On Tue, Aug 30, 2022 at 12:53:37PM +0000, lic121 wrote: > On Tue, Aug 30, 2022 at 01:59:16PM +0300, Dmitry Kozlyuk wrote: > > Thank you for the most detailed info! > > > > 1. If you run the poisoner program the second time, > > does it also see dirty memory immediately after mmap()? > > No, running the poisoner program again doesn't show dirty memory > immediately after mmap. > > I assume that there are some differences on how my poisoner program > using hugepage and how testpmd using hugepage. I notice that testpmd > leaves some files under /dev/hugepages/rtemap_xxx even after testpmd > process exits. But my program didn't create any file under > /dev/hugepages/. > > > > 2. Kernel 4.19.90-2102 patchlevel 2102 is very high, > > can there be any unusual patches applied? > > Your host has "compute" in its name, > > can it have patches that trade security for performance? > > I may need to talk to the kernel team. Indeed, I failed to reproduce the > issue on a Virtual Machine of kernel 4.18.0-305.12.1.el8_4.x86_64.(2M > page size insetad of 1G)
Verified that this issue is caused by an down stream linux kernel issue. Thanks for your attention.
