To be honest, I really don't know what's going on, but I would try
commenting out the image_tag. First of all, it is probably causing another
trip to the DB per user. Second, I don't know how heavy the images are, but
using height and width may be hiding the fact that they're big, and you're
just using html to scale them down on your view. Do you see similar results
when completely removing the images on that _user partial?
On Mon, Apr 6, 2009 at 5:10 PM, Avishai <avishai.we...@gmail.com> wrote:
>
> When I leave the params off and just go for a straight index, I'm
> still seeing this:
>
> Processing UsersController#index [GET]
> Parameters: {"action"=>"index", "controller"=>"users"}
> User Load (5.6ms) SELECT * FROM `users` ORDER BY users.created_at
> DESC LIMIT 0, 10
> SQL (0.4ms) SELECT count(*) AS count_all FROM `users`
> Rendering template within layouts/application
> Rendering users/index
> Rendered users/_user (432.4ms)
> Rendered users/_user (133.4ms)
> Rendered users/_user (96.1ms)
> Rendered users/_user (202.4ms)
> Rendered users/_user (26.1ms)
> Rendered users/_user (55.6ms)
> Rendered users/_user (51.3ms)
> Rendered users/_user (21.8ms)
> Rendered users/_user (38.3ms)
> Rendered users/_user (47.9ms)
> User Load (9.3ms) SELECT * FROM `users` WHERE (`users`.`id` = 1)
> LIMIT 1
> Rendered users/_search (67.1ms)
> SQL (3.8ms) SELECT count(*) AS count_all FROM `messages` WHERE
> (`messages`.receiver_id = 1 AND (`messages`.`read` = 0))
> Rendered users/_user_bar (134.7ms)
> Completed in 1861ms (View: 1534, DB: 19)
>
> I had thought that it had something had to do with the size of the
> about_me as mentioned before, but I checked again, and some of those
> long-rendering user partials had no content for the about_me field...
>
> Any other ideas as to why this could be taking so long to render?
>
> Thanks a lot
>
> Avishai
>
> On Apr 6, 2:55 pm, Avishai <avishai.we...@gmail.com> wrote:
> > I tried a bunch of different searches, and it's actually loading
> > reasonably quickly still... < 500ms at least.
> >
> > Also, in the process I upgraded from Rails 2.2.1 to 2.3.2, so maybe
> > that helped somewhat too.
> >
> > -Avishai
> >
> > On Apr 6, 2:13 pm, Harold A. Giménez Ch. <harold.gime...@gmail.com>
> > wrote:
> >
> > > This is good to know.
> > > "Completed in 319ms (View: 288, DB: 27)"
> > > 319ms is not hardly close to your original 11386ms.
> >
> > > I notice that your params below do not have any of the "search"
> criteria
> > > ([:user][:interests], etc). If you run the view using the criteria,
> does
> > > performance degrade?
> >
> > > On Mon, Apr 6, 2009 at 1:50 PM, Avishai <avishai.we...@gmail.com>
> wrote:
> >
> > > > Fred, I took your suggestion to up the log level and this is what it
> > > > reveals:
> >
> > > > Processing UsersController#index [GET]
> > > > Parameters: {"action"=>"index", "controller"=>"users", "page"=>"11"}
> > > > User Load (26.0ms) SELECT * FROM `users` ORDER BY users.created_at
> > > > DESC LIMIT 100, 10
> > > > SQL (0.2ms) SELECT count(*) AS count_all FROM `users`
> > > > Rendering template within layouts/application
> > > > Rendering users/index
> > > > Rendered users/_user (3.7ms)
> > > > Rendered users/_user (2.9ms)
> > > > Rendered users/_user (3.1ms)
> > > > Rendered users/_user (42.6ms)
> > > > Rendered users/_user (39.6ms)
> > > > Rendered users/_user (121.2ms)
> > > > Rendered users/_user (32.9ms)
> > > > Rendered users/_user (4.9ms)
> > > > Rendered users/_user (14.7ms)
> > > > Rendered users/_user (2.7ms)
> > > > User Load (0.2ms) SELECT * FROM `users` WHERE (`users`.`id` = 1)
> > > > LIMIT 1
> > > > Rendered users/_search (3.0ms)
> > > > Rendered users/_user_bar (2.1ms)
> > > > Completed in 319ms (View: 288, DB: 27)
> >
> > > > However, once I hit refresh a bunch of times, all those partials drop
> > > > to only a few ms each. Including the ones that show as 40, 120, etc
> > > > above. Those long ones all had text in the about_me....
> >
> > > > -Avishai
> >
> > > > On Apr 6, 1:37 pm, Avishai <avishai.we...@gmail.com> wrote:
> > > > > Interesting. Maybe something is going on in the controller. I've
> tried
> > > > > running the resulting SQL queries directly, and they still seem to
> be
> > > > > fetching pretty quickly...
> >
> > > > > The controller contains a lot of conditionals, maybe that's the
> issue?
> > > > > I've used Newrelic RPM to analyze my SQL, and it looks like for
> > > > > everything there's no USING FILESYSTEM, so indexes are set up
> > > > > properly... The about_me column is a regular freetext column (TEXT
> i
> > > > > think), so the length varies anywhere from zero to a few paragraphs
> of
> > > > > text. The photos are handled with paperclip, but are just URLs, not
> > > > > the actual files in the DB. Could it still be a bandwidth still be
> an
> > > > > issue DB => webserver if they're on the same box?
> >
> > > > > Controller code is at the end here:http://gist.github.com/90786
> >
> > > > > Cheers,
> >
> > > > > Avishai
> >
> > > > > On Apr 6, 12:50 pm, Harold <harold.gime...@gmail.com> wrote:
> >
> > > > > > I can't find anything fundamentally wrong on your views, but we
> > > > > > haven't seen any controller and model code.
> >
> > > > > > Try benchmarking/profiling your app to find out exactly what the
> > > > > > bottleneck is. Seehttp://
> > > > guides.rubyonrails.org/performance_testing.html
> >
> > > > > > A good start may be your DB. What RDMS are you using? Do you have
> > > > > > proper indexes?
> > > > > > Have you tried running the SQL directly (pick it up from the
> logs) and
> > > > > > finding out if it's a problem with Rails at all?
> > > > > > How big is the user.about_me column be? If it's huge you may be
> > > > > > hitting a bandwidth bottleneck (DB => web server).
> >
> > > > > > Not much more occurs to me at this point, but hope that points
> you on
> > > > > > the right direction.
> >
> > > > > > On Apr 6, 11:14 am, Avishai <avishai.we...@gmail.com> wrote:
> >
> > > > > > > Hi,
> >
> > > > > > > I've been experiencing some severe slowness in rendering the
> views in
> > > > > > > my users/index action. It's really not doing anything fancy at
> all,
> > > > > > > and has been driving me nuts the last few days. I'm running
> Rails
> > > > > > > 2.2... does anyone have any idea how to resolve this? Look at
> home
> > > > > > > much time is being consumed by the view. Obviously those
> response
> > > > > > > times are unacceptable, and this is with 3 instances of Thin
> running
> > > > > > > in production on a VPS...
> >
> > > > > > > #production.log
> > > > > > > Rendering users/index
> > > > > > > Completed in 11386ms (View: 8693, DB: 151)
> >
> > > > > > > Rendering users/index
> > > > > > > Completed in 5024ms (View: 3286, DB: 16)
> >
> > > > > > > Rendering users/index
> > > > > > > Completed in 11692ms (View: 8811, DB: 105
> >
> > > > > > > Rendering users/index
> > > > > > > Completed in 11184ms (View: 8116, DB: 364)
> >
> > > > > > > Rendering sessions/new
> > > > > > > Completed in 1696ms (View: 1012, DB: 0)
> >
> > > > > > > Rendering users/index
> > > > > > > Completed in 8361ms (View: 6898, DB: 107)
> >
> > > > > > > #users/index.html.erb
> > > > > > > <div>
> > > > > > > <h2>Users</h2>
> > > > > > > <%= render :partial => "users/user", :collection =>
> @users
> > > > %>
> > > > > > > <%= will_paginate @users %>
> > > > > > > <% if @users.empty? -%>
> > > > > > > <p class="infobox">Looks like we couldn't find
> > > > > > > anything matching your search. Maybe you should consider
> broadening
> > > > it?
> > > > > > > </p>
> > > > > > > <% end -%>
> > > > > > > </div>
> >
> > > > > > > #_user.html.erb
> > > > > > > <% div_for user do %>
> > > > > > > <h2><%= link_to(image_tag(user.photo.url(:small), :alt
> =>
> > > > > > > user.login, :height => 130, :width => 130, :class =>
> > > > "profile-photo"),
> > > > > > > user) %><%= link_to(user.login, user) %></h2>
> > > > > > > <p class="user-location"><%= user.age %> / <%= user.sex
> %> /
> > > > <
> > > > > > > %= user.city %>, <%= user.state %></p>
> > > > > > > <p class="user-summary"><%=
> truncate_words(user.about_me ||
> > > > > > > "", 80) -%></p>
> > > > > > > <% end %>
> >
> > > > > > > The template code is here too:http://gist.github.com/90786
> >
> > > > > > > Any ideas?
> >
> > > > > > > Thanks!
> >
> > > > > > > Avishai
> >
>
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