asp.net - Proof that Web Gardens do not fly well with InProc Sessions -


i tinkering web gardens in asp.net iis 6.0. multiple sources (source1 source2) explain how inproc session not fly web gardens. built program prove it, results difficult explain. please me explain results of testing.

test
set maximum # of worker processes 1000 in iis. create web app stores string in session , retrieves value button click. run web app in ie, ff, , blackberry browsers.

result
ie: pulls session properly. session failed after letting website sit idle ~3 minutes.
ff: session never failed. after sitting ~15 minutes session failed.
bb: regularly fails. ratio inline source2 says. greater # of worker processes in garden, more session fails.

my interpretation
ff/ie/desktop browsers have more memory may allows better caching.

notes
setting ie check newer versions of page on every visit has no effect. noticed postbacks blackberry pretty guaranteed create new instance of w3wp.exe, whereas mem usage increased same w3wp.exe process postbacks ie/ff.

the fact browsers have more memory shouldn't have inproc sessions , webgardens server side components.

you see more issues increase number of worker processes because more number of worker processes less request handled same worker process when comes back. in other words if have 1 worker process have 1 in 1 chance go same worker process on second request; if have 2 worker processes have 1 in 2 chances, if have 3 worker process have 1 in 3 chances, , on.

i wonder why trying use inproc sessions, though. there no reason can vanish easily. see article http://www.west-wind.com/weblog/posts/1986.aspx


Comments

Post a Comment

Popular posts from this blog

Add email recipient to all new Trac tickets -

is there configuration change can made trac send notification email address upon creation of new tickets? if can't done through config, plugin second best option, source code modification last resort. note: setting smtp_always_cc in notification section of tracini send messages on updates. i'm in need of email notifications only on creation of new ticket. does have email notification? 1 option have create query list ten (or many) recently-created tickets. when looking @ results of query, use "rss feed" button @ bottom of page subscribe feed notify whenever results of query updated.
Read more

400 Bad Request on Apache/PHP AddHandler wrapper -

i'm trying create wrapper/handler called on apache server whenever requests php script inside of directory. way can authorize users entire directory or write other stuff called when directory called. this best configuration i've been able come with... <directory "/srv/http/innov/public_html"> options -indexes allowoverride order allow,deny allow directoryindex index.php </directory> then in /srv/http/innov/public_html/kb/ have .htaccess file... options -indexes addhandler auth_handler .php action auth_handler ../auth_handler.php then in /srv/http/innov/public_html/kb/auth_handler.php follows... <?php $file = $_server['path_translated']; echo $file; ?> access log: - - [02/dec/2010:17:43:15 -0500] "get /kb/index.php http/1.1" 400 590 error log: [thu dec 02 17:50:19 2010] [error] [client xxx.xxx.xxx.xxx] invalid uri in request /kb/ http/1.1 i've checked browser , seems making proper request...
Read more

php - Change action and image src url's with jQuery -

i parsing form 1 of sites using php proxy. working fine form action , img src of submit button url's relative. how can prepend full http//www.domain.com/ in front of each of url's in form? edit: here's form code once fed through new domain: <div style="display: none;" id="subscribeform" class="newform"> <h5>subscribe our newsletter</h5> <form action="/campaignprocess.aspx?listid=27057" method="post" onsubmit="return checkwholeform93426(this)" name="catemaillistform93426"> <div class="form"> <div class="item"> <label for="clfullname">full name</label> <br /> <input type="text" maxlength="255" id="clfullname" name="fullname" class="cat_textbox_small" st...
Read more