One thing that will make ssh connection really slow is if it does not have access to a resolver.
On Mon, Jul 8, 2013 at 10:16 AM, David Crayford <[email protected]> wrote: > IIRC, IBM have a new release of SSH that has CPACF acceleration. > > > On 8/07/2013 9:57 PM, Paul Gilmartin wrote: > >> Comparing performance of ssh to MVS and Solaris severs, respectively: >> >> From Solaris to MVS: >> >> 133$ time ssh user@MVS date >> Mon Jul 8 07:43:06 MDT 2013 >> >> real 0m15.10s >> user 0m0.07s >> sys 0m0.01s >> >> From Solaris to another Solaris: >> >> 134$ time ssh user@solaris date >> Monday, July 8, 2013 07:43:57 AM MDT >> >> real 0m0.61s >> user 0m0.15s >> sys 0m0.01s >> >> The MVS performance is awful (in the synchronic sense). >> Is there any way to tell where the overhead lies, or >> even whether ICSF is being used rather than ssh_rand_helper? >> >> How does this compare with other users' experience? >> >> (Once an interactive connection is established, response >> is quite good.) >> >> -- gil >> >> ------------------------------**------------------------------** >> ---------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO IBM-MAIN >> > > ------------------------------**------------------------------**---------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- The postings on this site are my own and don’t necessarily represent Mainline’s positions or opinions Mark D Pace Senior Systems Engineer Mainline Information Systems ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
