3 ms·
0.2% really isn't free. If you have a data set of 10 TB (one small-ish HDD right now, or one large SSD), that's ~20 GiB in page tables alone. If you can use 2MB
by Sesse__ 4y ago
0.2% really isn't free. If you have a data set of 10 TB (one small-ish HDD right now, or one large SSD), that's ~20 GiB in page tables alone. If you can use 2MB pages, then sure, but I would assume that also limits your page-in granularity.
- loeg 4y agoOh, you're right. I wasn't remembering we needed PTEs to cover the data not paged in as well as the data in RAM. Sorry.