followup question: what is the largest process you've ever seen run? I am guessing a vm but maybe not?
On Tue, Mar 3, 2026 at 2:58 PM <[email protected]> wrote: > > From the hacked thinkpad X201 I'm typing this on: > > % cat /dev/swap > 68491845632 memory > 4096 pagesize > 524288 kernel > 1343866/15661303 user > 0/320000 swap > 23811/15661303 reclaim > 54772160/55446976/2147073280 kernel malloc > 72373216/72834080/1932365952 kernel draw > 3296/65568/16777216 kernel secret > > It's excessive, but that's what it came with; it's occasionally > useful for VMs in VMX. The machine was purchased before the > current shortages. > > Quoth ron minnich <[email protected]>: > > I am wondering, what is the largest memory you have seen on a Plan 9 > > system? > > > > In my case, it's been 32 GiB on an amd64. Is there something larger out > > there? > > > > One of the (many) reasons for NIX 2M page sizes was the limited address > > space of the "virtual mmu" in port/. To deal with heap larger than 1GiB, > > Nemo had this very clever idea, of using GiB PTEs when your heap hit the 1 > > GiB mark. This meant we needed only 512 PTEs for the first GiB (2M pages), > > and then 511 PTEs to reach 512 GiB. But we never had that much memory, of > > course. > > > > ron ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Ta60ba03129fc4e5b-Mca8d35e2047d9974796ef72f Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
