Hi Everyone,
I'm running a Rails site on Mongrel and I can't figure out why a
particular type of request ties up Mongrel easily. The requests that
tie up Mongrel call an XML-RPC server like so:
# In the controller
def site_start
if params[:id]
@site = Site.find(params[:id])
@site.site_start
render :json=>{:success=>true}
end
end
# In the model
def site_start
RpcTask.manage(self, 'start')
end
# In RpcTask
def manage(site, task)
run('manage_task', {
:site => site.name,
:site_id => site.id,
:task => task
})
end
# which calls
def run(task, task_params = {})
begin
server = XMLRPC::Client.new2('http://localhost:9192/')
result = server.call_async(task,task_params)
return result
rescue XMLRPC::FaultException => err
logger = ActiveRecord::Base.logger
logger.error(err.faultCode)
logger.error(err.faultString)
logger.error(result)
end
false
end
If I call the model method directly from the console, the RPC side
responds very quickly:
>> start = Time.now; Site.first.site_start; (Time.now - start).to_s
=> "0.493253"
Removing the body of RpcTask.run results in comparable performance.
Also, by switching from a single mongrel to a four-mongrel cluster, I
was able to get the these actions to perform acceptably but I imagine
that I'm doing something very wrong here to require so much power. Any
ideas?
Thanks,
Thomas Allen
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