> > > I'm not a networking guru, (and this is sort of OT for > Tomcat) but I'm not > convinced by M.Schwartz's response that this is due solely to DNS name > resolution. I don't think that would account for such a big > difference in > time--once the name was resolved to the IP address, behavior > should be the same, > no? > > Saravanan, you say there's a 20x difference but what's the > magnitude? Are we > talking 10 ms vs. 200 ms. or 1 second vs 20 seconds? By "IP > address" do you mean > "127.0.0.1" or the IP address of the computer?
If it takes about 10 seconds when using the IP address/hostname, then it takes more than 5 minutes when using localhost/127.0.0.1 By IP address I mean the Network IP address of the machine, not 127.0.0.1 > > My pet theory is that the TCP/IP stack is recognizing the IP > address as being of > the local box and is "shortcutting" packets from transmit > queues to receive > queues in memory, without actually getting the NIC involved > or anything. Or > maybe the NIC is doing this. > > Many years ago when I did hardware testing, we first ran into > TCP/IP stacks that > had this optimization. > > The other thought is that for some reason different maximum > packet sizes are > being used with these different connections? > > Of course, this is just a theory. Someone with a little more > knowledge might be > able to speak more authoritatively <grin>. > > dwh > > > Saravanan Bellan wrote: > > > Windows 2000 > > Tomcat 3.2.3 > > > > If I try to upload a file using the regular HTML/HTTP, > there is a 20x > > difference in performance > > between using localhost vs the IP address in the Web Server > URL. Ofcourse > > I'm running the browser > > on the same machine where tomcat is installed. Using > localhost is 20 times > > slower than using IP address. > > > > Doesnt make a difference if I use Apache/AJP/Tomcat or > Direct to Tomcat web > > server. > > > > Can somebody throw some light on this. > > > > Thanks, > > > > -- > > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > > > -- > To unsubscribe, e-mail: > <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: > <mailto:[EMAIL PROTECTED]> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
