Author Topic: Page file fills up while RAM is not full, why?  (Read 571 times)

2022-06-20, 14:21:08

CrocsBlancs

  • Active Users
  • **
  • Posts: 44
    • View Profile
Hi,

I work on a scene that takes around 40Go of RAM while loaded in 3ds Max.
I have 128GB of RAM. After I've done few interactive renders, and worked a bit on the scene, by adding/modifying objects etc ... I can see that pagefile.sys on the system drive fills up to 10GB. When windows starts this file is only 0.8GB.

Why does pagefile.sys fills up whereas there is still a lot of RAM available? It does not seem very efficient. I would expect pagefile.sys increase only when there's no more RAM available.

Thank you for the help,

2022-06-20, 14:46:20
Reply #1

TomG

  • Corona Team
  • Active Users
  • ****
  • Posts: 4499
    • View Profile
RAM used when loaded is not the same as RAM required while rendering. You can add a pretty detailed set of memory breakdowns in the Render Stamp, head to the system tab of the render settings, click the ? to see the list for things like %mc Memory used by Corona, %mcp Peak Memory used by Corona, %mpp Peak Virtual Memory Used by Max + Corona etc.
Tom Grimes | chaos-corona.com
Product Marketing Manager | contact us

2022-06-21, 07:21:55
Reply #2

CrocsBlancs

  • Active Users
  • **
  • Posts: 44
    • View Profile
Hi TomG,

Thank you for your support.
The options you mention are very useful indeed.
But I still don't understand why pagefile.sys fills up while the peak virtual memory used by 3ds Max + Corona is 69GB, and the virtual memory used by Windows is 102GB. All these values are less than my total amount of RAM which is 128GB, so why does windows fills up the pagefile.sys?