On Mon, Nov 28, 2016 at 10:58:24AM +0200, Avi Kivity wrote: > What I guess is happening is that since the NVMe queue depth is so high, and > request the driver receives is sent immediately to the disk and there is > nothing to merge it to. That could indicate the absence of plugging, or > just a reluctance to merge TRIMs. That is exactly the case, and it's also an issue with online trim. I have work in progress block layer trim patches that always plug trims and have various TRIM merge improvements including support for ranged TRIMs. It needs a bit more work, but I hope I can post it later this week. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
