Re: tomcat6, bottleneck, concurrent requests, windows xp
Hi, Michael !
I suppose Connection Times (ms) table section actually describes
individual requests? And Percentage of the requests served within a certain
time (ms) as well?
For me it seems that concurrency is hardly working at all, but threads are
blocked (or waiting) somewhere outside of doGet Servlet's method, cause
doGet performance doesn't not differ to that extend (although there is some
waiting issues inside obviously)
I made 3 new measurements for different concurrency levels (100, 10, 1)
Servlet's doGet overall method execution time is counted this way
static long overall
doGet(request, response)
{
long start = System.currentTimeMillis();
// here goes logic
…
//synchronized{
overall += System.currentTimeMillis() - start;
}
}
Concurrency = 100
===
ab.exe - n 100 -c 100 {address}
ab.exe execution time=7.641 seconds
overall doGet servlet execution =8067
===
Concurrency Level: 100
Time taken for tests: 8.234 seconds
Complete requests: 100
Failed requests:0
Write errors: 0
Total transferred: 2770200 bytes
HTML transferred: 2742700 bytes
Requests per second:12.14 [#/sec] (mean)
Time per request: 8234.375 [ms] (mean)
Time per request: 82.344 [ms] (mean, across all concurrent requests)
Transfer rate: 328.53 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 16 70 33.3 63 172
Processing: 500 4097 2098.4 41417719
Waiting: 141 3700 2115.9 37197344
Total:547 4168 2097.3 42667734
Percentage of the requests served within a certain time (ms)
50% 4266
66% 5344
75% 5984
80% 6344
90% 7109
95% 7500
98% 7672
99% 7734
100% 7734 (longest request)
Concurrency = 10
===
ab.exe - n 100 -c 10 {address}
ab.exe execution time=8.094 seconds
overall doGet servlet execution =7206
===
Concurrency Level: 10
Time taken for tests: 8.094 seconds
Complete requests: 100
Failed requests:0
Write errors: 0
Total transferred: 2770200 bytes
HTML transferred: 2742700 bytes
Requests per second:12.36 [#/sec] (mean)
Time per request: 809.375 [ms] (mean)
Time per request: 80.938 [ms] (mean, across all concurrent requests)
Transfer rate: 334.24 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 31 75 29.0 78 141
Processing: 172 695 149.0734 891
Waiting: 109 344 143.7328 719
Total:250 770 156.38131000
Percentage of the requests served within a certain time (ms)
50%813
66%828
75%844
80%875
90%922
95%953
98% 1000
99% 1000
100% 1000 (longest request)
Concurrency = 1
===
ab.exe - n 100 -c 1 {address}
ab.exe execution time=10.578 seconds
overall doGet servlet execution=4672
===
Concurrency Level: 1
Time taken for tests: 10.578 seconds
Complete requests: 100
Failed requests:0
Write errors: 0
Total transferred: 2770200 bytes
HTML transferred: 2742700 bytes
Requests per second:9.45 [#/sec] (mean)
Time per request: 105.781 [ms] (mean)
Time per request: 105.781 [ms] (mean, across all concurrent requests)
Transfer rate: 255.74 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 16 24 8.1 31 47
Processing:63 81 8.8 78 109
Waiting: 63 67 7.6 63 94
Total: 94 105 9.0109 125
Percentage of the requests served within a certain time (ms)
50%109
66%109
75%109
80%109
90%109
95%125
98%125
99%125
100%125 (longest request)
Michael Ludwig-6 wrote:
kazukin6 schrieb am 13.12.2008 um 18:15:33 (-0800):
1) there is maxThreads=100 in context.xml
2) sending 100 simultaneous requests to one servlet, for example ab.exe
-n
100 -c 100 {address}
3) in the servlet's own log for performance it shows around only 200-500
ms
per request
4) in the ab.exe log it shows around 7 seconds(!) per request
It doesn't, at least not in the log you're showing here.
full log of ab.exe is
Concurrency Level: 100
Time taken for tests: 16.656 seconds
That's the time taken altogether.
Complete requests: 100
Failed requests:0
Write errors: 0
Everything fine.
Total transferred: 2770200 bytes
tomcat6, bottleneck, concurrent requests, windows xp
-
1) there is maxThreads=100 in context.xml
2) sending 100 simultaneous requests to one servlet, for example ab.exe -n
100 -c 100 {address}
3) in the servlet's own log for performance it shows around only 200-500 ms
per request
4) in the ab.exe log it shows around 7 seconds(!) per request
-
So the question is- is it a some sort of socket level bottleneck?
In JProfiler there is no thread locks shown.
How to resolve it?
full log of ab.exe is
Concurrency Level: 100
Time taken for tests: 16.656 seconds
Complete requests: 100
Failed requests:0
Write errors: 0
Total transferred: 2770200 bytes
HTML transferred: 2742700 bytes
Requests per second:6.00 [#/sec] (mean)
Time per request: 16656.250 [ms] (mean)
Time per request: 166.563 [ms] (mean, across all concurrent requests)
Transfer rate: 162.42 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 31 146 208.01091922
Processing: 1328 8015 4329.2 7797 16250
Waiting: 578 7109 4323.0 6734 15281
Total: 1438 8161 4350.1 7875 16281
Percentage of the requests served within a certain time (ms)
50% 7875
66% 9969
75% 10969
80% 11609
90% 15547
95% 16141
98% 16219
99% 16281
100% 16281 (longest request)
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Re: Question is answered. See Bill Barker-2 answer (update)
Hi Chris! They can upload them using javascript file manager Totally rejecting scripting seems to be more robust solution Christopher Schultz-2 wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Kazukin, kazukin6 wrote: And yes, for us it' not possible to give users to change only parts of jsp's and deny execution of these parts based on some credential assessments executed during some if checkAccess tags How do your users submit updated JSP files? Do you have the opportunity to scan them before installation? If so, why not simply reject anything containing [EMAIL PROTECTED]? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkjQJV4ACgkQ9CaO5/Lv0PCNOACgu+CaPCGqYX+0t1jhPJhDRZ/K b88An1s5lPVnO1xiU2WiBljlYbTC+tZd =AN9/ -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/Disable-java-code-execution-%3C-blabla-%3E-in-jsp%2C-but-permits-tags-tp19415053p19527565.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Disable java code execution %blabla% in jsp, but permits tags
We want them to be able to customize information they get from our system by using custom tags H. Hall wrote: kazukin6 wrote: Plz Help !! Is it possible to disable all java code execution within jsp page (by security manager or something) but allow custom tags to be executed? The problem is that the users can change jsp files, and due to security reasons we can allow them to use only tags Why are users allowed to change jsp files? HH -- H. Hall ReedyRiver Group LLC http://www.reedyriver.com - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/Disable-java-code-execution-%3C-blabla-%3E-in-jsp%2C-but-permits-tags-tp19415053p19471795.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Question is answered. See Bill Barker-2 answer
Hi, Martin
Thanks for the answer
I see, what you mean, but the problem is slightly different
The matter is that our users can change jsp files whatever they like via
administrative interface, so we want to restrict the use of scriplets in
these jsp's because of possible abuses
Bill Barker-2 provided the comprehensive answer to this problem
mgainty wrote:
use ths struts if tag to conditionally disable the code
%@ taglib prefix=s uri=/struts-tags%
s:if test=%{false}
divWill Not Be Executed/div
/s:if
http://struts.apache.org/2.0.11.2/docs/if.html
datorită struts
Martin
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Date: Sat, 13 Sep 2008 08:58:59 -0700
From: [EMAIL PROTECTED]
To: users@tomcat.apache.org
Subject: Re: Disable java code execution %blabla% in jsp, but permits
tags
We want them to be able to customize information they get from our system
by
using custom tags
H. Hall wrote:
kazukin6 wrote:
Plz Help !!
Is it possible to disable all java code execution within jsp page (by
security manager or something)
but allow custom tags to be executed?
The problem is that the users can change jsp files, and due to
security
reasons we can allow them to use only tags
Why are users allowed to change jsp files?
HH
--
H. Hall
ReedyRiver Group LLC
http://www.reedyriver.com
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RE: Question is answered. See Bill Barker-2 answer
Martin, thanks for a guide! I took a look at the Jetspeed (and portlet
specifications too) and it seems pretty intresting. I'll definetely study
it. The only thing that scares me that spec-s
(http://www.jcp.org/aboutJava/communityprocess/review/jsr168/) wasnt
updated since 2003
And yes, you really got it. Our system indeed is a portal and CMS and
something else too. And it somehow resembles the functions the Portal API
has. At this moment we're developing CRM part based on it. We already have a
whole bunch of portal functionality (it doesnt have any XML config cause
it's highly dynamic and config is stored in DB) and very specific security
system, tuned to our specific features, and at this point I'm not sure we'll
be able to seamlessly integrate any second-party solution into this
architecture.
mgainty wrote:
that was a 30 second solution amongst 100 different solutionsBR
so maybe you want to categorise the jsps and then enable / disable
view/update/delete of the resourcesBR in those categories depending on
the authenticated credentials of the userBR
for this scenario you might want to look at portals and or
content-management systemsBR
i would start hereBR
http://portals.apache.org/jetspeed-1/fusion.htmlBR
MartinBR
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Date: Sat, 13 Sep 2008 17:32:29 -0700
From: [EMAIL PROTECTED]
To: users@tomcat.apache.org
Subject: Question is answered. See Bill Barker-2 answer
Hi, Martin
Thanks for the answer
I see, what you mean, but the problem is slightly different
The matter is that our users can change jsp files whatever they like via
administrative interface, so we want to restrict the use of scriplets in
these jsp's because of possible abuses
Bill Barker-2 provided the comprehensive answer to this problem
mgainty wrote:
use ths struts if tag to conditionally disable the code
%@ taglib prefix=s uri=/struts-tags%
s:if test=%{false}
divWill Not Be Executed/div
/s:if
http://struts.apache.org/2.0.11.2/docs/if.html
datorită struts
Martin
__
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this transmission.
Date: Sat, 13 Sep 2008 08:58:59 -0700
From: [EMAIL PROTECTED]
To: users@tomcat.apache.org
Subject: Re: Disable java code execution %blabla% in jsp, but
permits
tags
We want them to be able to customize information they get from our
system
by
using custom tags
H. Hall wrote:
kazukin6 wrote:
Plz Help !!
Is it possible to disable all java code execution within jsp page
(by
security manager or something)
but allow custom tags to be executed?
The problem is that the users can change jsp files, and due to
security
reasons we can allow them to use only tags
Why are users allowed to change jsp files?
HH
--
H. Hall
ReedyRiver Group LLC
http://www.reedyriver.com
-
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RE: Question is answered. See Bill Barker-2 answer (update)
And yes, for us it' not possible to give users to change only parts of jsp's
and deny execution of these parts based on some credential assessments
executed during some if checkAccess tags
kazukin6 wrote:
Martin, thanks for a guide! I took a look at the Jetspeed (and portlet
specifications too) and it seems pretty intresting. I'll definetely study
it. The only thing that scares me that spec-s
(http://www.jcp.org/aboutJava/communityprocess/review/jsr168/) wasnt
updated since 2003
And yes, you really got it. Our system indeed is a portal and CMS and
something else too. And it somehow resembles the functions the Portal API
has. At this moment we're developing CRM part based on it. We already have
a whole bunch of portal functionality (it doesnt have any XML config cause
it's highly dynamic and config is stored in DB) and very specific security
system, tuned to our specific features, and at this point I'm not sure
we'll be able to seamlessly integrate any second-party solution into this
architecture.
mgainty wrote:
that was a 30 second solution amongst 100 different solutionsBR
so maybe you want to categorise the jsps and then enable / disable
view/update/delete of the resourcesBR in those categories depending on
the authenticated credentials of the userBR
for this scenario you might want to look at portals and or
content-management systemsBR
i would start hereBR
http://portals.apache.org/jetspeed-1/fusion.htmlBR
MartinBR
__ BR
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Everything in this e-mail and any attachments relates to the official
business of Sender. This transmission is of a confidential nature and
Sender does not endorse distribution to any party other than intended
recipient. Sender does not necessarily endorse content contained within
this transmission.
Date: Sat, 13 Sep 2008 17:32:29 -0700
From: [EMAIL PROTECTED]
To: users@tomcat.apache.org
Subject: Question is answered. See Bill Barker-2 answer
Hi, Martin
Thanks for the answer
I see, what you mean, but the problem is slightly different
The matter is that our users can change jsp files whatever they like via
administrative interface, so we want to restrict the use of scriplets in
these jsp's because of possible abuses
Bill Barker-2 provided the comprehensive answer to this problem
mgainty wrote:
use ths struts if tag to conditionally disable the code
%@ taglib prefix=s uri=/struts-tags%
s:if test=%{false}
divWill Not Be Executed/div
/s:if
http://struts.apache.org/2.0.11.2/docs/if.html
datorită struts
Martin
__
Disclaimer and confidentiality note
Everything in this e-mail and any attachments relates to the official
business of Sender. This transmission is of a confidential nature and
Sender does not endorse distribution to any party other than intended
recipient. Sender does not necessarily endorse content contained
within
this transmission.
Date: Sat, 13 Sep 2008 08:58:59 -0700
From: [EMAIL PROTECTED]
To: users@tomcat.apache.org
Subject: Re: Disable java code execution %blabla% in jsp, but
permits
tags
We want them to be able to customize information they get from our
system
by
using custom tags
H. Hall wrote:
kazukin6 wrote:
Plz Help !!
Is it possible to disable all java code execution within jsp page
(by
security manager or something)
but allow custom tags to be executed?
The problem is that the users can change jsp files, and due to
security
reasons we can allow them to use only tags
Why are users allowed to change jsp files?
HH
--
H. Hall
ReedyRiver Group LLC
http://www.reedyriver.com
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Re: Disable java code execution %blabla% in jsp, but permits tags
Hi, Bill!! Thank you a lot!! It seems, it's exactly what I need Bill Barker-2 wrote: kazukin6 [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Plz Help !! Is it possible to disable all java code execution within jsp page (by security manager or something) but allow custom tags to be executed? There isn't anything that can't be worked around. But putting: jsp-config jsp-property-group url-pattern*.jsp/url-pattern scripting-invalidtrue/scripting-invalid /jsp-property-group /jsp-config in $CATALINA_HOME/conf/web.xml means that you can prove that they went out of their way to break the rules. This is section 3.3.3 of the JSP-2.1 spec. If they put the corresponding fragment in their webapp's web.xml but with scripting-invalidfalse/scripting-invalid then Tomcat will allow scripting (user web.xml overrides global web.xml). Also, since it is a translation-time error, it won't work if they deploy pre-compiled JSP pages. Using a SecurityManager just limits what they can do (e.g. % System.exit(0); % throws an exception). The problem is that the users can change jsp files, and due to security reasons we can allow them to use only tags -- View this message in context: http://www.nabble.com/Disable-java-code-execution-%3C-blabla-%3E-in-jsp%2C-but-permits-tags-tp19415053p19415053.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/Disable-java-code-execution-%3C-blabla-%3E-in-jsp%2C-but-permits-tags-tp19415053p19433882.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Disable java code execution %blabla% in jsp, but permits tags
Hi Juha!
Yes, I did, but it's kinda hard for me to estimate all possible threats and
the Tomcat's ability to provide the defence
I suppose it should be
1) No thread creation
2) No IO operations
3) No any direct System API invokations, only JAVA API -(cause it can lead
to undesired consequences), and what about changing some crutial standard
java properties, like system encoding?
4) No any fake operations to load the processor, like while(true){do
something useless}
5) -?
2) and maybe 3) are implementable, I suppose, but I'm not sure about 1) 4)
and 5)
Juha Laiho wrote:
kazukin6 wrote:
Is it possible to disable all java code execution within jsp page (by
security manager or something)
but allow custom tags to be executed?
The problem is that the users can change jsp files, and due to security
reasons we can allow them to use only tags
Unfortunately I don't have an idea on how to prevent Java snippets
in JSPs, but have you considered whether using Java security manager
would be enough to defend you against the estimated threats?
--
..Juha
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Disable java code execution %blabla% in jsp, but permits tags
Plz Help !! Is it possible to disable all java code execution within jsp page (by security manager or something) but allow custom tags to be executed? The problem is that the users can change jsp files, and due to security reasons we can allow them to use only tags -- View this message in context: http://www.nabble.com/Disable-java-code-execution-%3C-blabla-%3E-in-jsp%2C-but-permits-tags-tp19415053p19415053.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat6 map subdomain to particular directory under web root
server.xml Host name=localhost appBase=webapps unpackWARs=true autoDeploy=true xmlValidation=false xmlNamespaceAware=false Aliasw1.localhost/Alias /Host Using alias w1.localhost maps subdomain to web root directory Is there any trick to map w1.localhost to localhost/w1 directory? -- View this message in context: http://www.nabble.com/Tomcat6-map-subdomain-to-particular-directory-under-web-root-tp18531402p18531402.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat6 map subdomain to particular directory under web root
Caldarale, Charles R wrote: You can use Tuckey's URL rewrite filter (http://tuckey.org/urlrewrite/) or you could use virtual hosts: instead of the Alias, define a second Host with an appBase pointing to the desired directory. - Chuck Chuck, thanks a lot! 1) I didnt manage to get the second host working, tomcat just won't find any pages/resources and returns empty pages. Adding context element Context path= docBase=\ROOT\w1 reloadable=true/ seems to fix that problem, but in this case it looks like it's working in separate context (none of the java classes from WEB-INF/classes can be used) 2) Tuckey's URL rewrite does work! But I'm not sure about performance overheads, compared to using Apache WebServer with Virtual Hosts. For those who concern, here is the sample rule (from urlrewrite.xml) rule note subdomains redirect /note condition name=w1.localhost operator=equal type=server-namew1.localhost/condition condition name=admin operator=notequal type=request-uri/admin/(.*)/condition condition name=w1 cyclic redirection operator=notequal type=request-uri/w1/(.*)/condition from^/(.*)/from to/w1/$1/to /rule -- View this message in context: http://www.nabble.com/Tomcat6-map-subdomain-to-particular-directory-under-web-root-tp18531402p18536559.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
