On Thu, Aug 4, 2011 at 8:56 AM, Sam Crawford <[email protected]> wrote: > No, that would be a bad idea. MaxTotal should be >= MaxPerRoute. In > your case it should be at least double it. > > If you have two VIPs and wish to evenly balance load between them > (with at most 100 concurrent connections per VIP), then you'd use: > > cm.setMaxTotal(200); > cm.setDefaultMaxPerRoute(100);
thanks I think I get it now. > > Thanks, > > Sam > > > > On 4 August 2011 16:50, Mohit Anchlia <[email protected]> wrote: >> On Thu, Aug 4, 2011 at 8:29 AM, Sam Crawford <[email protected]> wrote: >>> No. What you've done with cm.setMaxTotal(100) is set 100 maximum >>> connections across the entire connection manager. So, with that alone, >>> you could only reach 100 concurrent connections if you were hitting at >>> least 50 unique hosts. >>> >>> If you want 100 connections to a single host and you were only making >>> connections to that one host, then you could use something simple like >>> this: >>> >>> cm.setMaxTotal(100); >>> cm.setDefaultMaxPerRoute(100); >> >> Thanks! so if I have 2 unique VIP that I use in HttpGet/Post etc. for >> shared HttpClient then I use cm.setMaxTotal(2) and >> cm.setDefaultMaxPerRoute(100); >>> >>> Thanks, >>> >>> Sam >>> >>> On 4 August 2011 16:18, Mohit Anchlia <[email protected]> wrote: >>>> On Thu, Aug 4, 2011 at 7:05 AM, Sam Crawford <[email protected]> wrote: >>>>> Forgive the poor wording - I meant to say "The HTTP/1.1 RFC says you >>>>> should make _at most_ 2 connections per target host". >>>>> >>>> Sorry I am little confused. In my example I thought I was creating 100 >>>> connections to a particular host by setting setMaxTotal to 100. >>>>> >>>>> On 4 August 2011 15:03, Sam Crawford <[email protected]> wrote: >>>>>> Yes, absolutely. The HTTP/1.1 RFC says you should make 2 connections >>>>>> per host, and HttpClient obeys that strictly out-of-the-box (side >>>>>> note: web browsers do not anymore). >>>>>> >>>>>> A 'route' in HttpClient is typically defined as protocol (HTTP/HTTPS) >>>>>> + host + port. I see there are some additional options in 4.1.x for >>>>>> tunneling, but the three I listed will be the primary ones. >>>>>> >>>>>> See section 2.8.4 in >>>>>> http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html. >>>>>> You'll want to change either the default max per route or the max for >>>>>> an individual route. >>>>>> >>>>>> Hope this helps, >>>>>> >>>>>> Sam >>>>>> >>>>>> >>>>>> On 4 August 2011 14:55, KARR, DAVID (ATTSI) <[email protected]> wrote: >>>>>>>> -----Original Message----- >>>>>>>> From: Russell Brown [mailto:[email protected]] >>>>>>>> Sent: Thursday, August 04, 2011 12:04 AM >>>>>>>> To: HttpClient User Discussion >>>>>>>> Subject: Re: Using ThreadSafeClientConnManager >>>>>>>> >>>>>>>> On 4 Aug 2011, at 01:18, Mohit Anchlia wrote: >>>>>>>> >>>>>>>> > I am trying to understand these 2: >>>>>>>> > >>>>>>>> > ClientConnectionManager cm = new ThreadSafeClientConnManager(); >>>>>>>> > cm.setMaxTotal(100); >>>>>>>> > HttpClient httpClient = new DefaultHttpClient(cm); >>>>>>>> > >>>>>>>> > Have couple of questions: >>>>>>>> > >>>>>>>> > 1) Can one httpClient object be shared accross multiple threads doing >>>>>>>> > post/get/delete/put requests? >>>>>>>> >>>>>>>> Yes. >>>>>>>> >>>>>>>> > 2) What happens in above case if there are more concurrent threads >>>>>>>> say >>>>>>>> > 200 than actual no. of connections? So what happens if 200 threads >>>>>>>> > trying to use httpClient object (shared). But we created only 100 >>>>>>>> > connections. Does it wait on .execute if all connections are busy? >>>>>>>> >>>>>>>> The thread attempting to acquire a connection blocks. If you have set a >>>>>>>> timeout then it blocks until the timeout is reached and an exception is >>>>>>>> thrown. >>>>>>>> >>>>>>>> Worth noting, in your above snippet the max connections per route will >>>>>>>> only be *2*. >>>>>>> >>>>>>> Sorry to the OP to hijack this question, but I'd like to understand a >>>>>>> little more about this. Is a "route" defined as the path to a >>>>>>> particular host? If all of my connections go to the same host, and >>>>>>> I'll have numerous threads trying to make that connection, do I need to >>>>>>> change some default to allow more than 2 connections per "route"? >>>>>>> >>>>>>>> > Can somone please help me understand? >>>>>>>> > >>>>>>>> > --------------------------------------------------------------------- >>>>>>>> > To unsubscribe, e-mail: [email protected] >>>>>>>> > For additional commands, e-mail: [email protected] >>>>>>>> > >>>>>>>> >>>>>>>> >>>>>>>> --------------------------------------------------------------------- >>>>>>>> To unsubscribe, e-mail: [email protected] >>>>>>>> For additional commands, e-mail: [email protected] >>>>>>> >>>>>>> >>>>>>> --------------------------------------------------------------------- >>>>>>> To unsubscribe, e-mail: [email protected] >>>>>>> For additional commands, e-mail: [email protected] >>>>>>> >>>>>>> >>>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: [email protected] >>>>> For additional commands, e-mail: [email protected] >>>>> >>>>> >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: [email protected] >>>> For additional commands, e-mail: [email protected] >>>> >>>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [email protected] >>> For additional commands, e-mail: [email protected] >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
