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Diffstat (limited to 'results/scraper/launchpad-without-comments/1811533')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1811533 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1811533 b/results/scraper/launchpad-without-comments/1811533 new file mode 100644 index 000000000..f6be5f0c9 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1811533 @@ -0,0 +1,31 @@ +Unstable Win10 guest with qemu 3.1 + huge pages + hv_stimer + +Host: +Gentoo linux x86_64, kernel 4.20.1 +Qemu 3.1.0 +CPU: Intel i7 6850K +Chipset: X99 + +Guest: +Windows 10 Pro 64bit (1809) +Machine type: pc-q35_3.1 +Hyper-V enlightenments: hv_stimer,hv_reenlightenment,hv_frequencies,hv_vapic,hv_reset,hv_synic,hv_runtime,hv_vpindex,hv_time,hv_relaxed,hv_spinlocks=0x1fff +Memory: 16GB backed by 2MB huge pages + +Issue: +Once guest is started, log gets flooded with: + +qemu-system-x86_64: vhost_region_add_section: Overlapping but not coherent sections at 103000 + +or + +qemu-system-x86_64: vhost_region_add_section:Section rounded to 0 prior to previous 1f000 + +(line endings change) + +and as time goes guest loses network access (virtio-net-pci) and general performance diminishes to extent of freezing applications. + +Observations: +1) problem disappears when hv_stimer is removed +2) problem disappears when memory backing with huge pages is disabled +3) problem disappears when machine type is downgraded to pc-q35_3.0 \ No newline at end of file |