Differences between revisions 2 and 3

While benchmarks are a very difficult exercice and as such the results must be considered carefully, they are still interesting to compare the respective performance between the solutions for different workloads.

This page will try to keep an eye on the relative performances of HVM Xen and KVM: the guest system is a "unmodified OS".

For the following 2 tests, the system is an Intel core 2 duo 2.4Ghz w/ 2GB RAM running the latest available versions:

for Xen: opensource Xen 3.1.0 + Dom0 kernel based on kernel.org 2.6.18
for KVM: kvm-60 on a 2.6.23

The guest used in both case is the exact same VM (non-paravirtualised 64 bit Debian etch with 256 MB RAM).

Guest system boot-up time

plateform	time in seconds
Xen	23
KVM	20

Kernel compilation benchmark

Time to compile a 2.6.24 allnoconfig

first try - cold cache

plateform	real time	user time	sys time
Xen	1m53	1m06	0m43
KVM	1m03	1m06	0m33

second try - w/ cache

plateform	real time	user time	sys time
Xen	1m52	1m07	0m43
KVM	0m56	1m07	0m31

-  ⇤ ← Revision 2 as of 2008-02-11 18:01:09 → 
  Size: 1240
  Editor: GildasLeNadan
  Comment:
+   ← Revision 3 as of 2008-02-11 18:55:45 → ⇥
  Size: 1251
  Editor: GildasLeNadan
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-While benchmarks are a very difficult exercice and as such the results must be considered carefully, they are still interesting to compare the respective performance between the solutions for different workloads. This page will try to keep an eye on the relative performances of Xen (opensource version) and KVM for a non paravirtualized CPU (i-e with HVM).
+While benchmarks are a very difficult exercice and as such the results must be considered carefully, they are still interesting to compare the respective performance between the solutions for different workloads.
 Line 3:
-For the following 2 tests, the system is an intel core 2 duo 2.4Ghz w/ 2GB RAM running the latest available versions:
+This page will try to keep an eye on the relative performances of HVM Xen and KVM: the guest system is a "unmodified OS".
 Line 5:
- * for xen: Xen 3.1.0 + Dom0 kernel based on kernel.org 2.6.18
+For the following 2 tests, the system is an Intel core 2 duo 2.4Ghz w/ 2GB RAM running the latest available versions:

 * for Xen: opensource Xen 3.1.0 + Dom0 kernel based on kernel.org 2.6.18
-Line 8:
+Line 10:
-The guest used in both case is the exact same VM (64 bit Debian etch with 256 MB RAM).
+The guest used in both case is the exact same VM (non-paravirtualised 64 bit Debian etch with 256 MB RAM).