| jafa | seeing a possible problem with virtual memory reporting when using huge tlb pages | 17:17 |
|---|---|---|
| jafa | app allocates 97 x 1GB huge tlb pages (locked) using mmap64 so the app is using 97GB plus normal memory allocation | 17:18 |
| jafa | proc/n/status reports VmLck as 0kB and VmRSS as 3GB | 17:19 |
| jafa | all the common utils (top, htop, ps, etc) report 3GB of usage | 17:20 |
| jafa | proc/n/status: https://pastebin.com/JqiCMbs3 | 17:20 |
| jafa | this app also mmap's 1TB of NVMe space which is why the VmSize value is >1TB | 17:22 |
| jafa | it is a problem for administrators who run top and see 3GB of memory usage when the app is actually using 97+3=100GB of ram | 17:23 |
| jafa | should the kernel be reporting the 97GB of locked hugetlb pages in VmLck and VmRSS? | 17:33 |
| mouai | Hi | 19:13 |
Generated by irclog2html.py 2.7 by Marius Gedminas - find it at mg.pov.lt!