Displaying 20 results from an estimated 1000 matches similar to: "Sequence of multiple background process submissions"
2008 May 30
5
Upper limit to number of jobs queued by BDRb?
I use BDRb to process RSS feeds for users on my site (http://feedflix.com).
I have a batch job that queries the DB for records that haven''t been updated
in the last so many hours and kicks off a background job for each of them.
If N records are returned by the DB, N background jobs gets queued and get
done serially. As long as N is 255 or under, everything works like a charm.
2008 May 20
1
Couple questions on BDRb and concurrent processing
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) }
2008 Feb 01
3
Job Queue
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
2008 Mar 09
13
Using the ip flag
Hey All,
I am looking for an example of the proper config settings for background rb to run my rails app and my backgroundrb instance on separate machines (or more precisely, to have a rails cluster with one backgroundrb machine). Does anyone have such examples?
Thanks!
-Noah
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2007 Dec 19
6
thread_pooling sleeping
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
2007 Feb 22
1
failed to find slave socket - (RuntimeError)
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
2008 Jan 13
3
right usage of bdrb
Hi,
i''m going to implement a syndication-service, which will get lists in
xml with some meta-data an enclosed video files, which will get encoded
at the end. The syndication run will be startet every five minutes of
a full hour.
So i thought to build 4 Worker. One for checking which feeds to
syndicate (syndication_worker) at a specific time, one for processing
the list
2008 May 17
1
Can someone help with this error?
Hello all,
I get this intermittent error saying OpenURI::HTTPError. At the bottom of
the email is what is reported in my backgroundrb_server_<port>.log file. The
process_netflix_reviews method is parsing (in the background) Netflix''s RSS
feeds. This error also pretty much brings down the BDRb process and to
recover, I am forced to do a
./script/backgroundrb stop
2008 Jan 22
2
Threadpool and queuing of tasks
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
2006 May 03
6
New Release: One-Click Ruby Installer 1.8.4-17 release candidate 2
We are almost there to a final release. The uninstall issues have been
fixed, and a few packages have been upgraded to more recent versions. Many
thanks to Ryan Leavengood and Shahank Date who stepped in to help finish off
this release!
*** Only "show-stopper" problems will be fixed ***
We are extreme short of manpower at the moment. So as much as I would like
to address each and every
2008 May 09
1
register_status for excess thread_pool?
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
2008 Jul 05
2
Question on number of processes engendered by BDRb
I have two workers (ie two files in my RAILS_ROOT/lib/workers directory) on
my Rails app. When I run a top on my box, I see *three* processes called
packer_worker_r. Shouldn''t I just be having two? What is the third process
for?
Here is an extract of the output from my top command. The PIDs are 7084,
7085 and 7083.
============================================
PID USER PR NI VIRT
2008 Feb 03
1
Defer multiple methods within the same worker to the thread pool?
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)
2008 Jan 03
1
Thread_pool bug?
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
2006 Jan 07
2
VB on Linux with Wine
We have 50 complex applications written in Microsoft Visual Basic 6.0
providing banking solutions. We are seriously thinking of porting
our applications to Linux under WINE. Is it possible to do so?
Nature of our VB applications:
------------------------------
1. Extensively used all controls provided in VB
2. Total size of our applications is around 2 million lines
3. Applications are having
2007 Dec 17
11
BackgrounDRb release 1.0 available now
Hi Folks,
I am glad to announce 1.0 release of BackgrounDRb.
This would be a major release since 0.2 release of BackgrounDRb.
Here is a brief summary of changes:
- BackgrounDRb is DRb no longer. It makes use of EventDriven network
programming library packet ( http://packet.googlecode.com ).
- Since we moved to packet, many nasty thread issues, result hash
corruption issues are totally
2007 Aug 08
3
Cannot start workers in production mode
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
2007 Dec 10
21
BackgrounDRb 1.0 pre-release available now
Hi Folks,
We are glad to announce shiny new release of BackgrounDRb, which will
soon become 1.0.
A quick summary of changes:
- BackgrounDRb is no londer DRb, its based on event driven network
programming library packet ( http://www.packet.googlecode.com ) .
- Since we moved to packet, many nasty thread issues, result hash
corruption issues are totally gone. Lots of work has went in
making
2007 Jun 06
2
struggling with stability
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''
2008 Jun 10
4
adding results from threads to a collection and returning it
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 =