Sorry for late reply: this wasn't very helpful. I think Hashing algo code needs to get bit smarter. If there is any possibility can you please let me know. !<div> <br><br><div class="gmail_quote">On Mon, Jun 4, 2012 at 3:33 PM, Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">To make the life easier to spot the hash code in such case, I just committed a small patch to print it for alg 7:<br>
<br>
<a href="http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=83a558fbad700198a8667ef01f756269d7e2c310" target="_blank">http://git.sip-router.org/cgi-<u></u>bin/gitweb.cgi/sip-router/?a=<u></u>commit;h=<u></u>83a558fbad700198a8667ef01f7562<u></u>69d7e2c310</a><br>
<br>
Should be easy to backport if other version is used.<br>
<br>
Cheers,<br>
Daniel<div class="HOEnZb"><div class="h5"><br>
<br>
On 6/4/12 12:23 PM, Carsten Bock wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
It's hard to say, most likely not. You find the used hash-function here:<br>
<br>
841 unsigned int ds_get_hash(str *x, str *y)<br>
<a href="http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=blob;f=modules_k/dispatcher/dispatch.c;h=ae0c51b122d34e29b3474957a64b24ff492cfcd5;hb=HEAD" target="_blank">http://git.sip-router.org/cgi-<u></u>bin/gitweb.cgi?p=sip-router;a=<u></u>blob;f=modules_k/dispatcher/<u></u>dispatch.c;h=<u></u>ae0c51b122d34e29b3474957a64b24<u></u>ff492cfcd5;hb=HEAD</a><br>
<br>
It was originally implemented to distribute usernames to servers,<br>
which worked fine.<br>
<br>
Carsten<br>
<br>
2012/6/4 SamyGo <<a href="mailto:govoiper@gmail.com" target="_blank">govoiper@gmail.com</a>>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks Sir,<br>
<br>
Thats what I expected. Do you think this will change if I use only two<br>
values with huge difference in each other, lets say {26000,29000} ?<br>
<br>
Regards,<br>
Sammy<br>
<br>
On Mon, Jun 4, 2012 at 3:05 PM, Carsten Bock <<a href="mailto:carsten@ng-voice.com" target="_blank">carsten@ng-voice.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
this functionality uses a generic "hash" function to generate an<br>
Integer-Value of the PVAR and then reduces this to the number hosts in<br>
your destination set.<br>
If you have only using two different values of the PVAR and only two<br>
hosts in the dispatcher list, it can likely happen, that the same host<br>
is choosen. You should try a wider range of values for your PVAR...<br>
(e.g. try 1000 different values), then you should see a distribution.<br>
<br>
Carsten<br>
<br>
2012/6/4 SamyGo <<a href="mailto:govoiper@gmail.com" target="_blank">govoiper@gmail.com</a>>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
No, nothing at all. I haven't went too deep into debug logs but no<br>
internal<br>
error was appearing. Everything was as calm as ever and I only get one<br>
destination uri.<br>
<br>
So maybe what I'm getting from your email is that , for this to work the<br>
way<br>
I expect is to have more unique and random values in my hash_pvar to get<br>
the<br>
required functionality.<br>
<br>
Thanks once again,<br>
BR<br>
SG<br>
<br>
On Mon, Jun 4, 2012 at 11:52 AM, Daniel-Constantin Mierla<br>
<<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
do you get any errors in the log?<br>
<br>
Be aware that hash functions may return same code for different input<br>
values. A hash function is guaranteed to return same code for same<br>
input<br>
value, but there can be collisions of codes for different values.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<br>
On 6/3/12 3:41 PM, SamyGo wrote:<br>
<br>
Hello,<br>
<br>
I'm having trouble using algorithm 7 in dispatcher module. Here is my<br>
kamailio version. The problem is that despite multiple dispatcher<br>
entries<br>
corresponding to one set all calls go only to only one destination.<br>
<br>
<br>
[root@control1 ~]# kamailio -V<br>
version: kamailio 3.2.3 (x86_64/linux) 59f87e<br>
flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS,<br>
USE_RAW_SOCKS,<br>
DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC,<br>
DBG_QM_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE,<br>
USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES<br>
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,<br>
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB<br>
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.<br>
id: 59f87e<br>
compiled on 18:04:08 Apr 19 2012 with gcc 4.1.2<br>
[root@control1 ~]#<br>
<br>
Here is the dipacther module params.<br>
<br>
<br>
<br>
# ------- Load-balancer params ------<br>
modparam("dispatcher", "db_url", DBURL)<br>
modparam("dispatcher", "table_name", "dispatcher")<br>
modparam("dispatcher", "setid_col", "setid")<br>
modparam("dispatcher", "destination_col", "destination")<br>
modparam("dispatcher", "force_dst", 1)<br>
modparam("dispatcher", "flags", 3)<br>
modparam("dispatcher", "dst_avp", "$avp(i:271)")<br>
modparam("dispatcher", "cnt_avp", "$avp(i:273)")<br>
modparam("dispatcher", "ds_ping_from", "sip:proxy@109.XXX.2XX.XX")<br>
modparam("dispatcher", "ds_ping_interval",15)<br>
modparam("dispatcher", "ds_probing_mode", 1)<br>
modparam("dispatcher", "ds_ping_reply_codes",<br>
"class=2;code=403;code=404;<u></u>code=484;class=3")<br>
modparam("dispatcher", "hash_pvar", "$avp(i:274)")<br>
modparam("dispatcher", "ds_hash_size", 9)<br>
modparam("dispatcher", "ds_hash_initexpire", 60)<br>
<br>
<br>
<br>
Below is the function call based on avp(i:274)<br>
<br>
<br>
<br>
avp_db_query("select uid from uid_did_map where accountcode =<br>
'$fU'","$avp(i:274)");<br>
xlog("L_INFO","$rm from $fu (IP:$si:$sp) ---------<br>
UID:'$avp(i:274)-----------'\<u></u>n");<br>
ds_load_update();<br>
if(!ds_select_dst("1","7")) {<br>
sl_send_reply("500", "No destination<br>
available");<br>
xlog("route[MAIN] : $rm : No destinations<br>
available for $rd");<br>
exit;<br>
}<br>
<br>
<br>
I'm getting two different values for avp(i:274) {26,29} but the<br>
destination are not hashed on its base.<br>
<br>
Please help.<br>
<br>
Regards,<br>
Sammy G.<br>
<br>
<br>
<br>
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<br>
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</blockquote>
<br>
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<br>
<br>
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<br>
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<br>
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</blockquote>
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<br>
</blockquote>
<br>
-- <br>
Daniel-Constantin Mierla - <a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a><br>
<a href="http://twitter.com/#!/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/<u></u>miconda</a><br>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a href="http://asipto.com/u/katu" target="_blank">http://asipto.com/u/katu</a><br>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a href="http://asipto.com/u/kpw" target="_blank">http://asipto.com/u/kpw</a><br>
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<br>
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