Hi, Any direction regarding the crash when we increase vlib_buffer count ? We are using vpp vpp# show version verbose Version: v19.08.1-155~g09ca6fa-dirty Compiled by: cbhasin Compile host: bfs-dl360g10-14-vm25 Compile date: Tue 11 Feb 05:52:33 GMT 2020 Compile location: /nfs-bfs/workspace/odc/cbhasin/ngp/mainline/third-party/vpp/vpp_1908 Compiler: GCC 7.3.1 20180303 (Red Hat 7.3.1-5)
Back-trace are provided by Prashant https://pastebin.com/1YS3ZWeb Thanks, Chetan Bhasin On Tue, Feb 4, 2020 at 3:07 PM Prashant Upadhyaya <praupadhy...@gmail.com> wrote: > Thanks Benoit. > I don't have the core files at the moment (still taming the huge cores > that are generated, so they were disabled on the setup) > Backtraces are present at (with indicated config of the parameter) -- > https://pastebin.com/1YS3ZWeb > It is a dual numa setup. > > Regards > -Prashant > > > On Tue, Feb 4, 2020 at 1:55 PM Benoit Ganne (bganne) <bga...@cisco.com> > wrote: > > > > Hi Prashant, > > > > Can you share your configuration and at least a backtrace of the crash? > Or even better a corefile: > https://fd.io/docs/vpp/master/troubleshooting/reportingissues/reportingissues.html > > > > Best > > ben > > > > > -----Original Message----- > > > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Prashant > > > Upadhyaya > > > Sent: mardi 4 février 2020 09:15 > > > To: vpp-dev@lists.fd.io > > > Subject: Re: [vpp-dev] Regarding buffers-per-numa parameter > > > > > > Woops, my mistake. I think I multiplied by 1024 extra. > > > Mbuf's are 2KB's, not 2 MB's (that's the huge page size) > > > > > > But the fact remains that my usecase is unstable at higher configured > > > buffers but is stable at lower values like 100000 (this can by all > > > means be my usecase/code specific issue) > > > > > > If anybody else facing issues with higher configured buffers, please do > > > share. > > > > > > Regards > > > -Prashant > > > > > > > > > On Tue, Feb 4, 2020 at 1:31 PM Prashant Upadhyaya > > > <praupadhy...@gmail.com> wrote: > > > > > > > > Hi, > > > > > > > > I am using DPDK Plugin with VPP19.08. > > > > When I set the buffers-per-numa parameter to a high value, say, > > > > 250000, I am seeing crashes in the system. > > > > > > > > (The corresponding parameter controlling number of mbufs in VPP18.01 > > > > used to work well. This was in dpdk config section as num-mbufs) > > > > > > > > I quickly checked in VPP19.08 that vlib_buffer_main_t uses fields > > > > which are uwords :- > > > > uword buffer_mem_start; > > > > uword buffer_mem_size; > > > > > > > > Is it a mem size overflow in case the buffers-per-numa parameter is > > > > set to a high value ? > > > > I do need a high number of DPDK mbuf's in my usecase. > > > > > > > > Regards > > > > -Prashant > >
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