Hi, Daniel

I just tested the dispatcher in 4.3.1. It showed the same behavior as 4.2.3. All the calls are sent to one Asterisk (the last one in the dispatcher list), the maxload setting in dispatcher table is ignored. 

We use db dispatcher table instead of dispatcher list file, and the kamailio.cfg is the same as included in the previous email in this thread.

Hope I didn't make any mistake in kamailio.cfg. 

Thanks

On Fri, Jun 12, 2015 at 12:34 AM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Yes, 4.3 should have all fixes in 4.2.

Cheers,
Daniel

On 12/06/15 06:06, Ding Ma wrote:

OK, we’ll try to update and report back. Wonder if the latest 4.3 has all the fixes went into the latest 4.2.x. We already have plan to upgrade to 4.3. 

Thanks. 

On Jun 10, 2015, at 10:01 AM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

It was a fix for maxload during 4.2.x, but don't recall exactly when was backported. Can you upgrade to latest 4.2.x and see the results? Your config file and database don't require any change, only deploy the binaries for latest 4.2.x and restart.

If the issue is still there with latest 4.2.x, report here and I will look at it with the first chance.

Cheers,
Daniel

On 10/06/15 16:50, Ding Ma wrote:

We're running kamailio 4.2.3. Are there any changes to dispatcher in 4.2.x?

Thanks,

# kamailio -V

version: kamailio 4.2.3 (x86_64/linux) 5596bd

flags: STATS: Off, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, F_MALLOC, DBG_F_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES

ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB

poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.

id: 5596bd

compiled on 09:32:37 May  6 2015 with gcc 4.4.7

On Wed, Jun 10, 2015 at 7:01 AM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

what version of kamailio are you using?

Cheers,
Daniel

On 09/06/15 20:51, Ding Ma wrote:

I'm trying to set up kamailio dispatcher to distribute calls to 2 asterisk servers. So far, the failover case seems ok, but I cannot get the dispatcher to distribute load. All calls are going to the last destination entry in the dispatcher table even if I have set the maxload attributes. I'm using algorithm 10 for load distribution. The number of calls sent to one asterisk is well above the maxload. Hope someone more experienced in dispatcher can review my config and give me some recommendations. Thanks in advance.

Here is the content of dispatcher table in postgresql db.

select * from dispatcher;

 id | setid |    destination     | flags | priority |           attrs           | description

----+-------+--------------------+-------+----------+---------------------------+-------------

  1 |     1 | sip:10.0.1.31:5061 |     0 |        0 | duid=asterisk1;maxload=25 | Asterisk1

  2 |     1 | sip:10.0.1.33:5061 |     0 |        0 | duid=asterisk2;maxload=25 | Asterisk2

(2 rows)

Here are the dispatcher sections in kamailio.cfg.

# ----- dispatcher params -----

#!ifdef WITH_DISPATCHER

modparam("dispatcher", "db_url", DBASTURL)

modparam("dispatcher", "table_name", "dispatcher")

modparam("dispatcher", "force_dst", 1). 

# If flag 2 is set, then failover support is enabled.

modparam("dispatcher", "flags", 3)

# the last address in destination set is used as a final option to send the request to

modparam("dispatcher", "use_default", 1)

# load balancing fail over

modparam("dispatcher", "dst_avp", "$avp(dsdst)")

modparam("dispatcher", "grp_avp", "$avp(dsgrp)")

modparam("dispatcher", "cnt_avp", "$avp(dscnt)")

modparam("dispatcher", "dstid_avp", "$avp(dsdstid)")

modparam("dispatcher", "attrs_avp", "$avp(dsattrs)")

# PVs for hashing

modparam("dispatcher", "hash_pvar", "$fU@$ci")

# PVs to store results when calling ds_is_from_list

modparam("dispatcher", "setid_pvname", "$var(setid)")

modparam("dispatcher", "attrs_pvname", "$var(attrs)")

# method to probe the gateways

modparam("dispatcher", "ds_ping_method", "OPTIONS")

modparam("dispatcher", "ds_ping_from", "sip:dispatcher@localhost")

modparam("dispatcher", "ds_ping_interval", 30)

modparam("dispatcher", "ds_probing_threshhold", 10)

modparam("dispatcher", "ds_ping_reply_codes", "class=2;code=403;code=404;code=484;code=488;class=3")

modparam("dispatcher", "ds_probing_mode", 1)

# size of hash table storing data for call load dispatching, power of two

modparam("dispatcher", "ds_hash_size", 10)

# expiration time in seconds to remove the load on a destination if no BYE was received

modparam("dispatcher", "ds_hash_expire", 3600)

# expiration time in seconds to remove the load on a destination if no 200 OK for INVITE was received

# and state updated with ds_load_update

modparam("dispatcher", "ds_hash_initexpire", 60)

modparam("dispatcher", "ds_hash_check_interval", 30)

#!endif

route[WITHINDLG] {

if (has_totag()) {

# sequential request withing a dialog should

# take the path determined by record-routing

#!ifdef WITH_DISPATCHER

if(is_method("BYE|CANCEL") && ds_is_from_list("1", "3"))

ds_load_update();

#!endif

......

       }

}

route[FROMASTERISK] {

#!ifdef WITH_DISPATCHER

if(ds_is_from_list("1", "3")) {

xlog("L_DBG","$rm from $fU@$si:$sp: Call from Asterisk cluster\n");

return 1;

}

return -1;

#!else

if ($si==$sel(cfg_get.asterisk.bindip)) {

return 1;

}

return -1;

#!endif

}

onreply_route[MANAGE_REPLY] {

xdbg("incoming reply\n");

#!ifdef WITH_DISPATCHER

if(is_method("INVITE") && ds_is_from_list("1", "3")) {

if(status=~"2[0-9][0-9]") {

ds_load_update();

}

else if(status=~"[3-7][0-9][0-9]") {

ds_load_unset();

}

}

#!endif

if(status=~"[12][0-9][0-9]")

route(NATMANAGE);

}

#!ifdef WITH_DISPATCHER

failure_route[RTF_DISPATCH] {

if (t_is_canceled()) {

exit;

}

# next DST - only for 500 or local timeout

if (t_check_status("500") or (t_branch_timeout() and !t_branch_replied())) {

                # mark the destination Inactive and Probing

ds_mark_dst("IP");

                # select the new destination

if(ds_next_dst()) {

t_on_failure("RTF_DISPATCH");

route(RELAY);

exit;

}

                else {

                        # last available node failed to reply, no other destinations available

                        send_reply("404", "No destination");

                        exit;

                }

}

}

#!endif

route[TOASTERISK] {

#!ifdef WITH_DISPATCHER

# ds_mark_dst("IP");

# Call load distribution

if(!ds_select_dst("1", "10")) {

sl_send_reply("500", "Service Unavailable");

xlog("L_INFO","$rm from $fU@$si:$sp: No destinations available for $rd\n");

                exit;

        }

xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n");

t_on_failure("RTF_DISPATCH");

#!else

    $du = "sip:" + $sel(cfg_get.asterisk.bindip) + ":"

+ $sel(cfg_get.asterisk.bindport);

#!endif

route(RELAY);

exit;

}

# Dispatcher detects a destination goes down

event_route[dispatcher:dst-down] {

    xlog("L_ERR", "Destination down: $rm $ru ($du)\n");

}

# Dispatcher detects a destination comes up 

event_route[dispatcher:dst-up] {

    xlog("L_ERR", "Destination up: $rm $ru\n");

}

_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com

_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com