if someone has met this error report , this is on Hyper-V virthost is debian 6.0
when run stress on virthoast use uperf
root@SDZX:~# dmesg batch:31 [ 0.000000] ACPI: PM-Timer IO Port: 0x408 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x02] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x03] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x05] lapic_id[0x04] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x06] lapic_id[0x05] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x07] lapic_id[0x06] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x09] lapic_id[0x08] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x09] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x0a] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x0b] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x0c] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x0d] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x0e] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x10] lapic_id[0x0f] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x11] lapic_id[0x10] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x12] lapic_id[0x11] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x13] lapic_id[0x12] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x14] lapic_id[0x13] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x15] lapic_id[0x14] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x16] lapic_id[0x15] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x17] lapic_id[0x16] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x18] lapic_id[0x17] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x19] lapic_id[0x18] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1a] lapic_id[0x19] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1b] lapic_id[0x1a] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1c] lapic_id[0x1b] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1d] lapic_id[0x1c] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1e] lapic_id[0x1d] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x1f] lapic_id[0x1e] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x20] lapic_id[0x1f] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x21] lapic_id[0x20] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x22] lapic_id[0x21] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x23] lapic_id[0x22] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x24] lapic_id[0x23] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x25] lapic_id[0x24] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x26] lapic_id[0x25] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x27] lapic_id[0x26] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x28] lapic_id[0x27] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x29] lapic_id[0x28] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2a] lapic_id[0x29] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2b] lapic_id[0x2a] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2c] lapic_id[0x2b] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2d] lapic_id[0x2c] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2e] lapic_id[0x2d] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x2f] lapic_id[0x2e] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x30] lapic_id[0x2f] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x31] lapic_id[0x30] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x32] lapic_id[0x31] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x33] lapic_id[0x32] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x34] lapic_id[0x33] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x35] lapic_id[0x34] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x36] lapic_id[0x35] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x37] lapic_id[0x36] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x38] lapic_id[0x37] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x39] lapic_id[0x38] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x3a] lapic_id[0x39] disabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x3b] lapiWrite failed: Broken pipe