It's hard to say, most likely not. You find the used hash-function here: 841 unsigned int ds_get_hash(str *x, str *y) http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=blob;f=modules_k/dispatcher/dispatch.c;h=ae0c51b122d34e29b3474957a64b24ff492cfcd5;hb=HEAD
It was originally implemented to distribute usernames to servers, which worked fine. Carsten 2012/6/4 SamyGo <govoi...@gmail.com>: > Thanks Sir, > > Thats what I expected. Do you think this will change if I use only two > values with huge difference in each other, lets say {26000,29000} ? > > Regards, > Sammy > > On Mon, Jun 4, 2012 at 3:05 PM, Carsten Bock <cars...@ng-voice.com> wrote: >> >> Hi, >> >> this functionality uses a generic "hash" function to generate an >> Integer-Value of the PVAR and then reduces this to the number hosts in >> your destination set. >> If you have only using two different values of the PVAR and only two >> hosts in the dispatcher list, it can likely happen, that the same host >> is choosen. You should try a wider range of values for your PVAR... >> (e.g. try 1000 different values), then you should see a distribution. >> >> Carsten >> >> 2012/6/4 SamyGo <govoi...@gmail.com>: >> > Hi, >> > >> > No, nothing at all. I haven't went too deep into debug logs but no >> > internal >> > error was appearing. Everything was as calm as ever and I only get one >> > destination uri. >> > >> > So maybe what I'm getting from your email is that , for this to work the >> > way >> > I expect is to have more unique and random values in my hash_pvar to get >> > the >> > required functionality. >> > >> > Thanks once again, >> > BR >> > SG >> > >> > On Mon, Jun 4, 2012 at 11:52 AM, Daniel-Constantin Mierla >> > <mico...@gmail.com> wrote: >> >> >> >> Hello, >> >> >> >> do you get any errors in the log? >> >> >> >> Be aware that hash functions may return same code for different input >> >> values. A hash function is guaranteed to return same code for same >> >> input >> >> value, but there can be collisions of codes for different values. >> >> >> >> Cheers, >> >> Daniel >> >> >> >> >> >> On 6/3/12 3:41 PM, SamyGo wrote: >> >> >> >> Hello, >> >> >> >> I'm having trouble using algorithm 7 in dispatcher module. Here is my >> >> kamailio version. The problem is that despite multiple dispatcher >> >> entries >> >> corresponding to one set all calls go only to only one destination. >> >> >> >> >> >> [root@control1 ~]# kamailio -V >> >> version: kamailio 3.2.3 (x86_64/linux) 59f87e >> >> flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, >> >> USE_RAW_SOCKS, >> >> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, >> >> DBG_QM_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 4MB >> >> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. >> >> id: 59f87e >> >> compiled on 18:04:08 Apr 19 2012 with gcc 4.1.2 >> >> [root@control1 ~]# >> >> >> >> Here is the dipacther module params. >> >> >> >> >> >> >> >> # ------- Load-balancer params ------ >> >> modparam("dispatcher", "db_url", DBURL) >> >> modparam("dispatcher", "table_name", "dispatcher") >> >> modparam("dispatcher", "setid_col", "setid") >> >> modparam("dispatcher", "destination_col", "destination") >> >> modparam("dispatcher", "force_dst", 1) >> >> modparam("dispatcher", "flags", 3) >> >> modparam("dispatcher", "dst_avp", "$avp(i:271)") >> >> modparam("dispatcher", "cnt_avp", "$avp(i:273)") >> >> modparam("dispatcher", "ds_ping_from", "sip:pr...@109.xxx.2xx.xx") >> >> modparam("dispatcher", "ds_ping_interval",15) >> >> modparam("dispatcher", "ds_probing_mode", 1) >> >> modparam("dispatcher", "ds_ping_reply_codes", >> >> "class=2;code=403;code=404;code=484;class=3") >> >> modparam("dispatcher", "hash_pvar", "$avp(i:274)") >> >> modparam("dispatcher", "ds_hash_size", 9) >> >> modparam("dispatcher", "ds_hash_initexpire", 60) >> >> >> >> >> >> >> >> Below is the function call based on avp(i:274) >> >> >> >> >> >> >> >> avp_db_query("select uid from uid_did_map where accountcode = >> >> '$fU'","$avp(i:274)"); >> >> xlog("L_INFO","$rm from $fu (IP:$si:$sp) --------- >> >> UID:'$avp(i:274)-----------'\n"); >> >> ds_load_update(); >> >> if(!ds_select_dst("1","7")) { >> >> sl_send_reply("500", "No destination >> >> available"); >> >> xlog("route[MAIN] : $rm : No destinations >> >> available for $rd"); >> >> exit; >> >> } >> >> >> >> >> >> I'm getting two different values for avp(i:274) {26,29} but the >> >> destination are not hashed on its base. >> >> >> >> Please help. >> >> >> >> Regards, >> >> Sammy G. >> >> >> >> >> >> >> >> _______________________________________________ >> >> 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://www.asipto.com >> >> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda >> >> Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - >> >> http://asipto.com/u/katu >> >> Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - >> >> http://asipto.com/u/kpw >> >> >> >> >> >> >> > >> > >> > _______________________________________________ >> > 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 >> > >> >> >> >> -- >> Carsten Bock >> CEO (Geschäftsführer) >> >> ng-voice GmbH >> Schomburgstr. 80 >> D-22767 Hamburg / Germany >> >> http://www.ng-voice.com >> mailto:cars...@ng-voice.com >> >> Mobile +49 179 2021244 >> Office +49 40 34927219 >> Fax +49 40 34927220 >> >> Sitz der Gesellschaft: Hamburg >> Registergericht: Amtsgericht Hamburg, HRB 120189 >> Geschäftsführer: Carsten Bock >> Ust-ID: DE279344284 >> >> Hier finden Sie unsere handelsrechtlichen Pflichtangaben: >> http://www.ng-voice.com/imprint/ >> >> _______________________________________________ >> 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 > > > > _______________________________________________ > 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 > -- Carsten Bock CEO (Geschäftsführer) ng-voice GmbH Schomburgstr. 80 D-22767 Hamburg / Germany http://www.ng-voice.com mailto:cars...@ng-voice.com Mobile +49 179 2021244 Office +49 40 34927219 Fax +49 40 34927220 Sitz der Gesellschaft: Hamburg Registergericht: Amtsgericht Hamburg, HRB 120189 Geschäftsführer: Carsten Bock Ust-ID: DE279344284 Hier finden Sie unsere handelsrechtlichen Pflichtangaben: http://www.ng-voice.com/imprint/ _______________________________________________ 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