Hi, Is there any connection limit perhaps hard coded anywhere in xml_curl module? I am load testing FS with xml_curl to provide config, directory and dial-plan. I observed i start getting HTTP ERROR 0 when i have around 1600 concurrent calls on machine with media. Although i see no sign of system overload either on FS (load average < 1.8) or Apache (load average < 4,75). Both have plenty of RAM and bandwidth free. Is there anyway to get rid of this HTTP ERROR 0? It must be generated by FS internally, since i don't see anything like this error in Apache logs. Below 1,638 concurrent calls @ 50 CPS, i get success rate of 99.999% but as soon as it crosses this mark, success rate drastically drops to 60% and even below (when concurrent calls go beyond 2,000). Here is error console log. ################################################### 2013-06-05 18:09:13.591229 [ERR] mod_xml_curl.c:310 Received HTTP error 0 trying to fetch http://172.16.171.61/vm-users.php data: [hostname=vms01§ion=directory&tag_name=domain&key_name=name&key_value=10.1.3.2&Event-Name=GENERAL&Core-UUID=84c917dc-cdde-11e2-9bb2-8b779d6a4e97&FreeSWITCH-Hostname=vms01&FreeSWITCH-Switchname=vms01&FreeSWITCH-IPv4=10.1.3.2&FreeSWITCH-IPv6=%3A%3A1&Event-Date-Local=2013-06-05%2018%3A09%3A03&Event-Date-GMT=Wed,%2005%20Jun%202013%2013%3A09%3A03%20GMT&Event-Date-Timestamp=1370437743591210&Event-Calling-File=mod_voicemail.c&Event-Calling-Function=resolve_id&Event-Calling-Line-Number=1350&Event-Sequence=1776930&action=message-count&key=id&user=989000049598&domain=10.1.3.2] ################################################### Although this setup is more then sufficient for my requirement but i just want to know if i can extend it beyond, since i still have lot of resources free. OS: Debian 6.0.7 x64 Apache: 2.2.16 FreeSWITCH: 1.5.1b+git~20130424T005233Z~66d1755b06 Both FS and Apache are running on separate dedicated machines on same LAN. Thank you. -- Mit freundlichen Grüßen Muhammad Shahzad ----------------------------------- CISCO Rich Media Communication Specialist (CRMCS) CISCO Certified Network Associate (CCNA) Cell: +49 176 99 83 10 85 MSN: shari_786pk@hotmail.com Email: shaheryarkh@googlemail.com