On Thu, Jun 2, 2011 at 2:43 PM, Dave Czajkowski <[email protected]> wrote: > Is there a way to disable or limit the amount of SwapCache? I understand > it's function, but the double allocation of these pages is causing my low > memory alerts to trip.
Your anonymous page becomes swapcache when a copy is written to swap but not yet lost by giving it to someone else (and thus may still be used) or after swap-in when the process did not modify the contents yet. When you swap to VDISK you do have an additional copy in real memory, but with difference access patterns (and more likely to be paged out by z/VM). Don't see how you can avoid other than by not swapping... Rob ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
