I have the problem that Google Chrome will limit itself to about
32 GB of RAM split over many tabs and processes.
When it approaches
32 GB RAM usage it will start to load pages really slowly, or show the out of memory error on some tabs.
All search results that I found about Chrome RAM consumption issues are about it taking too much memory. But my problem is it's not using enough.
My test was done with about ~500 tabs, no single process is using a huge chunk of memory, the usage is spread out evenly across many processes.
I tested this on a laptop with
64 GB physical RAM and 4 cores. And on a desktop computer with
128 GB physical RAM and 12 cores. According to TaskManager / Process explorer there should be plenty free memory that Chrome is not taking advantage of. And yet rather than use more memory it is slowing down or throwing out of memory errors.
At first, I thought maybe this is a problem with the GPU acceleration reserving extra memory that I don't see. But I don't think this is the case any more since I tested on the desktop computer which is not in any GPU memory limit as far as I can tell and doesn't have an iGPU.
Tested with: Chrome
Version 100.0.4896.127 (Official Build) (64-bit)
10.0.19044.1645 (21H2). But I had this problem for the last 2 years at least. It's not a recent regression. I am using a
Pro license not a
Home license for Windows 10 if that makes a difference.
My question is:
- Am I overlooking some inherent or configurable Chrome memory self limit?
- Am I running into some limit in Windows 10 where it will not
give more than half the memory or
32 GBto a single group of processes or anything similar?
I would be happy to do any additional tests and or provide more information!
Update: I have tried disabling automatically managed page size in Windows and set a static size instead (min+max size are now both same size as physical RAM size) according to this blogpost, found via this comment and rebooted.
I also tried to start Chrome without extensions. But neither did help. I am still getting the same OOM errors "Not enough memory to open this page Try closing other tabs or programs to free up memory" at about
32 GB /
64 GB used on the laptop and
40 GB /
128 GB used on the desktop.
What is a bit suspicious to me is that the error occurs not at half the RAM used on the desktop but approximately
8 GB higher than on the laptop. That's pretty much the size of the desktop's Nvidia GPU's on-board GDDR. Maybe I should try starting Chrome without GPU acceleration and see if it wants to use more memory then?
The issue is gone if I disable "Use hardware acceleration when available" in the settings. I have tested it with 900 tabs over at least a month and I had no problems with out of memory errors. Of course disabling hardware acceleration completely is not a satisfactory fix.