Hi again,
a new stage in developing general support for statistics in openser was completed: 1) optimization of the Statistic Manager implementation - usage of atomic ops for i386 2) clean-up and replace old core statistics (former stats.c that depended on some snmp stuff) 3) replace local module statistics in sl, tm and usrloc with statistics via the general Manger.
next stage: 1) building a module to provide dynamic script statistics - it will allow you to perform any kind of counting based of script criteria: you can count how many calls were sent to GW or voicemail, how many call had g.729 codec, etc. 2) more statistics in other modules
Available statistics: Core: core:rcv_requests - number of received requests core:rcv_replies - number of received replies core:fwd_requests - number of stateless forwarded requests core:fwd_replies - number of stateless forwarded replies (relayed replies) core:drop_requests - number of dropped requests (due post/pre script callbacks or due script execution) core:drop_replies - number of dropped replies module's reply function core:err_requests - malformed received requests core:err_replies - malformed received replies Shared Memory: shmem:total_size - total available sh mem shmem:used_size - used sh mem shmem:real_used_size - used sh mem including the internal overhead shmem:max_used_size - maximum of real used memory during execution shmem:free_size - free shm mem shmem:fragments - number of sh mem fragments SL module: sl:1xx_replies - number of 1xx sent replies sl:2xx_replies - number of 2xx sent replies sl:3xx_replies - number of 3xx sent replies sl:4xx_replies - number of 4xx sent replies sl:5xx_replies - number of 5xx sent replies sl:6xx_replies - number of 6xx sent replies sl:sent_replies - total number of sent replies sl:sent_err_replies - replies sent via sl_error_send() sl:received_ACKs - number of received ACKs due sending negative replies TM module tm:received_replies - number of statefull received replies tm:relayed_replies - number of statefull relayed replies tm:local_replies - number of statefull replies local generated (like t_reply() ) tm:UAS_transactions - no. of processed UAS transactions (build on received request) tm:UAC_transactions - no. of processed UAC transactions (no received, but only sent request - via t_uac()) tm:2xx_transactions - number of transactions completed via 2xx replies tm:3xx_transactions - number of transactions completed via 3xx replies tm:4xx_transactions - number of transactions completed via 4xx replies tm:5xx_transactions - number of transactions completed via 5xx replies tm:6xx_transactions - number of transactions completed via 6xx replies tm:inuse_transactions - how many transactions are still in memory MSILO module msilo:stored_messages - no. of messages stored in DB msilo:dumped_messages - no. of stored messages that were finally delivered msilo:failed_messages - no. of stored messages that were discarded (unable to deliver) msilo:dumped_reminders - no. of stored reminder messages that were finally delivered msilo:failed_reminders - no. of stored reminder messages that were discarded (unable to deliver) USRLOC module usrloc:location-users - number of registered users (AORs) usrloc:location-contacts - number of registered contacts usrloc:location-expires - number of contacts that expired
For how to access these statistics (via FIFO), please see my previous email.
regards, bogdan
Bogdan-Andrei Iancu wrote:
Hi everybody,
A new feature is present on the development version of openser - Global Statistics Management support: the core includes a Statistics Manager which roll is to collect statistics variables from all over openser and to offer management support (to create and operate them); it also provides a single, centralized point of access to allow external apps or internal modules to get any statistics.
How it works? the core and the module exports different statistics variables (via the module interface). The Statistics Manager (SM) offers support for auto-initialization, for updating ans resetting variables. The statistics variables are kept into shared mem to be accessible to all processes. Synchronization support is offered by SM.
Statistic variable capabilities
be defined with: NO_RESET (it cannot be reset -ex. used mem, registersubscribers, etc) NO_SYNC (it will not be synchronized during ops; by their nature, some variables are already synchronized) be updated (added with new val) be reset (set to zero if allowed).
Accessing the statistics
The SM export two FIFO functions for offering access to the statistics: "get_statistics all" - gets all statistics "get_statistics stat_name" - gets the value of the stat_name variable "get_statistics module_name:" - get all statistics exported by module "module name"; to get statistics from core, use "core" as module_name "reset_statistics stat_name" - sets to 0 the value of the stat_name variable
The SM internally offers an API to be used by other modules interested in accessing the statistics. Ex: a future snmp module
Current statistics
For the moment only a few core statistics are defined (we can easily add them in time): received requests : "rcv_reqs" received replies : "rcv_rpls" dropped requests (by scripts or post-script callbacks) : "drp_reqs" dropped replies (by scripts or post-script callbacks) : "drp_rpls" error requests (basic parsing failed) : "err_reqs" error replies (bassic parsing failed) : "err_rpls"
How to use it
first to need to enable its compiling - enable the -DSTATISTICS flag in Makefile.def (by default is disabled). Recompile and run openser. Use fifo to get the statistics. Ex: openserctl fifo get_statistics all openserctl fifo get_statistics core: openserctl fifo get_statistics rcv_reqs
Next steps
optimization of the SM (better locking for sync, usage of atomic ops if possible)
replace old statistics (see stats.c) - the code is not compiling since it depends on some snmp stuff...
replace local module statistics (sl,tm,usrloc) with sttistics via SM
add more statistics...ideas are welcomed
new module to implement dynamic statistics variables to be used from script.
regards, bogdan
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