Just on a side-note, might there be some work-around for this issue, by
throttling the rate at which MOs are accepted into Kannel? (thereby
reducing the rate of MOs delivered from Kannel via HTTP) What about
throttling the outgoing MO delivery rate, and queuing inside Kannel? I'm
only aware of MT delivery rate throttling, at the SMPP adapters...
A work-around would be useful as a 'plan B', in addition to getting a
proper patch for the issue.
Giulio Harding wrote:
Alexander Malysh wrote:
It's a bug in smsbox that it didn't limit max allowed http
connections. The same bug is present in HTTP SMSC module. HTTP was
fixed by me as I was at Centrium/Wapme but unfortunately I didn't
merged it and don't have modifications anymore but it was really
simple to fix. I will try to provide patch this/next week.
That would be great! Once this issue is resolved, Kannel will
effectively be working 'perfectly' for us :)
as for the fact that MO messages are not retransmitted in smsbox: did
you enable retry in smsbox?
As per the config I attached to my original email, http-request-retry
was set to 0, so no - the smsbox wasn't set to retry.
However, when I re-ran the test with http-request-retry = 10, I didn't
see any difference in behaviour - the log messages were the same
(indicating that http requests failed because of too many open files),
and I didn't see any indication that a retry was being attempted. The
Kannel docs seem to suggest that setting that parameter to a non-zero
value is all that's required to enable retransmits - am I missing
something else?
Thanks,
Alex
Am 03.08.2006, 09:25 Uhr, schrieb Giulio Harding
<[EMAIL PROTECTED]>:
Hillel wrote:
Hi,
Are you using as a OpenSMPP SMSC simulator the
http://opensmpp.logica.com/
or as another version?
Please email back the version you are using, so others can confirm
your
results.
Rgds
Sorry, it turns out the version of OpenSMPP we're using has been
heavily modified from the original - however, I have been able to
reproduce the problem using the latest version of SMPPSim, with the
following configuration options (modified only slightly from the
stock configuration):
SMPP_PORT=7011
SMPP_CONNECTION_HANDLERS=2
CONNECTION_HANDLER_CLASS=com.seleniumsoftware.SMPPSim.StandardConnectionHandler
PROTOCOL_HANDLER_CLASS=com.seleniumsoftware.SMPPSim.StandardProtocolHandler
LIFE_CYCLE_MANAGER=com.seleniumsoftware.SMPPSim.LifeCycleManager
MESSAGE_STATE_CHECK_FREQUENCY=5000
MAX_TIME_ENROUTE=10000
PERCENTAGE_THAT_TRANSITION=75
PERCENTAGE_DELIVERED=100
PERCENTAGE_UNDELIVERABLE=0
PERCENTAGE_ACCEPTED=0
PERCENTAGE_REJECTED=0
DISCARD_FROM_QUEUE_AFTER=60000
HTTP_PORT=8081
HTTP_THREADS=1
DOCROOT=www
AUTHORISED_FILES=/css/style.css,/index.htm,/inject_mo.htm,/favicon.ico,/images/logo.gif,/images/dots.gif,/user-guide.htm,/images/homepage.gif,/images/inject_mo.gif
INJECT_MO_PAGE=/inject_mo.htm
SYSTEM_ID=test
PASSWORD=test
DELIVERY_MESSAGES_PER_MINUTE=12000
DELIVER_MESSAGES_FILE=deliver_messages.csv
LOOPBACK=FALSE
OUTBOUND_QUEUE_MAX_SIZE=500000
INBOUND_QUEUE_MAX_SIZE=500000
DECODE_PDUS_IN_LOG=false
CAPTURE_SME_BINARY=false
CAPTURE_SME_BINARY_TO_FILE=sme_binary.capture
CAPTURE_SMPPSIM_BINARY=false
CAPTURE_SMPPSIM_BINARY_TO_FILE=smppsim_binary.capture
CAPTURE_SME_DECODED=false
CAPTURE_SME_DECODED_TO_FILE=sme_decoded.capture
CAPTURE_SMPPSIM_DECODED=false
CAPTURE_SMPPSIM_DECODED_TO_FILE=smppsim_decoded.capture
CALLBACK=false
CALLBACK_ID=SIM1
CALLBACK_TARGET_HOST=localhost
CALLBACK_PORT=3333
SMSCID=SMPPSim
However, SMPPSim isn't as fast as OpenSMPP, so I had to run 4
instances on separate servers (with additional SMSC configurations in
Kannel accordingly) to reach an MO injection rate of ~600 MOs/sec (no
MTs), in order to trigger the problem.
At rates of ~450 MOs/sec, with no MTs, or ~350 MOs/sec + ~320
MTs/sec, the problem did not surface.
Regardless of the SMSC simulator being used, MO injection rates of
around 600 MOs/sec (on the hardware I described before) triggers the
problem. Has anyone been able to reproduce this yet, or does anyone
have an idea why this might happen?
Cheers,
--Thanks,
Alex
--
Giulio Harding
Systems Administrator
m.Net Corporation
Level 13, 99 Gawler Place
Adelaide SA 5000, Australia
Tel: +61 8 8210 2041
Fax: +61 8 8211 9620
Mobile: 0432 876 733
MSN: [EMAIL PROTECTED]
http://www.mnetcorporation.com
