On 9/26/2017 9:07 PM, Peter Stuge wrote: > Mike Tancsa wrote: >> Without leaving the server at debug2 logging level, is there a way >> to find out if I am hitting application limits vs OS limits ? > > If you run sshd under ktrace maybe you can spot resource limit errors > for relevant syscalls in the kdump output. Thanks! Although in this case, the measurement seems pretty resource intensive. I increased the MaxSessions and as well as MaxStartups and I have the failure rate down to under 10 per day. So it seems based on changing that, it is application limits ? I added MaxSessions 920 ClientAliveInterval 15 # get rid of procs sitting arround MaxStartups 30:50:500 Most of the clients come behind a single natted IP. ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@xxxxxxxxxx Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/ _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev