Polling servers/services

I have seen some posts about polling services - and have some dumb
questions!
First off - how do such polling services get started (what 'calls' them, and
when), how is the first service run started after tpsvrinit?
Does the service run many times, and if so, what starts the subsequent
'runs' of the service? Or is one run kicked off, and then kept running
forever and a day - and if so, how is the server ever shutdown, and
tpsvrdone executed?
I am interested in answers that do and do not involve multithreading.
Thanks for any info.
Simon

Thanks for that - it clears up some grey areas I was unsure of (i.e. tpacall
from svrinit, and then to itself).
. . . and I suspect I am pushing it - but is there anyway of getting the
code of a running service to check to see if the server has a pending
shutdown message from the BBL, without actually ending the service
(tpreturn) and starting it again (via the tpacall mechanism you answered
with)? i.e. the service can run ad infinitum ('sleep, check, do work' cycle)
and only tpreturn, to allow thye server to shut, when it detects the pending
request.
Thanks again
Simon
"Anthony Fryer" <[email protected]> wrote in message
news:[email protected]...
>
I just posted about a threaded polling server but will try to summarizethe different
ways I have seen of implementing a polling server. I have over time done3 different
implementations...
1) tpacall polling server -
The job is contained in a tuxedo service contained within the tuxedoserver
and is invoked by doing a tpacall with the TPNOREPLY flag. The servicename has
to be unique across all server instances (ie. if you start up multipleinstances
of the server, each one has to advertise a unique name for the jobservice. One
way is to use the PID to create a service name and dynamically advertiseit in
tpsvrinit). The job is invoked at the end of tpsvrinit by doing atpacall, then
at the end of the job, it must also perform a tpacall to itself. Youshould also
do a sleep within the job service, just before the tpacall incase the jobdoes
nothing, to prevent the server going into a continuous tpacall loop.After the
tpacall, the job service then does a tpreturn. The server can be shutdownjust
after the tpreturn is called and before the server starts the nextiteration of
the job (ie. After tpreturn and before the next message is taken off theIPC queue
to start the next job ). So you just do a normal tpshutdown, and it willshutdown
when the currently executing job has finished. No threading involved.
2) Alarm based polling server -
The job is contained in a function, NOT a tuxedo service. In tpsvrinit,you
set an alarm signal handler function (sigset), and then at the end oftpsvrinit
you set the alarm for a specified interval in seconds (alarm). tpsvrinitexits
and then after the interval, the alarm goes off and the signal handlerfunction
is invoked which is the job function. The job executes, and at the end ofthe
job, the alarm is reset again using the alarm function. This signal basedpolling
server is easy to do and uses no threads. There are drawbacks though.Any code
could reset or disable the alarm signal and consequently stop the serverfrom
polling (including code in 3rd party libraries). The server can beshutdown anytime
the job is not executing, but be aware the alarm could go off while youare in
the tpshutdown method which would then cause the job to execute again.
3) Threaded Polling Server -
In tpsvrinit you lock a global mutex and then spawn a thread for eachjob function
you have in the server before releasing the mutex. These thread functionscontain
an infinite loop that aquires a lock on the global mutex, performs therequired
job, releases the mutex and sleeps for an interval. You can shutdown theserver
at ANY time because the main thread is never doing anything. Intpsvrdone, you
aquire a lock on the global mutex to make sure that any currentlyexecuting jobs
are completed before shutdown, and then destroy the threads and the mutex.This
is my preferred method of implementing a polling tuxedo server.
Anthony
"Simon McDonald" <[email protected]> wrote:
I have seen some posts about polling services - and have some dumb
questions!
First off - how do such polling services get started (what 'calls' them,
and
when), how is the first service run started after tpsvrinit?
Does the service run many times, and if so, what starts the subsequent
'runs' of the service? Or is one run kicked off, and then kept running
forever and a day - and if so, how is the server ever shutdown, and
tpsvrdone executed?
I am interested in answers that do and do not involve multithreading.
Thanks for any info.
Simon

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Hi,
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Hi there,
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Regards,
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Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread

SQL 2012 Management Studio Remote Servers Service Status Slow/Stops Working

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Polling web service problem

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Any idea why polling blocks.
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MSCS H/A enqueue, replication and message servers services

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Mike,
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Migratable Servers & Services

Hey everyone...
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Hi
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[SOLVED]Multiple servers/services with only one machine

Hello,
First of all, thank you for taking time to read this post.
Long story short: I had a machine laying around so i decided i would use it as a router/wireless access point since my isp router isn't working so well, but since the machine is not working anymore, and i don't have the resources(a.k.a. money) to fix it, i decided to use my main machine instead and make my laptop my main machine.
I have been reading the arch wiki regarding how to make a router and a wireless access point, but then i remembered something, what if i decide i need another server(http/https, ftp, NAS, IRC) which i might want, could i use virtualbox?
So my question is: can i have my computer with arch serving as a router + wireless access point and on the same machine, virtual machines with arch running other services? If i kept the files from this servers, like the www folder, of ftp folder, on the host machine would this be a security risk? This not intended for a enterprise environment, only here at home.
Thank you.
Last edited by jantonio2992 (2013-12-03 17:12:24)

ewaller wrote:
jantonio2992 wrote:Ok, so i can run everything in this machine. Can i still use this machine as a main machine (using virtual machines to test apps and its configs)? Or that might make me break the system?
That would depend on the traffic If it is just for you or your LAN, probably not a problem (unless you are streaming video to a bunch of machines). <Sarcasm>OTOH, unlike others, you might want try to run an entire national health care sign-up site on it * </Sarcasm>
* Note ... I have no concept as to the real architecture of the Affordable Health Care Act web site.
Edit: Too slow.
Sorry i didn't see you answer befores i posted my last. It would be only for my Lan, only serve i would run to the Internet would be SSH.. And no streaming video

Need function which delivers a list of all servers/services/bapis/functions

Hey experts - I had a question in the SOA-forum and I was adviced to search for help in here!
I hope someone of you can help me with my problems - here my original Thread from the SOA forum
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No cross posting
Read the "Rules of Engagement"
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Changing Domain Administrator Password : How can I find out what all servers / services are currently using this?

Good morning all,
I took over as IT director for the school district in my town about 2 years ago, and we've had some techs come and go, all of which have had the domain administrator password (not my call, but my fault for not changing it by now). I am about to change
it, but before doing so I want to know how I can make sure what all this will break so I can quickly change the cached/saved password on whatever supporting services use this user/pass.
Can anyone help here?
Thank you!

Hello,
In my point of view if I were in this situation I would Change the domain administrator password. By
Resetting the domain administrators all the services which use domain administrator as their logon user, will lose their functionality. I had this experience and I did change the domain administrator password with no problem. However do not
forget to have a account lockout tool or script for locating the place where the account was locked out.
But to keep it short most of the time. lockout problems are arise from mapped drives, credential manager and saved RDP sessions and etc.
Regards.
Mahdi Tehrani |
|
www.mahditehrani.ir
Please click on Propose As Answer or to mark this post as
and helpful for other people.
This posting is provided AS-IS with no warranties, and confers no rights.
How to query members of 'Local Administrators' group in all computers?

Permanent SSL connection in background (own poll/push service)

Hello
I’m new here and I will first say hello! I'm 46 years old and I am from Germany. I work as an software developer since 1993 and I know, my English isn't the best ;-)!
Now to my questions:
I have written a client Server application which is a secure and real time (< 5 sec) alert system. At the moment the clients can be a PC (Windows, Linux or Mac) or an Android Smartphone.
The App’s have all a permanent SSL connection to the server.
So, if one client send an alert, the server can send this alert to all specified clients which are online.
Also the server can send alerts to specified client, if the count of online clients is under a specified number.
So my customers have a very high security, that in case of a fault, very fast enough employers received the alert!
Now it is on me, to create an I-Phone APP witch work as a client on this system.
I read now many documents, how can I set up a permanent SSL connection in the I-Phone APP as a background task and if I understand it right, than this is not possible.
For that functionality the Apple push service is normally used, but in case of my application there is a problem, because an Apple push notification has no guaranty about the running time.
As far as I read multitasking background function are not for network activity’s (without the APS)
Have someone an idea how can I solve my problem?
Thanks Aki

Hi etresoft,
thanks again, I'm happy that I found here so fast help.
Have you any link to a dokument, how does IOS support keep alive in a multitasking background task, I didn't find anything (maybe I searche with the wrong words)?
The main reason, why I can't use the Apple push notification service is, that then my server dosen't know, who is online and receiveable!
The second is, that I can't start die APP direct, when the IPhone is in look modus (in Android the APP has is own look screen and speak the mesage after the alert sound!).
And the third, that I dosen't know (have a garrenty), how long the message need to be displayed on the phone.
That this application drain battery is clear! On Android it is tolerable (round about 10% more or instead of 30h, 27h battery live time on my device).
For my customer 20h battery livetime, will be enought, because the divices are recharged every night.
Regards Aki

Increases number of JMS consumers in an OSB jms-polling proxy service

Hi All,
I'm looking for an option of increasing the number of JMS consumers in a JMS OSB proxy service. I know that this is possible by modifying the ejb, but I'm looking for any other option by using weblogic/proxy configuration. When I monitor the queue I have a number of 16 message consumers, but I would need to increse it to a higher number in order to improve the performance.
Please send me any suggestion o advice to solve it.
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Sorry I sent it to the wrong place. I have moved it to Weblogic

Branch Office will not host Microsoft services/servers - Sites and Subnets

Hi,
The scenario is the following:
1 Domain. Windows 2012 R2.
6 sites. 1 DC per site. 3 subnets per site.
5 sitelinks.
The sites diagram is the following:
The branch office "SITE04" will not host any Microsoft service/server/PC. Network routing/flow scheme will not change (branch office SITE04 reamins routing traffic to/from SITE05 and SITE06).
The questions are:
Does the existing SITE04 subnets must be deleted?
Does the existing SITE04 site must be deleted?
Does the existing SITE04-SITE05 and SITE04-SITE06 site links must be deleted?
if yes to any of the above questions?
How to redesign the subnets/sites/site links?
Thanks in advance!

Thanks MrX for your response.
The SITE04 branch office will not host Microsoft-based PCs/Servers/Services. SITE04 will be used for network traffic routing purposes and will host servers from another platform.
Why to mantain SITE04 subnets?
Thanks in advance!
In this case, maintaining the subnets would be optional.
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
My Linkedin Profile
My MVP Profile

Is it possible to view individual SSL-proxy service usage (TPS)?

Hi,
Can the ACE provide any detail above and beyond just the overall ssl-connection rate for a particular context?
I have an ACE with two contexts and multiple ssl-proxy services configured within each and it would be really helpful to know the ssl-connection rate associated with each service (current, average, peak, etc) as I've got the issue where the SSL resource limit for one of the contexts has been reached and I don't know which service has jumped up in usage;-
Allocation
Resource Current Peak Min Max Denied
ssl-connections rate 0 250 250 250 351
I can set up custom MIB pollers based on OID values within our SolarWinds network monitoring system so even if the information isn't directly available through the ACE CLI but has an associated OID I'd be grateful for the info if any one knows it (or even just the OIDs that contain the connection rate values from the 'sh resource usage' command so I can graph the overall usage against date/time within SolarWinds).
Thanks
Matthew

Matthew,
I do not know the OID to poll the service-policy info.
But if you do a 'show service-policy ' at regular interval and compare the hitcon, you can compute the connection rate for each service policy individually.
Gilles.

Polling servers/services

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