Messages in this thread |  | | From | Albert Cahalan <> | Subject | Re: striped swapping? | Date | Mon, 29 Apr 1996 17:52:38 -0400 (EDT) |
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>>>> If I have two swap partitions on two separate hard drives >>>> (on separate busses) under linux is the swapper clever enough >>>> to strip (even corsely) bewteen them? (I'm guessing you _can_ >>>> have more than one swap partition active at once). >>> >>> Yes, IF you are using the new swapon from util-linux-2.5 or >>> later, AND you use the new priority flags to give both your >>> swap partitions the same priority. > >> Hi! I have been using the MD (multiple device) driver to have a swap >> partition over two disks. Does it mean it is not necessary anymore to >> use the MD driver for striped swapping? > > Yes, that's what I said. Swap striping has been around in 1.3 for FAR > longer than md has been stable for.
Swap striping looks obsolete to me. The md driver gives you more options. It lets you put partitions together so that they have the same priority and are in physical order, or lets you stripe them with the right stripe size. It is more important for the swap code to give the correct priority, and the easiest way to do this is with swapon order.
I think many people have a swap partition plus an extra swap file or a swap partition on a busy/slow disk. I don't think striped swap is good for most people.
I'd like to let md do it's job (striping) and let the swap code do it's job (priority).
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