Pierre Ossman wrote: > On Tue, 14 Oct 2008 08:25:22 +0900 > Tejun Heo <tj@xxxxxxxxxx> wrote: > >> Pierre Ossman wrote: >>> When I'm accessing a single disk, the bandwidth is 70 - 80 MiB/s. When >>> I access a second disk, the bandwidth is about 50 MiB/s/disk, and all >>> five results in 25 MiB/s/disk. In other words, something is limiting >>> things to about 100 MiB/s. Now the question is what that limiting >>> factor is. >>> >> That's the limit of sil3124/3132. Dunno why but you can't go over that. > > Bummer. Is this per port, or is it the PCIe side of the chip that is > limited to this speed? I think it's on the host bus side. > What do the silicon image guys have to say about it? ISTR they confirmed the problem but I don't remember talking too much about it. >> There's 3132-2 chip on the market. Maybe it's worth a try? > > Now that model number was not something that was easily found on > google, nor on silicon image's website. Know of any boards with that > chip? Somebody wrote me an email about it. Looking up... eh.. can't find. Sorry. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
