Development and localhost

Rails
1

I’m not sure if the subject line is aptly named however I’ve noticed
something for some time.
It seems if I’ve been away from the app for a while, it takes
fffffffffoooooooooorrrrrever to load a page again or refresh.
I’ve noticed this both with Webrick and Mongrel. Once I’m back again,
doing
things response time is fine. Wondering why there is such a long lag
time.
Something in the server perhaps ?

Stuart

–

2

On Oct 14, 1:16 pm, “Dark A.” [email protected] wrote:

–Dark ambient - Wikipedia
Others have noticed similar behavior. In fact, several people have
been discussing this in the raleigh-rb mailing list.

To quote Ryan Daigle on this one…
“So it appears that the solution is to make your app wildly successful
to avoid any prolonged periods of inactivity…”

The exact cause of this is unknown (to me anyway), but it has been
suggested that either the ruby interpreter is being swapped in from
virtual memory or that the entire virtual OS is.

By any chance is your app on a shared host?

_Kevin

3

On 10/14/06, _Kevin [email protected] wrote:

virtual memory or that the entire virtual OS is.

By any chance is your app on a shared host?

No it’s not in production yet or on any other server. Just running
server

on my machine. And although it probably doesn’t mean anything I installed
everything using InstantRails. My app however is on edgerails and defaults
to Mongrel.

Anyway, interesting information Kevin since it sounds like this goes
beyond
just a local issue. Curious to know if it’s ever come up on this list
before or not and if Rails-core has addressed this issue at all ?
Right now the lag time is significant - I’d say it’s minutes, 4-5 + ,
which
would be a really bad thing in production.

Stuart

4

On 10/14/06, _Kevin [email protected] wrote:

been discussing this in the raleigh-rb mailing list.
yet or on any other server. Just running server
which
_Kevin
Ruby.exe was the big winner rising form 30,000K in mem usage to
217,920
when the page finally refereshed.
Not sure if this is normal. My laptop isn’t the most powerful so that
might
be part of the problem

Stuart

5

On Oct 14, 2:12 pm, “Dark A.” [email protected] wrote:

before or not and if Rails-core has addressed this issue at all ?
Right now the lag time is significant - I’d say it’s minutes, 4-5 + , which
would be a really bad thing in production.

Stuart

Sounds like you have other issues. The lag times I have heard
discussed are on the order of several seconds, I think.

It might be interesting to have the task manager open when you do this
again and then note which processes are eating up all the CPU cycles.

_Kevin

6

On Oct 14, 6:25 pm, “Dark A.” [email protected] wrote:

been discussing this in the raleigh-rb mailing list.
yet or on any other server. Just running server
which
_KevinRuby.exe was the big winner rising form 30,000K in mem usage to 217,920
when the page finally refereshed.
Not sure if this is normal. My laptop isn’t the most powerful so that might
be part of the problem

Stuart

I’d wager that that is fairly unusual. Not sure what would cause it
tho…

_Kevin

7

On Oct 14, 7:12 pm, “Dark A.” [email protected] wrote:

On 10/14/06, _Kevin [email protected] wrote:

The exact cause of this is unknown (to me anyway), but it has been
everything using InstantRails. My app however is on edgerails and
would be a really bad thing in production.
usage to 217,920
_KevinKevin , are you saying that Ruby is taking too much memory ? I have the
task manager open and it’s staying in that range.

Stuart

On my machine (an Intel Mac), my ruby process only uses about 35MB +
about 65MB of virtual memory. Not sure how well you can compare a PC
to a Mac in terms of memory usage, but I can’t imagine that it would be
normal to go from 30MB to 200+ in a single call. Unless you are doing
something like creating an entire table worth of objects in a single
call.

_Kevin

8

On 10/14/06, _Kevin [email protected] wrote:

to avoid any prolonged periods of inactivity…"
on my machine. And although it probably doesn’t mean anything I
,

tho…

_Kevin

Kevin , are you saying that Ruby is taking too much memory ? I have the
task manager open and it’s staying in that range.

Stuart