Bug 201735
| Summary: | serial8250: too much work for irq4 | ||
|---|---|---|---|
| Product: | Networking | Reporter: | romas (rms200x) |
| Component: | Other | Assignee: | Stephen Hemminger (stephen) |
| Status: | NEW --- | ||
| Severity: | high | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.4.0-116-generic | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | LSHW log | ||
Created attachment 279549 [details] LSHW log Virtual machines loosing network access randomly. What happens when issue is present: - Network device on guest machine is lost. It's impossible to access machine. - Virsh console available for connection. PING from affected guest is available but with massive packet loss (20% ~ 70%). - Networking restart from the guest does not resolve problem. - When virsh editing and setting to: <cpu mode='host-passthrough'/> issue seems to be resolved (after reboot). Such issue observed on SUPERMICRO server. LSHW report attached.