Basic Xen question and game server

hebeles · 05-22-2014, 03:40 PM

Hello,

Sorry i am not english speaker.

I get Xen VPS with 12 cpu(s).

Code:

[root@localhost csnet]# sudo dmesg | grep Xen
DMI: Xen HVM domU, BIOS 4.1.5 11/28/2013
ACPI: RSDP 00000000000ea020 00024 (v02    Xen)
ACPI: XSDT 00000000fc00eb80 00044 (v01    Xen      HVM 00000000 HVML 00000000)
ACPI: FACP 00000000fc00e940 000F4 (v04    Xen      HVM 00000000 HVML 00000000)
ACPI: DSDT 00000000fc002c40 0BC75 (v02    Xen      HVM 00000000 INTL 20090123)
ACPI: APIC 00000000fc00ea40 000D8 (v02    Xen      HVM 00000000 HVML 00000000)
ACPI: HPET 00000000fc00eb20 00038 (v01    Xen      HVM 00000000 HVML 00000000)
ACPI: WAET 00000000fc00eb58 00028 (v01    Xen      HVM 00000000 HVML 00000000)
Xen version 4.1.
Xen Platform PCI: I/O protocol version 1
Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs.
Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks.
Booting paravirtualized kernel on Xen
Xen HVM callback vector for event delivery is enabled
Initialising Xen virtual ethernet driver.

Box CentOS 6.5 and kernel follow:
2.6.32-431.17.1.el6.x86_6

How build Xen kernel? Game server performance very poor. This problem from default CentOS kernel?

Thank you.

dijetlo · 05-26-2014, 04:40 PM

Quote:

Verifying Xen Project Linux PVHVM drivers are using optimizations

If you're Using at least Xen Project 4.0.1 hypervisor and the new upstream Linux PVHVM drivers available in Linux 2.6.36 and later versions, follow these steps:
Make sure you're using the PVHVM drivers.
Add "loglevel=9" parameter for the HVM guest Linux kernel cmdline in grub.conf.
Reboot the guest VM.
Check "dmesg" for the following text: "Xen HVM callback vector for event delivery is enabled".

Quote:

Booting paravirtualized kernel on Xen
Xen HVM callback vector for event delivery is enabled

Quote:

How build Xen kernel?

wiki.centos.org/HowTos/Xen/Xen4QuickStart