Messages in this thread | | | From | tigran@aivazian ... | Subject | Re: [PATCH] [2.4.XX] Silicon Image/CMD Medley Software RAID | Date | Tue, 7 Oct 2003 16:02:51 +0200 (CEST) |
| |
Hi Thomas,
While we are on the subject of Silicon Image hardware, I wanted to ask --- is this normal that this hardware (boxed as "EIO AP-1680 IDE RAID card"), see this URL for more info):
http://www.ivmm.com/eio/products_ap1680.html
so horrendously slow, without even using any of its RAID functions (which would be slow understandably as they are software RAID)?
Numbers. My IDE drives perform 22-25M/sec (hdparm -t) when connected to the onboard IDE controller (6BXD SMP motherboard, old, 2xPIII550, 1G RAM) but when connected to this RAID card and used as plain physical disks (no RAID sets configured) they give 2M/sec using DMA and 4M/sec when I disable DMA.
I see many people mentioning Silicon Image hardware here, so I assumed it is a useable hardware, but if everyone is getting 2M/sec (or 4M/sec and hog the whole system performance with PIO!) then am I the first one who noticed that the king is, in fact, naked? Shouldn't I expect a decent 20-25M/sec hdparm -t from the drives connected to the additional IDE card (be it RAID or no RAID, just extra IDE slots)?
Kind regards Tigran
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |