Tags:
view all tags
<!-- keep this as a security measure: * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup,Main.LCGAdminGroup * Set ALLOWTOPICRENAME = Main.TWikiAdminGroup,Main.LCGAdminGroup #uncomment this if you want the page only be viewable by the internal people #* Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.LCGAdminGroup --> KeyWords: _(see the KeyWords page for guidelines on what to put here.)_ %TOC% ---+ Comparison between Xen and VMWare ---++ Disk performance ---+++ Xen The test is done over /root, where the disk is a *logical volume* specially for the virtual machine. Raid1 over two disks is behind. <verbatim>Dec 06 13:34 [root@pub:~]# dd if=/dev/zero of=/root/thing bs=1024 count=1024k 1048576+0 records in 1048576+0 records out 1073741824 bytes (1.1 GB) copied, 12.9547 seconds, 82.9 MB/s Dec 06 11:55 [root@pub:~]# bonnie++ -u root -s 7000 -r 0 -b -d /root/ Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP pub.lcg.cscs. 7000M 451 98 53494 11 29537 1 807 66 94265 2 257.5 0 Latency 23957us 2261ms 2977ms 648ms 1330ms 1754ms Version 1.96 ------Sequential Create------ --------Random Create-------- pub.lcg.cscs.ch -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 55 0 +++++ +++ 61 0 65 0 +++++ +++ 64 0 Latency 6000ms 499us 3115ms 2426ms 15us 3305ms Dec 06 14:08 [root@pub:~]# dd if=/root/thing of=/dev/null 2097152+0 records in 2097152+0 records out 1073741824 bytes (1.1 GB) copied, 9.39562 seconds, 114 MB/s</verbatim> ---+++ VMWare The test is done over /root, where the disk is a *file* on the host's filesystem. Raid1 over two disks is behind. <verbatim>[root@ppwn01 ~]# dd if=/dev/zero of=/root/thing bs=1024 count=1024k 1048576+0 records in 1048576+0 records out 1073741824 bytes (1.1 GB) copied, 9.29409 seconds, 116 MB/s [root@ppwn01 ~]# bonnie++ -u root -s 5000 -r 0 -b -d /root/ Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP ppwn01.lcg.cs 5000M 1208 91 17624 3 49144 3 3918 95 113098 5 368.3 2 Latency 6520us 6915ms 287ms 8979us 41605us 120ms Version 1.96 ------Sequential Create------ --------Random Create-------- ppwn01.lcg.cscs.ch -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 80 0 +++++ +++ 80 0 80 0 +++++ +++ 80 0 Latency 137ms 498us 84625us 149ms 16us 89699us [root@ppwn01 ~]# dd if=/root/thing of=/dev/null 2097152+0 records in 2097152+0 records out 1073741824 bytes (1.1 GB) copied, 9.67018 seconds, 111 MB/s</verbatim> ---++ Compile kernel ---+++ Xen <verbatim>Dec 06 13:28 [root@pub:~]# time tar -xf linux-2.6.36.1.tar real 0m33.963s user 0m0.124s sys 0m1.600s Dec 06 13:39 [root@pub:linux-2.6.36.1]# make defconfig Dec 06 13:39 [root@pub:linux-2.6.36.1]# time make [...] real 10m11.454s user 6m28.432s sys 2m12.040s </verbatim> ---+++ VMWare <verbatim>[root@ppwn01 ~]# time tar -xf linux-2.6.36.1.tar real 0m14.374s user 0m0.113s sys 0m1.707s [root@ppwn01 linux-2.6.36.1]# make defconfig [root@ppwn01 linux-2.6.36.1]# time make [...] real 9m41.033s user 6m59.439s sys 2m39.054s</verbatim> ---++ HEPSPEC06 ---+++ Xen ---+++ VMWare ---++ Readers' comments %COMMENT{type="below"}%
Edit
|
Attach
|
Watch
|
P
rint version
|
H
istory
:
r5
|
r4
<
r3
<
r2
<
r1
|
B
acklinks
|
V
iew topic
|
Raw edit
|
More topic actions...
Topic revision: r1 - 2010-12-06
-
PabloFernandez
LCGTier2
Log In
(Topic)
LCGTier2 Web
Create New Topic
Index
Search
Changes
Notifications
Statistics
Preferences
Users
Entry point / Contact
RoadMap
ATLAS Pages
CMS Pages
CMS User Howto
CHIPP CB
Outreach
Technical
Cluster details
Services
Hardware and OS
Tools & Tips
Monitoring
Logs
Maintenances
Meetings
Tests
Issues
Blog
Home
Site map
CmsTier3 web
LCGTier2 web
PhaseC web
Main web
Sandbox web
TWiki web
LCGTier2 Web
Users
Groups
Index
Search
Changes
Notifications
RSS Feed
Statistics
Preferences
P
View
Raw View
Print version
Find backlinks
History
More topic actions
Edit
Raw edit
Attach file or image
Edit topic preference settings
Set new parent
More topic actions
Warning: Can't find topic "".""
Account
Log In
Edit
Attach
Copyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki?
Send feedback