search for: thread_pooling

Hi, Newbie here. I''ve got a worker (for generating PDF reports) that uses the "thread_pool" to allow processing multiple reports simultaneously and queue up any requests that exceed the thread pool (pool_size = 10 currently). def process_pdf(user) thread_pool.defer(user) do |user| makepdf(user) end end My question is: I use a mutex to handle

I have a previous question regarding long tasks and the thread_pool (sorry for the dup, I didn''t see the first go through). To try and track things down, I made a change based on a suggestion found in the archives. I moved my import contacts worker to its own file and set the pool_size to 1. class ImportContactsWorker < BackgrounDRb::MetaWorker set_worker_name

I''m trying to run a single worker that could perform a periodic task for a given user. >From a controller, I imagine something like: def start_job MiddleMan.ask_work(:worker => :foo_worker, :worker_method => :perform_task, :data => { :user_id = current_user.id }) end def check_job @status = MiddleMan.ask_status(:worker => :foo_worker)[current_user.id] end

Within a threaded worker, I would like to have multiple methods. Will the following code work? def method_1(args) thread_pool.defer(args) do |args| #work end end def method_2(args) thread_pool.defer(args) do |args| #work end end . . . or, should I have one "meta"-method and pass which sub-method to perform via args? def meta_method(args)

Hi list, I''m having some issues getting backgroundrb to play nice with more than one mongrel. When I run my app on a single mongrel instance it works fine. I have two different problems show up in my backgrounrb_server.log. The top of the backtrace is shown here: 20070130-12:03:03 (92473) failed to find slave socket - (RuntimeError) 20070130-12:03:03 (92473)

Hi everyone, I''ve a class that try to spawn two workers, every 5 seconds. The code is something like: while true do MiddleMan.new_worker(:class => :researches_worker,:job_key => :researches) MiddleMan.new_worker(:class => :products_worker,:job_key => :products) sleep(5) end I''m using ":job_key", so if a worker hasn''t already ended its work

After some initial stumblings, I think I''ve got the hang of backgroundrb. It''s great! I''d been thinking for many many months how cool something like this would be! I''m trying to make a "job queue". That is, a pool of worker threads monitor a queue. When a job appears, one of the workers grabs it and executes the task. When complete, the worker

I have a job that I am starting from a Rails controller in production mode using MiddleMan: MiddleMan.new_worker(:class => :import_ccg_category_worker, :args => { :category_id => @category.id, :remote_category_id => params[:remote_category_id], :description => "Importing CCG products for #{@ category.name}" }) Both of the category ID variables are just basic integers. I

for some strange reason this error occours when i create one worker from another BUT only when i derive worker class from Worker::Base instead or Worker::RailsBase - when change it back it works fine, child worker can have empty do_work, but this error still ocours Bad file descriptor (Errno::EBADF) /var/lib/gems/1.8/gems/slave-1.2.0/lib/slave.rb:214:in `for_fd''

I use backgroundrb for many long tasks in my system, but I''m having issues with one in particular. Two large tasks for me are importing people and updating companies. def import_contacts(args = nil) thread_pool.defer(args) do |job_id| begin job = ImportJob.find(job_id) job.process_job rescue => err logger.error "MscWorker#import_contacts

My Rails site uses BackgroundDRb and I have a couple of questions: 1. Can someone point me to some sample code/examples for how to use thread_pool? The website doc says to add a line ====== pool_size 10 ====== in my Worker class which seems straightforward. I wasn''t able to understand this part though: ========= thread_pool.defer(wiki_scrap_url) { |wiki_url| scrap_wikipedia(wiki_url) }

Forgive me if this has been addressed somewhere, but I have searched and can''t come up with anything. I am basically trying to distribute several web page scraping tasks among different threads, and have the results from each added to an Array which is ultimately returned by the backgroundrb worker. Here is an example of what I''m trying to do in a worker method: pages =

I''m struggling to keep backgroundrb v2 running for more than 24 hours. It appears to be running fine for a while, then tries to fire off a worker (exactly the same worker it''s been running for the past few hours), and it suddenly dies. I haven''t found any pattern for the cause of this. In backgroundrb_server.log, the final entry is this : 20070206-10:41:45

Greetings all, Unit tests are passing, but I''m having mucho problems getting brb to run without exceptions for more than 6 hours. I''m seeing a mixture of the following 2 exceptions: 20070605-11:26:56 (21497) failed to find slave socket - (RuntimeError) 20070605-11:26:56 (21497) /usr/local/lib/ruby/gems/1.8/gems/ slave-1.2.1/lib/slave.rb:435:in `initialize''

Hey, I''ve got a problem where my worker is not being properly executed.... it used to work in an earlier version of brb, but i realized my vendor/plugins was out of whack, upgraded to the newer schedule- oriented release (0.2.1). I can start brb, and run the new_worker middleman, but ntohing happens. When putting brb in ''run'' mode, i see this: undefined method

Hi Folks, Well, Yesterday I pushed some more updates that I was cooking since last couple of days. Here is a brief list: 1. Results from worker stays even after a worker dies. 2. You can ask backgroundrb to store status objects in memcache cluster now. by default its stored in master process memory, but I have introduced an option to allow it to be stored in a memcache cluster:

I recently switched over to v1.0, and things are rolling along pretty well. However, one thing that has always been a little confusing to me is knowing when to use thread_pool. Since most of my bgrb workers are called from my web app to process rather than being scheduled, I''m using the thread_pool for every call. Unfortunately, that means that I have to split up workers by how many

Hi All, I''m using Backgroundrb as a general purpose long-running-task back-end (upload processing, email sending, etc), and it''s been a great solution. However I''ve recently run into some some intermittent connection issues that have me baffled. I''m running on apache2/fcgid and the problem occurs in both devlopment and production mode. The problem seems to

I have a question on how multiple b/g processes that are kicked off get handled in terms of sequence/schedule. On my site, a user enters an RSS feed to be processed and since this takes about 5-10 secs, I pass the process off to a background job and meanwhile do some Ajaxy spinners and tap-dancing until the job completes and then redirect_to the appropriate page. This works great. I also need to

I have a scheduled worker that runs every minute, checking for new eBay auctions to post. If it finds an auction, then it posts it. If there are no auctions in the database that are queued up, it simply does nothing. I got the worker to finally run as a scheduled worker, every minute. However, after about 30-45 scheduled runs, it simply stops running. My backgroundrb_schedules.yml file: ------