On 01/11/2017 09:12 AM, hch@xxxxxxxxxxxxx wrote: > On Wed, Jan 11, 2017 at 04:08:31PM +0000, Bart Van Assche wrote: >> A typical Ethernet network adapter delays the generation of an interrupt >> after it has received a packet. A typical block device or HBA does not delay >> the generation of an interrupt that reports an I/O completion. > > NVMe allows for configurable interrupt coalescing, as do a few modern > SCSI HBAs. Unfortunately it's way too coarse on NVMe, with the timer being in 100 usec increments... I've had mixed success with the depth trigger. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
