Hi Fellas, I just thought of something that is a bit of a long shot but here goes...
"some kind of reverse DNS request" - are you perhaps using a DNS SRV service type within your app that you may not be aware of and the DNS server isn't configured correctly? Look here for reference: http://www.dns-sd.org/ServiceTypes.html For example, in a voip system with SRV lookups enabled, if the DNS server hasn't got _sip_ set properly, it takes a dns-timeout for a phone call to be placed. You'll notice sip is one of the services in the list referred to. The DNS timeout could be a few seconds, but when you're expecting a phone call to start straight away, those few seconds are noticeable....same thing here maybe. Just a guess. have a good weekend, Chris On Fri, Jul 30, 2010 at 9:10 PM, Joachim Van der Auwera <joac...@progs.be>wrote: > I my case I was using wireshark to figure out the problem. > My application was intermittently waiting for a couple of seconds. I > noticed some kind of reverse DNS request being sent which was being waited > for. This was on Windows and some systems suffered more from this problem > than others (some OS version etc). Very weird. > > Hope this helps you, > > Kind regards, > Joachim > > > On 07/27/2010 02:49 AM, cleverpig wrote: > >> Oh,thanks Joachim ! >> >> Seem like your strange problem,my product hosts were deployed in >> internal network. >> And my development host at internet.Maybe we are in the same trouble. >> How can I find where is the problem? and how to work out? >> Please figure out. >> >> On Tue, Jul 27, 2010 at 4:16 AM, Joachim Van der Auwera >> <joac...@progs.be> wrote: >> >> >>> What environment are you using? >>> >>> I have once seen similar kind of strange problems which were caused by >>> the >>> OS trying to do reverse DNS lookups on db accesses which were using >>> direct >>> IP addresses (and no hostname defined for them). >>> >>> Joachim >>> >>> >>> On 07/23/2010 05:33 PM, cleverpig wrote: >>> >>> >>>> yes,of course.but there is nothing,I had changed tow host,the problem >>>> keeps. >>>> >>>> On Fri, Jul 23, 2010 at 8:50 PM, Thiago H. de Paula Figueiredo >>>> <thiag...@gmail.com> wrote: >>>> >>>> >>>> >>>>> On Fri, 23 Jul 2010 04:38:15 -0300, cleverpig<greatclever...@gmail.com >>>>> > >>>>> wrote: >>>>> >>>>> >>>>> >>>>> >>>>>> In dev environment,everything is okay. >>>>>> But in product environment,T5 takes 14~15 second almostly to handle >>>>>> one page request! >>>>>> >>>>>> >>>>>> >>>>> Have you checked if the bottleneck is elsewhere? In the database access >>>>> or a >>>>> server with other high CPU or I/O apps, for example? I never had this >>>>> problem. >>>>> >>>>> -- >>>>> Thiago H. de Paula Figueiredo >>>>> Independent Java, Apache Tapestry 5 and Hibernate consultant, >>>>> developer, >>>>> and >>>>> instructor >>>>> Owner, Ars Machina Tecnologia da Informação Ltda. >>>>> http://www.arsmachina.com.br >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>>>> For additional commands, e-mail: users-h...@tapestry.apache.org >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> >>> >>> -- >>> Joachim Van der Auwera >>> PROGS bvba, progs.be >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>> For additional commands, e-mail: users-h...@tapestry.apache.org >>> >>> >>> >>> >> >> >> >> > > > -- > Joachim Van der Auwera > PROGS bvba, progs.be > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > >
