On Fri, Aug 26, 2016 at 02:42:27PM -0700, Adrian Chadd wrote: > On 26 August 2016 at 14:36, Slawa Olhovchenkov <s...@zxy.spb.ru> wrote: > > On Fri, Aug 26, 2016 at 02:32:00PM -0700, Adrian Chadd wrote: > > > >> Hi, > >> > >> It's pcb lock contention. > > > > Not sure: only 5% of all time. > > And same 5% for tcbhashsize = 65K and 256K. > > Or you talk about some more thin effect? > > You're in the inpcb lock from multiple places.
For tcp case I am found only 3 places: in_pcbdrop in_pcbremlists in_pcblookup_hash > the tcbhashsize doesnt influence the pcb lock contention - it just > affects how long you take doing lookups. iF your hash table is too > small then you end up doing lots of O(n) walks of a hash bucket to > find a pcb entry. :) Hmm. I am not clearly understund you. How originate pcb lock contention? How I can see this (in pmc profile, in dtarce probese)? _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
