Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> writes: >> We have written a new block driver for our AHCI based PCIe SSDs. The >> main objective of our product is providing high performance. Traffic >> through OS storage stack is not to able fully utilize the device's >> capabilty. To improve the traffic to the device and hence >> showcase/utilize the device's capability, we have come up with this new >> block driver. This driver includes >> * utilize device's increased queue depth >> * workaround for hardware errata >> >> We want to get this driver into kernel tree to support the device out of >> the box. Attached this driver as a patch for latest kernel. We would >> like to get your comments, and also open for discussion. > > The kernel starting point would be that we have an AHCI driver. If you > need workarounds for hardware errata then they can go into it and that is > fine. We support NCQ so we can use the queue depths. If there are > extensions then the AHCI driver can be enhanced. Given the highly parallel nature of these parts, I wouldn't be surprised if the ahci queue depth of 31 is one of the main bottlenecks. Can you think of a way to extend the ahci driver in this manner to accommodate devices like this one? Cheers, Jeff -- 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
