Re: [poll] virtualization platform for SOLR

2015-10-01 Thread Upayavira
What are you trying to achieve by using virtualisation? If it is just code separation, consider using containers and Docker rather than fully fledged VMs. CPU is shared, but each container sees its own view of its file system. Upayavira On Thu, Oct 1, 2015, at 07:47 AM, Bernd Fehling wrote: >

Re: [poll] virtualization platform for SOLR

2015-10-01 Thread Toke Eskildsen
Bernd Fehling wrote: > unfortunately we have to run VMs, otherwise we would waste hardware. > I thought other solr users are in the same situation but seams that > other users have tons of hardware available and we are the only one > having to use VMs. We have ~5

Re: [poll] virtualization platform for SOLR

2015-10-01 Thread Bernd Fehling
Hi Upayavira, best would be to have 4 dedicated servers, 2 for indexing (masters) and 2 for searching (slaves). Always one is online and one is standby in case of hardware failure or update of OS, JAVA or even SOLR. But I only get 256GB RAM machines with many CPUs which I have to share with

RE: [poll] virtualization platform for SOLR

2015-10-01 Thread Davis, Daniel (NIH/NLM) [C]
Original Message- From: Bernd Fehling [mailto:bernd.fehl...@uni-bielefeld.de] Sent: Thursday, October 01, 2015 2:48 AM To: solr-user@lucene.apache.org Subject: Re: [poll] virtualization platform for SOLR Hi Shawn, unfortunately we have to run VMs, otherwise we would waste hardwa

Re: [poll] virtualization platform for SOLR

2015-10-01 Thread Bernd Fehling
Hi Shawn, unfortunately we have to run VMs, otherwise we would waste hardware. I thought other solr users are in the same situation but seams that other users have tons of hardware available and we are the only one having to use VMs. Right, bare metal is always better than any VM. As you

Re: [poll] virtualization platform for SOLR

2015-10-01 Thread Bernd Fehling
Hi Toke, I don't get SSDs, only spinning drives. And as you mentioned, the impact of VMs is not that much if you use spinning drives. It is more the VM software that matters and thats why we use XEN and not KVM. With some tuning of sysctrl for the VMs it performs good, but bare-metal is still

[poll] virtualization platform for SOLR

2015-09-30 Thread Bernd Fehling
Dear solr users, while setting up some new servers (virtual machines) using XEN I was thinking about an alternative like KVM. My last tests with KVM is a while ago and XEN performed much better in the area of I/O and CPU usage. This lead me to the idea to start a poll about virtualization

Re: [poll] virtualization platform for SOLR

2015-09-30 Thread Shawn Heisey
On 9/30/2015 3:12 AM, Bernd Fehling wrote: > while setting up some new servers (virtual machines) using XEN I was > thinking about an alternative like KVM. My last tests with KVM is > a while ago and XEN performed much better in the area of I/O and > CPU usage. > This lead me to the idea to start