diff options
Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/997.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/997.toml | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/997.toml b/gitlab/issues/target_missing/host_missing/accel_missing/997.toml new file mode 100644 index 000000000..e2459c593 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/997.toml @@ -0,0 +1,25 @@ +id = 997 +title = "Iothread is stuck at 100% CPU usage with virtio-scsi on QEMU 7.0.0" +state = "closed" +created_at = "2022-04-21T21:21:52.081Z" +closed_at = "2022-04-27T17:34:22.896Z" +labels = ["Storage", "device:virtio"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/997" +host-os = "Gentoo Unstable" +host-arch = "amd64" +qemu-version = "7.0.0" +guest-os = "Fedora 35 ISO (kernel 5.14.10), Windows 10 21H1" +guest-arch = "amd64" +description = """Starting with QEMU 7.0.0, the iothread associated attached to a virtio-scsi controller is stuck at 100% CPU usage. Bisected to: https://gitlab.com/qemu-project/qemu/-/commit/826cc32423db2a99d184dbf4f507c737d7e7a4ae + +- Works as expected without the iothread +- No issue with virtio-blk + iothread +- Same behavior regardless of io=threads/native/io_uring +- Same behavior with default vs increased queue count +- The issue is triggered when the guest OS initializes the virtio driver""" +reproduce = """1. Add virtio-scsi controller with iothread +2. Boot VM +3. Check per-thread CPU usage such as in htop""" +additional = """[fedora.log](/uploads/776fbf8e5b823d0ab326946684ef9022/fedora.log) + +[fedora.xml](/uploads/54879e5adfb227ddef79d382e86fc608/fedora.xml)""" |