Thank you very much for explaining Gustaf, at least I know now that somewhere in my Tcl code something is wrong. I'm using only 2 C modules/packages.
On Fri, Nov 5, 2021 at 7:37 AM Gustaf Neumann <neum...@wu.ac.at> wrote: > Dear Maksym, > > These kind of errors should never happen, but when this happen, this can > come from NaviServer or Tcl or some C modules/package loaded. > > The last time i saw this kind of crash in a NaviServer environment, it > was triggered from Tcl, where a select() was tried in a situation where > more than 1024 file descriptors were open (stay away from async Tcl I/O > operations and use NaviServer built-in features ... e.g. ns_http instead > of tcllib http). The number of open file descriptors of NaviServer can > be monitored e.g. by the munin-plugins [2,3]. > > To debug this situation, > - make sure to compile Tcl and NaviServer with debugging symbols (i.e. > with compiler flag "-g" [1]), > - make sure, core dumps are enabled, and when you have a core, > - use "gdb /usr/local/ns/bin/nsd YOURCORE" to see exactly, where this > happened. > > all the best > > -g > > [1] https://openacs.org/forums/message-view?message_id=5537675 > [2] https://github.com/gustafn/munin-plugins-ns > [3] > > https://openacs.org/munin/localdomain/localhost.localdomain/naviserver_openacs_lsof.html > > On 04.11.21 21:17, Maksym Zinchenko wrote: > > Hi every now and then my server crashes with the last message in the > > log file *** Buffer overflow detected *** I would really appreciate if > > someone can point me in the right direction of debugging and figure > > out what's going on. > > Thank you > > Maksym Zinchenko > > > > _______________________________________________ > naviserver-devel mailing list > naviserver-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/naviserver-devel >
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