Using sanboot --no-describe to boot iso image is extremely slow compare to memdisk

[robinsmidsrod]

sanboot reads block by block, as they are requested, which is why you see multiple requests for 63488 bytes. memdisk downloads the entire ISO image into memory in one go. Obviously the memdisk option is faster if you require the entire image to be loaded, not just parts of it. The memdisk option uses more total memory (twice as much, if I recall), which might be an issue depending on the hardware you're dealing with (how much memory it has installed).

Glad you figured it out.