[Seaside] TTFB, Apache, Seaside Performance Problem
jtuchel at objektfabrik.de
jtuchel at objektfabrik.de
Thu Jan 5 12:29:16 UTC 2017
Interesting. I mean, 1 second????
Am 05.01.17 um 13:10 schrieb Sabine Manaa:
> http://stackoverflow.com/questions/25199405/localhost-vs-127-0-0-1-performance
>
> 2017-01-05 13:24 GMT+01:00 Sabine Manaa <[hidden email]
> </user/SendEmail.jtp?type=node&node=4928847&i=0>>:
>
> Mariano, no, there is no difference in the response time between
> localhost and 127.0.0.1
> I entered now the ip of the server there.
>
> Don't you think that this should be written in the book?
> http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache
> <http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache>
>
>
>
> 2017-01-05 12:58 GMT+01:00 Mariano Martinez Peck [via Smalltalk]
> <[hidden email] </user/SendEmail.jtp?type=node&node=4928847&i=1>>:
>
> Wow, that's what I call to nail it! hahahaha.
>
> Norbert, do you have some explanation we could all learn from
> it? It's something concrete about Apache or is it something as
> general as resolving localhost could take longer than 127.0.0.1?
>
> Sabine, do you see a difference in the response time when
> ping to localhost and 127.0.0.1 ?
>
> Thanks in advance,
>
> On Thu, Jan 5, 2017 at 8:47 AM, Sabine Manaa <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=4928845&i=0>> wrote:
>
> The problem is solved: I had to replace localhost by
> 127.0.0.1
> Thanks a lot Norbert Hartl for your advice!
>
> 2017-01-05 12:25 GMT+01:00 Sabine Manaa [via Smalltalk]
> <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=4928844&i=0>>:
>
> Hi,
>
> I need the help of the community.
>
> I am not succeding in making our app faster.
> The problem is the Time to first Byte (TTFB). It is
> always more than one second which is much to much.
> We reduced the problem to a problem between apache and
> pharo/seaside.
>
> For this, I have a test application which only renders
> "hello World". So I am sure it is not my code, my
> database, my css, my js, my ssl.... :-)
>
> I optimized and learned a lot for my app, but it did
> not solve the TTFB problem, which costs 1 additional
> sec for each click of the user which is inaceptable.
>
> Please follow this tests to see the problem:
>
> ===>>> Test 1: test.html without Pharo/seaside
> https://tools.keycdn.com/performance?url=http://app.spesenfuchs.de/test.html
> <https://tools.keycdn.com/performance?url=http://app.spesenfuchs.de/test.html>
> TTFB in Frankfurt below 10 ms -> this proves that the
> server and configuration is fast.
>
> ===>>> Test 2: hello world, simple seaside page
> https://tools.keycdn.com/performance?url=app.spesenfuchs.de/hello
> <https://tools.keycdn.com/performance?url=app.spesenfuchs.de/hello>
> TTFB in Frankfurt more than 1 second! -> this proves
> that it is not my application :-) it is only a hello
> world seaside page...
>
> ===>>> Test 3: my login page
> https://tools.keycdn.com/performance?url=app.spesenfuchs.de/rka
> <https://tools.keycdn.com/performance?url=app.spesenfuchs.de/rka>
> TTFB in Frankfurt more than 1 second!
>
> (alternative: enter the urls into https://gtmetrix.com/)
>
> In Apache, we enabled tracing of the rewrite and this
> tells me (i assume), that apache makes the rewrite
> very fast, within the same millisecond :-)
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace2]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> init rewrite engine with requested uri /hello
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace3]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> applying pattern '^/rka(.*)$' to uri '/hello'
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace3]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> applying pattern '^/hello(.*)$' to uri '/hello'
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace2]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> rewrite '/hello' ->
> 'http://localhost:8085/HelloWorld/'
> <http://localhost:8085/HelloWorld/%27>
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace2]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> forcing proxy-throughput with
> http://localhost:8085/HelloWorld/
> <http://localhost:8085/HelloWorld/>
> [Thu Jan 05 12:14:35.243400 2017] [rewrite:trace1]
> [pid 1288:tid 1692] mod_rewrite.c(477): [client
> 91.89.219.232:52272 <http://91.89.219.232:52272>]
> 91.89.219.232 - -
> [app.spesenfuchs.de/sid#66c848][rid#20bc4c8/initial
> <http://app.spesenfuchs.de/sid#66c848][rid%2320bc4c8/initial>]
> go-ahead with proxy request
> proxy:http://localhost:8085/HelloWorld/
> <http://localhost:8085/HelloWorld/> [OK]
>
> So, I assume that there is problem between Apache and
> Seaside....
>
> My questiond are:
> what can I do to find the bottleneck?
> what is the reason that is so slow?
> your help is very appreciated because I have run out
> of ideas what it could be and I was investigating it
> several days now.
>
> Concerning the system:
> The server is at Amazon ec2 windows Server 2009 R2 SP1
> The Apache version is 2.4.23
> The configuration of the apache is like this (as
> described in the seaside book
> http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache
> <http://book.seaside.st/book/advanced/deployment/deployment-apache/configure-apache>)
>
>
> <VirtualHost *:80>
> ProxyPreserveHost On
> ServerName app.spesenfuchs.de
> <http://app.spesenfuchs.de>
> RewriteEngine On
> <Directory "C:\xampp\htdocs">
> Require all granted
> </Directory>
> DocumentRoot "C:\xampp\htdocs"
> RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
>
> RewriteRule ^/rka(.*)$
> http://localhost:8085/RKA/$1 [proxy,last]
> RewriteRule ^/hello(.*)$
> http://localhost:8085/HelloWorld/$1
> <http://localhost:8085/HelloWorld/$1> [proxy,last]
> </VirtualHost>
>
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> Performance Problem
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> --
> Mariano
> http://marianopeck.wordpress.com
> <http://marianopeck.wordpress.com>
>
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