Did not understand this part about CouchDB

["Yves S. Garret" <yo...@gmail.com>]

Hello, I was reading about CouchDB here:
http://guide.couchdb.org/editions/1/en/why.html

The sentence is just above Figure 2 (which is roughly 2/3 of the way
down the page).  What I don't understand is why would concurrency
be impacted when latency is reduced?  Wouldn't latency reduce as
more processes are created to do more processing?

Or was this meant as a function of increased bandwith usage, as
reads/writes increase, the latency is increased, yes?

Re: Did not understand this part about CouchDB

["Yves S. Garret" <yo...@gmail.com>]

On Sun, Jul 14, 2013 at 6:20 AM, Robert Newson <rn...@apache.org> wrote:

> Yves,
>
> Did you see Adam's reply to your original copy of this request on our
> erlang@ mailing list? It's best not to cross-post for this reason.
>
> B
>
>
> On 14 July 2013 00:08, Yves S. Garret <yo...@gmail.com> wrote:
> > On Sat, Jul 13, 2013 at 5:08 PM, Jens Alfke <je...@couchbase.com> wrote:
> >
> >>
> >> On Jul 13, 2013, at 12:17 PM, Yves S. Garret <
> yoursurrogategod@gmail.com>
> >> wrote:
> >>
> >> > The sentence is just above Figure 2 (which is roughly 2/3 of the way
> >> > down the page).  What I don't understand is why would concurrency
> >> > be impacted when latency is reduced?  Wouldn't latency reduce as
> >> > more processes are created to do more processing?
> >>
> >> Well, it only says concurrency is “affected”, it doesn’t say in which
> >> direction.
> >>
> >> To be honest, I don’t understand those graphs or the accompanying
> >> sentences at all. I can’t tell which axes are dependent on which, or
> even
> >> whether they’re supposed to be two- or three-dimensional.
> >>
> >> —Jens
> >
> >
> > *shrug*
> >
> > The comment about bandwidth was the only thing that I came up with.
>

Hi, yes I do.  This was my mistake, I meant to post this to the couchdb
mailing list and accidentally sent it to the erlang one.

Re: Did not understand this part about CouchDB

[Robert Newson <rn...@apache.org>]

Yves,

Did you see Adam's reply to your original copy of this request on our
erlang@ mailing list? It's best not to cross-post for this reason.

B


On 14 July 2013 00:08, Yves S. Garret <yo...@gmail.com> wrote:
> On Sat, Jul 13, 2013 at 5:08 PM, Jens Alfke <je...@couchbase.com> wrote:
>
>>
>> On Jul 13, 2013, at 12:17 PM, Yves S. Garret <yo...@gmail.com>
>> wrote:
>>
>> > The sentence is just above Figure 2 (which is roughly 2/3 of the way
>> > down the page).  What I don't understand is why would concurrency
>> > be impacted when latency is reduced?  Wouldn't latency reduce as
>> > more processes are created to do more processing?
>>
>> Well, it only says concurrency is “affected”, it doesn’t say in which
>> direction.
>>
>> To be honest, I don’t understand those graphs or the accompanying
>> sentences at all. I can’t tell which axes are dependent on which, or even
>> whether they’re supposed to be two- or three-dimensional.
>>
>> —Jens
>
>
> *shrug*
>
> The comment about bandwidth was the only thing that I came up with.

Re: Did not understand this part about CouchDB

["Yves S. Garret" <yo...@gmail.com>]

On Sat, Jul 13, 2013 at 5:08 PM, Jens Alfke <je...@couchbase.com> wrote:

>
> On Jul 13, 2013, at 12:17 PM, Yves S. Garret <yo...@gmail.com>
> wrote:
>
> > The sentence is just above Figure 2 (which is roughly 2/3 of the way
> > down the page).  What I don't understand is why would concurrency
> > be impacted when latency is reduced?  Wouldn't latency reduce as
> > more processes are created to do more processing?
>
> Well, it only says concurrency is “affected”, it doesn’t say in which
> direction.
>
> To be honest, I don’t understand those graphs or the accompanying
> sentences at all. I can’t tell which axes are dependent on which, or even
> whether they’re supposed to be two- or three-dimensional.
>
> —Jens


*shrug*

The comment about bandwidth was the only thing that I came up with.

Re: Did not understand this part about CouchDB

[Jens Alfke <je...@couchbase.com>]

On Jul 13, 2013, at 12:17 PM, Yves S. Garret <yo...@gmail.com> wrote:

> The sentence is just above Figure 2 (which is roughly 2/3 of the way
> down the page).  What I don't understand is why would concurrency
> be impacted when latency is reduced?  Wouldn't latency reduce as
> more processes are created to do more processing?

Well, it only says concurrency is “affected”, it doesn’t say in which direction.

To be honest, I don’t understand those graphs or the accompanying sentences at all. I can’t tell which axes are dependent on which, or even whether they’re supposed to be two- or three-dimensional.

—Jens