[OpenSIPS-Users] tight matching failed for BYE

[jing]

hi,all
 I used sipp as UAC to test 500 current calls on opensips, when the Total-calls reach to about 30000, opensips crashed. And the log shows as below:
  
 WARNING:dialog:dlg_onroute: tight matching failed for BYE with callid='15587-3269 at x.x.x.x/23, ftag='15587'/5, ttag='15587'/5 and direction=1
WARNING:dialog:dlg_onroute: dialog identification elements are callid=''15587-3269 at x.x.x.x/23/23, caller tag='15587'/5, callee tag='46079'/5
 segfault at 0000000000000020 rip 00002b39b49b70db rsp 00007fff21e81bd0 error 4
WARNING:dialog:dlg_onroute: tight matching failed for BYE with callid='15588-3269 at x.x.x.x/23, ftag='15588'/5, ttag='15588'/5 and direction=1
WARNING:dialog:dlg_onroute: dialog identification elements are callid='15588-3269 at x.x.x.x'/23, caller tag='15588'/5, callee tag='46080'/5
CRITICAL:core:utimer_ticker: utimer handler <tm-utimer> lasted (1110000 us) for more than timer tick (100000 us) -> potential timer shifting
 

 I can't understand the log. What caused the error?
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