[linux-mm-cc] Question using compacache(zram) with multi devices

John McCabe-Dansted gmatht at gmail.com
Fri Dec 24 02:05:09 EST 2010


On Fri, Dec 24, 2010 at 2:48 PM, Mike Cao <bcao at redhat.com> wrote:
> On Thu, 2010-12-23 at 19:07 +0800, John McCabe-Dansted wrote:
>> On Thu, Dec 23, 2010 at 6:24 PM, Mike Cao <bcao at redhat.com> wrote:
>> > I wonder whether the /dev/zramX means zcache pools?
>>
>> From the page you linked "zram can be used to provide a compressed
>> swap, while zcache compresses filesystem cache pages". AFAICT zram and
>> zcache are two different tools for two different purposes.
>>
> I thought they should be the same thing, zcache now called zram.if
> not ,how we can make zcache tool ?

I haven't found instructions on how to use zcache, but the difference
between zram and zcache is discussed here:

http://lwn.net/Articles/397574/

-- 
John C. McCabe-Dansted


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