote: > On Thu, 28 Sep 2006, Kai Makisara wrote: > >> The limits come from the block subsystem that all scsi devices use >> nowadays. It is a rather long story but can be found from linux-scsi >> archives, e.g., >> http://marc.theaimsgroup.com/?l=linux-scsi&m=114147170831847&w=2 > > Yes, already found the 2 later threads - one on lkml and one on scsi. I > did look at them briefly back then, but, probably, too briefly. > > One of the settings - enable_clustering If you are just trying to get to 1MB, then instead of enabling clustering we could also increase the defaul SCSI_MAX_PHYS_SEGMENTS. It is 128 now, but there is a compile option to set it it up to 256. Well, actually I think that gets a little short because SG_ALL is only 255. Why is SG_ALL 255, but you can set SCSI_MAX_PHYS_SEGMENTS to 256? - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
