On 10.08.2020 23:36, Peter Zijlstra wrote: > On Mon, Aug 10, 2020 at 07:45:18AM -0700, Andi Kleen wrote: > >> Unfortunately we're kind of stuck with the old NFILE=1024 default >> even though it makes little sense on modern servers. > > Why can't that be changed? It seems to me all of userspace changes all > the time; heck that system-doofus thing flushed 20+ years of sysadmin > experience down the drain, just cause. Why can't we up a file limit? >
If you asked me I would say that Intel VTune HW micro architecture analysis would also be unblocked by pushing RLIMIT_NOFILE limit beyond its current 1K default. Currently rule of thumb for VTune users is to set the limit to value == #cores X # events. The recommended value is 64K [1]. BR, Alexei [1] https://software.intel.com/content/www/us/en/develop/documentation/vtune-cookbook/top/configuration-recipes/profiling-hardware-without-sampling-drivers.html
