On Thu, 2010-12-23 at 15:16 +0800, John McCabe-Dansted wrote: > On Thu, Dec 23, 2010 at 2:48 PM, Mike Cao <[email protected]> wrote: > > Scenario 1: > > 1.Initialize TWO zram devices with 100MB each. > ... > > Scenario 2: > > 1.Initialize ONE zram devices with 200MB > ... > > Both of scenarios,I can find 200MB swap new added.then What's the > > difference between the two scenarios ,especially for performance > > influence? > > Probably not much. I imagine the main difference is that in Scenario 1 > you can adjust the amount of compcache more easily as you have the > option of disabling one of the two 100MB swap devices. Hi ,I also think so.
Please look at http://code.google.com/p/compcache/wiki/zcacheIOzone ,the last 2 items in details. *Separate partitions (all ext4) for: /boot, / and /home. So, three separate zcache pools *Each pool with default memlimit: 10% of RAM (memory is allocated on-demand and is not pre-allocated) I wonder whether the /dev/zramX means zcache pools ?if it is ,why need three? > > Presumably Scenario 1 uses up a little more memory. It may also reduce > lock contention slightly on machines with lots of cores, but I am not > familiar enough with the code to know if that is the case. > -- Best Regards! Mike _______________________________________________ linux-mm-cc mailing list [email protected] http://lists.laptop.org/listinfo/linux-mm-cc
