I am trying to setup mysql on XEN. I need to set it up on NFS so I can migrate
the domain when needed.
I am getting unexpected results and wanted to get some feedback.
Here is my setup:
NFS server
Dual 2.0 Ghz AMD Opteron
2GB of RAM
Broadcom GB NIC
Standard Fedora Core 3 (FC3)
Mysql w/tpc-c medium databases on the NFS share
XenU filesystem on the NFS share
Xen machine
Dual 2.0 Ghz AMD Opteron
2GB of RAM
Broadcom GB NIC
FC3 w/XEN kernel patch
Dom0 = 512MB RAM
DomU = 512MB RAM
TPC-C client
PIII 2.0 Ghz
512 MB RAM
Standard Fedora Core 2
TCP-C client
Results using the tpc-c benchmark:
Baseline ~3300 new-ops per second
Machine 2 booted to the standard FC3
Xen0 ~ 1700 new-ops per second
Machine 2 booted to Xen kernel with 512MB of RAM
XenU ~500 new ops per second
Machine 2 booted to Xen kernel with 512MB of RAM
DomU booted from NFS share with 512MB of RAM
Am I missing something here or is that much degradation expected when booting a
virtual machine over NFS.
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> I am trying to setup mysql on XEN. I need to set it up on > NFS so I can migrate the domain when needed.I''d use GNBD rather than NFS in situations where performance matters. Also, you should be using 2.0-testing for benchmarking purposes until we push out 2.0.4, as the default kernel config had debugging turned on in 2.0.1-3. Ian> > > I am getting unexpected results and wanted to get some feedback. > > > > Here is my setup: > > > > 1. NFS server > > Dual 2.0 Ghz AMD Opteron > > 2GB of RAM > > Broadcom GB NIC > > Standard Fedora Core 3 (FC3) > > Mysql w/tpc-c medium databases on the NFS share > > XenU filesystem on the NFS share > > > > 2. Xen machine > > Dual 2.0 Ghz AMD Opteron > > 2GB of RAM > > Broadcom GB NIC > > FC3 w/XEN kernel patch > > Dom0 = 512MB RAM > > DomU = 512MB RAM > > > > 3. TPC-C client > > PIII 2.0 Ghz > > 512 MB RAM > > Standard Fedora Core 2 > > TCP-C client > > > > Results using the tpc-c benchmark: > > Baseline ~3300 new-ops per second > > Machine 2 booted to the standard FC3 > > Xen0 ~ 1700 new-ops per second > > Machine 2 booted to Xen kernel with 512MB of RAM > > XenU ~500 new ops per second > > Machine 2 booted to Xen kernel with 512MB of RAM > > DomU booted from NFS share with 512MB of RAM > > > > Am I missing something here or is that much degradation > expected when booting a virtual machine over NFS. > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com >------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Neugebauer, Rolf
2005-Jan-24 23:29 UTC
RE: [Xen-devel] MYSQL bechmark results on XEN and NFS
Also, for the baseline, do you limit the amount of memory linux gets to 512MB or are you using the full 2GB? Rolf> -----Original Message----- > From: xen-devel-admin@lists.sourceforge.net [mailto:xen-devel- > admin@lists.sourceforge.net] On Behalf Of Ian Pratt > Sent: 24 January 2005 23:22 > To: jessie smart; xen-devel@lists.sourceforge.net > Subject: RE: [Xen-devel] MYSQL bechmark results on XEN and NFS > > > I am trying to setup mysql on XEN. I need to set it up on > > NFS so I can migrate the domain when needed. > > I''d use GNBD rather than NFS in situations where performance matters. > > Also, you should be using 2.0-testing for benchmarking purposes untilwe> push out 2.0.4, as the default kernel config had debugging turned onin> 2.0.1-3. > > Ian > > > > > > > I am getting unexpected results and wanted to get some feedback. > > > > > > > > Here is my setup: > > > > > > > > 1. NFS server > > > > Dual 2.0 Ghz AMD Opteron > > > > 2GB of RAM > > > > Broadcom GB NIC > > > > Standard Fedora Core 3 (FC3) > > > > Mysql w/tpc-c medium databases on the NFS share > > > > XenU filesystem on the NFS share > > > > > > > > 2. Xen machine > > > > Dual 2.0 Ghz AMD Opteron > > > > 2GB of RAM > > > > Broadcom GB NIC > > > > FC3 w/XEN kernel patch > > > > Dom0 = 512MB RAM > > > > DomU = 512MB RAM > > > > > > > > 3. TPC-C client > > > > PIII 2.0 Ghz > > > > 512 MB RAM > > > > Standard Fedora Core 2 > > > > TCP-C client > > > > > > > > Results using the tpc-c benchmark: > > > > Baseline ~3300 new-ops per second > > > > Machine 2 booted to the standard FC3 > > > > Xen0 ~ 1700 new-ops per second > > > > Machine 2 booted to Xen kernel with 512MB of RAM > > > > XenU ~500 new ops per second > > > > Machine 2 booted to Xen kernel with 512MB of RAM > > > > DomU booted from NFS share with 512MB of RAM > > > > > > > > Am I missing something here or is that much degradation > > expected when booting a virtual machine over NFS. > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam protection around > > http://mail.yahoo.com > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IntelliVIEW -- InteractiveReporting> Tool for open source databases. Create drag-&-drop reports. Save time > by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. > Download a FREE copy at http://www.intelliview.com/go/osdn_nl > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Have you tested mysql on iSCSI disks? If not I can do so using athlon 2000+ xen host and iscsi target servers over 100Mbps ethernet if you can toss me your testing scripts. :) On Mon, 2005-01-24 at 23:22 +0000, Ian Pratt wrote:> > I am trying to setup mysql on XEN. I need to set it up on > > NFS so I can migrate the domain when needed. > > I''d use GNBD rather than NFS in situations where performance matters. > > Also, you should be using 2.0-testing for benchmarking purposes until we > push out 2.0.4, as the default kernel config had debugging turned on in > 2.0.1-3. > > Ian > > > > > > > I am getting unexpected results and wanted to get some feedback. > > > > > > > > Here is my setup: > > > > > > > > 1. NFS server > > > > Dual 2.0 Ghz AMD Opteron > > > > 2GB of RAM > > > > Broadcom GB NIC > > > > Standard Fedora Core 3 (FC3) > > > > Mysql w/tpc-c medium databases on the NFS share > > > > XenU filesystem on the NFS share > > > > > > > > 2. Xen machine > > > > Dual 2.0 Ghz AMD Opteron > > > > 2GB of RAM > > > > Broadcom GB NIC > > > > FC3 w/XEN kernel patch > > > > Dom0 = 512MB RAM > > > > DomU = 512MB RAM > > > > > > > > 3. TPC-C client > > > > PIII 2.0 Ghz > > > > 512 MB RAM > > > > Standard Fedora Core 2 > > > > TCP-C client > > > > > > > > Results using the tpc-c benchmark: > > > > Baseline ~3300 new-ops per second > > > > Machine 2 booted to the standard FC3 > > > > Xen0 ~ 1700 new-ops per second > > > > Machine 2 booted to Xen kernel with 512MB of RAM > > > > XenU ~500 new ops per second > > > > Machine 2 booted to Xen kernel with 512MB of RAM > > > > DomU booted from NFS share with 512MB of RAM > > > > > > > > Am I missing something here or is that much degradation > > expected when booting a virtual machine over NFS. > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam protection around > > http://mail.yahoo.com > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting > Tool for open source databases. Create drag-&-drop reports. Save time > by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. > Download a FREE copy at http://www.intelliview.com/go/osdn_nl > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel