old blog,

Qemu slow disk throughput

Izhar Firdaus Izhar Firdaus Follow Support Mar 07, 2008 · 1 min read
Qemu slow disk throughput
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
I am doing some development for a UN community site, using Zope/Plone. I uses Qemu for hosting the guest OS for my development environment.

For 2 days, I keep wondering why Zope/Plone loads damn slow on the qemu machine eventhough I have allocated both cores of the processor, and 512RAM for it. 15 minutes simply to start up is really not desirable. I kept on investigating and guess what:

[root@unapcict ~]# /sbin/hdparm -t /dev/hda

/dev/hda:
Timing buffered disk reads: 18 MB in 3.03 seconds = 5.95 MB/sec


Just for a comparison, the host hdd's speed:

[root@Nobuyuki ~]# /sbin/hdparm -t /dev/sdc

/dev/sdc:
Timing buffered disk reads: 174 MB in 3.01 seconds = 57.71 MB/sec


Darn.. So, thats what the reason. Dear lazywebs, anybody know how to improve the speed??.
Written by Izhar Firdaus Follow Support
I'm a system architect, data engineer and developer advocate with passion in Free / Open Source software, entrepreneurship, community building, education and martial art. I take enjoyment in bridging and bringing together different FOSS technologies to help businesses and organizations utilize IT infrastructure to aid and optimize their business and organizational process.

Malaysian Election 2008

Seems like its getting near, and people from both Barisan National (BN) and Opposition parties started doing their usual crazy stuff....

In old blog, Mar 06, 2008

« Previous Post

A bunch of CeBIT exhibitors busted for MP3 patent infringement

Something I saw at Fedora Planet from Jeremy Katz's post Who says the mp3 patents aren't enforced?CeBIT crackdown: 51 exhibitors bust...

In old blog, Mar 07, 2008

Next Post »