On Fri, Nov 29, 2013 at 3:40 AM, Scott Marlowe wrote:
> On Wed, Nov 27, 2013 at 7:58 PM, Dong Ye wrote:
>
>> As Heikki commented, VMware recently compared Postgres performance in
>> an ESX (5.1) VM versus in a comparable native Linux. We saw 1.
>> ESX-level locking causes no vertical scalability
On Wed, Nov 27, 2013 at 7:58 PM, Dong Ye wrote:
> As Heikki commented, VMware recently compared Postgres performance in
> an ESX (5.1) VM versus in a comparable native Linux. We saw 1.
> ESX-level locking causes no vertical scalability degradation, 2.
FYI Vmware has an optimized version of Postg
> There was some earlier comment in this discussion about not using NFS
> datastores for Postgres VMDK's. Would you think you'd see a difference in
> scalability behavior or performance in these tests if a NFS datastore would
> be used instead? Provided the architecture is properly setup for tha
> >
> > I would also make sure to check that the hypervisor does write to
> permanent storage before returning to the VM with acknowledgement.
> >
> In the case of ESX, there is no such concern per
> http://kb.vmware.com/kb/1008542.
Very useful info!
> As Heikki commented, VMware recently comp
On Mon, Nov 25, 2013 at 4:00 PM, Gudmundsson Martin (mg)
wrote:
>
> I would also make sure to check that the hypervisor does write to permanent
> storage before returning to the VM with acknowledgement.
>
In the case of ESX, there is no such concern per
http://kb.vmware.com/kb/1008542.
As Heikki
On Tue, Nov 26, 2013 at 11:18:41AM -0800, Craig James wrote:
- On Tue, Nov 26, 2013 at 10:40 AM, Ben Chobot wrote:
-
- > On Nov 26, 2013, at 9:24 AM, Craig James wrote:
- >
- > So far I'm impressed by what I've read about Amazon's Postgres instances.
- > Maybe the reality will be disappointing, b
On Tue, Nov 26, 2013 at 10:40 AM, Ben Chobot wrote:
> On Nov 26, 2013, at 9:24 AM, Craig James wrote:
>
> So far I'm impressed by what I've read about Amazon's Postgres instances.
> Maybe the reality will be disappointing, but (for example) the idea of
> setting up streaming replication with one
On Nov 26, 2013, at 9:24 AM, Craig James wrote:
> So far I'm impressed by what I've read about Amazon's Postgres instances.
> Maybe the reality will be disappointing, but (for example) the idea of
> setting up streaming replication with one click is pretty appealing.
Where did you hear this was
On Tue, Nov 26, 2013 at 11:31 AM, Josh Berkus wrote:
> On 11/25/2013 12:01 PM, Lee Nguyen wrote:
>> Hi,
>>
>> Having attended a few PGCons, I've always heard the remark from a few
>> presenters and attendees that Postgres shouldn't be run inside a VM. That
>> bare metal is the only way to go.
>
>
On 11/25/2013 12:01 PM, Lee Nguyen wrote:
> Hi,
>
> Having attended a few PGCons, I've always heard the remark from a few
> presenters and attendees that Postgres shouldn't be run inside a VM. That
> bare metal is the only way to go.
This is pretty dated advice. Early VMs had horrible performanc
On Tue, Nov 26, 2013 at 8:29 AM, David Boreham wrote:
> On 11/26/2013 7:26 AM, Craig James wrote:
>
>>
>> For those of us with small (a few to a dozen servers), we'd like to get
>> out of server maintenance completely. Can anyone with experience on a cloud
>> VM solution comment? ...
>>
>
> I've
On 11/26/2013 7:26 AM, Craig James wrote:
For those of us with small (a few to a dozen servers), we'd like to
get out of server maintenance completely. Can anyone with experience
on a cloud VM solution comment? Do the VM solutions provided by the
major hosting companies have the same good pe
On 11/26/2013 08:51 AM, Boszormenyi Zoltan wrote:
2013-11-25 21:19 keltezéssel, Heikki Linnakangas írta:
On 25.11.2013 22:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM.
That
On 11/26/2013 09:26 AM, Craig James wrote:
On 25.11.2013 22:01, Lee Nguyen wrote:
Why shouldn't we run Postgres in a VM? What are the
downsides? Does anyone
have any metrics or benchmarks with the latest Postgres?
For those of us with small (a fe
>
> On 25.11.2013 22:01, Lee Nguyen wrote:
>>
>>>
>>> Why shouldn't we run Postgres in a VM? What are the downsides? Does
>>> anyone
>>> have any metrics or benchmarks with the latest Postgres?
>>>
>>
For those of us with small (a few to a dozen servers), we'd like to get out
of server maintenance
Zoltan,
* Boszormenyi Zoltan (z...@cybertec.at) wrote:
> When the virtual disk is a disk file on the host machine, we've measured
> 20% or lower. The host used Fedora 19/x86_64 with IIRC a 3.10.x Linux kernel
> with EXT4 filesystem (this latter is sure, not IIRC). The effect was observed
> both un
2013-11-25 21:19 keltezéssel, Heikki Linnakangas írta:
On 25.11.2013 22:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM. That
bare metal is the only way to go.
Here at work we we
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On 11/25/2013 09:01 PM, Lee Nguyen wrote:
> Hi,
>
> Having attended a few PGCons, I've always heard the remark from a
> few presenters and attendees that Postgres shouldn't be run inside
> a VM. That bare metal is the only way to go.
>
[]
Which scenario do you have in mind? We don't add servers to scale out, we
only scale up in each single project. We use SAN for storage, so if we need
to increase disk space we provide more through LVM.
There is one case we need to move data around, when we relocate projects
over to new storage (eg
On Tue, 26 Nov 2013, Xenofon Papadopoulos wrote:
We have been running several Postgres databases on VMs for the last 9
months. The largest one currently has a few hundreds of millions of rows
(~1.5T of data, ~100G of frequently queried data ) and performs at ~1000
tps. Most of our transactions a
We have been running several Postgres databases on VMs for the last 9
months. The largest one currently has a few hundreds of millions of rows
(~1.5T of data, ~100G of frequently queried data ) and performs at ~1000
tps. Most of our transactions are part of a 2PC, which effectively results
to high
On Mon, Nov 25, 2013 at 4:57 PM, David Lang wrote:
> On Mon, 25 Nov 2013, Merlin Moncure wrote:
>
>> On Mon, Nov 25, 2013 at 2:01 PM, Lee Nguyen wrote:
>>>
>>> Hi,
>>>
>>> Having attended a few PGCons, I've always heard the remark from a few
>>> presenters and attendees that Postgres shouldn't be
On Mon, 25 Nov 2013, Merlin Moncure wrote:
On Mon, Nov 25, 2013 at 2:01 PM, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM. That
bare metal is the only way to go.
Here at work we
On Mon, Nov 25, 2013 at 2:01 PM, Lee Nguyen wrote:
> Hi,
>
> Having attended a few PGCons, I've always heard the remark from a few
> presenters and attendees that Postgres shouldn't be run inside a VM. That
> bare metal is the only way to go.
>
> Here at work we were entertaining the idea of runni
On 26/11/13 09:28, Andrew Dunstan wrote:
On 11/25/2013 03:19 PM, Heikki Linnakangas wrote:
On 25.11.2013 22:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM.
That
bare metal is t
Hi!
We have virtualized several hundreds of production databases, mostly Oracle
and DB2 but a few postgres as well, and we have seen a very positive effect in
doing this.
We might loose a little bit in virtualization overhead but have gained a lot in
flexibility and managebility.
My tips are t
On 11/25/2013 03:19 PM, Heikki Linnakangas wrote:
On 25.11.2013 22:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM.
That
bare metal is the only way to go.
Here at work we were
On 25.11.2013 22:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM. That
bare metal is the only way to go.
Here at work we were entertaining the idea of running our Postgres databas
On 26/11/13 09:01, Lee Nguyen wrote:
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM.
That bare metal is the only way to go.
Here at work we were entertaining the idea of running our Postgres
datab
Hi,
Having attended a few PGCons, I've always heard the remark from a few
presenters and attendees that Postgres shouldn't be run inside a VM. That
bare metal is the only way to go.
Here at work we were entertaining the idea of running our Postgres database
on our VM farm alongside our applicatio
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