Hi Matt,
I’ll let Neale provide more details but I think that what you’re looking for is
to start vpp with ip {heap-size <value>}
Cheers,
Florin
> On Jan 29, 2018, at 1:24 PM, Matthew Smith <mgsm...@netgate.com> wrote:
>
>
> Hi,
>
> I’ve been trying to insert a large set of routes into VPP’s FIB. VPP keeps
> exiting after adding a very specific amount of them (64278). If I attach to
> the vpp process with gdb and start adding the routes, after a few seconds an
> ABRT is received. The backtrace (see below) shows that os_out_of_memory() was
> called as a result of trying to resize a vector containing FIB data
> structures.
>
> I was loading the routes originally using a BGP daemon that has been modified
> to communicate with the VPP API. When I had problems with that, I stopped
> using the BGP daemon and tried adding the same routes using both vppctl and
> vpp_api_test. They all ended up at the same result.
>
> The procedure I have been using to load routes is:
>
> systemctl start vpp
> vppctl set int ip addr TenGigabitEthernet2/0/0 198.51.100.1/24
> vppctl set int state TenGigabitEthernet2/0/0 up
> vppctl exec <file_with_routes>
>
> An example of the commands I used to add routes with vppctl is:
>
> ip route add 10.20.30.0/24 table 0 via 198.51.100.2 TenGigabitEthernet2/0/0
>
> All routes are added to the same table and all have the same next-hop address
> and interface. Only the destination prefix varies. I noticed that if I omit
> the command to set an IP address on the interface, that a larger number of
> routes - about 103k - can be processed before VPP dies. The system I am
> testing on is an Atom C2758 with 16 GB of RAM. Just to make sure it wasn’t an
> issue specific to that system, I repeated the test on a Xeon D-1541 with 32
> GB of RAM also and saw the exact same behavior (died after adding 64278
> routes). Neither system has anything else running on it.
>
> Is there any memory tuning required in order to add a large number of routes
> to a FIB? Or is this a bug? I tried increasing the hugepages memory (to 4 GB
> plus increased vm.max_map_count and kernel.shmmax) and the DPDK socket-mem
> (to 1 GB) because those were the memory parameters that I knew of that could
> be tuned. Does anyone know what I’m doing wrong or have any ideas for where I
> should look?
>
> Thanks!
> -Matt
>
>
> Backtrace:
>
> (gdb) bt
> #0 0x00007feece2761f7 in __GI_raise (sig=sig@entry=6) at raise.c:56
> #1 0x00007feece2778e8 in __GI_abort () at abort.c:90
> #2 0x0000000000405fa3 in os_panic ()
> #3 0x00007feecef8c7b2 in clib_mem_alloc_aligned_at_offset
> (os_out_of_memory_on_failure=1, align_offset=<optimized out>, align=64,
> size=13676394) at mem.h:105
> #4 vec_resize_allocate_memory (v=v@entry=0x7fee50be3480,
> length_increment=length_increment@entry=1, data_bytes=<optimized out>,
> header_bytes=<optimized out>, header_bytes@entry=48,
> data_align=data_align@entry=64) at vec.c:84
> #5 0x00007feecfbfa0cf in _vec_resize (data_align=64, header_bytes=48,
> data_bytes=<optimized out>, length_increment=1, v=<optimized out>) at
> vec.h:142
> #6 ply_create (init_leaf=init_leaf@entry=3, leaf_prefix_len=16,
> ply_base_len=ply_base_len@entry=16, m=<optimized out>) at ip4_mtrie.c:183
> #7 0x00007feecfbfa6f7 in set_root_leaf (a=0x7fee8f7fa880, m=0x7fee4fa70600)
> at ip4_mtrie.c:495
> #8 ip4_fib_mtrie_route_add (m=0x7fee4fa70600,
> dst_address=dst_address@entry=0x7fee8e640668, dst_address_length=<optimized
> out>, adj_index=<optimized out>) at ip4_mtrie.c:646
> #9 0x00007feecff356a8 in ip4_fib_table_fwding_dpo_update (fib=<optimized
> out>, addr=addr@entry=0x7fee8e640668, len=<optimized out>, dpo=<optimized
> out>) at ip4_fib.c:386
> #10 0x00007feecff3a554 in fib_table_fwding_dpo_update (fib_index=<optimized
> out>, prefix=prefix@entry=0x7fee8e640658, dpo=dpo@entry=0x7fee8e640674) at
> fib_table.c:252
> #11 0x00007feecff45f98 in fib_entry_src_action_install
> (fib_entry=0x7fee8e64064c, source=<optimized out>) at fib_entry_src.c:606
> #12 0x00007feecff43a60 in fib_entry_create (fib_index=fib_index@entry=0,
> prefix=prefix@entry=0x7fee8f7faa80, source=source@entry=FIB_SOURCE_CLI,
> flags=flags@entry=FIB_ENTRY_FLAG_NONE, paths=paths@entry=0x7fee8f6e0e48) at
> fib_entry.c:704
> #13 0x00007feecff3ac40 in fib_table_entry_path_add2
> (fib_index=fib_index@entry=0, prefix=prefix@entry=0x7fee8f7faa80,
> source=source@entry=FIB_SOURCE_CLI, flags=flags@entry=FIB_ENTRY_FLAG_NONE,
> rpath=rpath@entry=0x7fee8f6e0e48) at fib_table.c:568
> #14 0x00007feecfc56f5a in vnet_ip_route_cmd (vm=0x7feed05522c0
> <vlib_global_main>, main_input=<optimized out>, cmd=<optimized out>) at
> lookup.c:523
> #15 0x00007feed02f0ba1 in vlib_cli_dispatch_sub_commands
> (vm=vm@entry=0x7feed05522c0 <vlib_global_main>, cm=cm@entry=0x7feed05524a0
> <vlib_global_main+480>, input=input@entry=0x7fee8f7facb0,
> parent_command_index=<optimized out>) at cli.c:588
> #16 0x00007feed02f0f57 in vlib_cli_dispatch_sub_commands
> (vm=vm@entry=0x7feed05522c0 <vlib_global_main>, cm=cm@entry=0x7feed05524a0
> <vlib_global_main+480>, input=input@entry=0x7fee8f7facb0,
> parent_command_index=parent_command_index@entry=0) at cli.c:566
> #17 0x00007feed02f1190 in vlib_cli_input (vm=vm@entry=0x7feed05522c0
> <vlib_global_main>, input=input@entry=0x7fee8f7facb0,
> function=function@entry=0x0, function_arg=function_arg@entry=0) at cli.c:662
> #18 0x00007feed032bc79 in unix_cli_exec (vm=0x7feed05522c0
> <vlib_global_main>, input=<optimized out>, cmd=<optimized out>) at cli.c:3002
> #19 0x00007feed02f0ba1 in vlib_cli_dispatch_sub_commands
> (vm=vm@entry=0x7feed05522c0 <vlib_global_main>, cm=cm@entry=0x7feed05524a0
> <vlib_global_main+480>, input=input@entry=0x7fee8f7faed0,
> parent_command_index=parent_command_index@entry=0) at cli.c:588
> #20 0x00007feed02f1190 in vlib_cli_input (vm=0x7feed05522c0
> <vlib_global_main>, input=input@entry=0x7fee8f7faed0,
> function=function@entry=0x7feed0332030 <unix_vlib_cli_output>,
> function_arg=function_arg@entry=0) at cli.c:662
> #21 0x00007feed033319b in unix_cli_process_input (cli_file_index=0,
> cm=0x7feed0552160 <unix_cli_main>) at cli.c:2308
> #22 0x00007feed0336c46 in unix_cli_process (vm=0x7feed05522c0
> <vlib_global_main>, rt=0x7fee8f7ea000, f=<optimized out>) at cli.c:2420
> #23 0x00007feed02fe856 in vlib_process_bootstrap (_a=<optimized out>) at
> main.c:1231
> #24 0x00007feecef57918 in clib_calljmp () at longjmp.S:110
> #25 0x00007fee9022bc20 in ?? ()
> #26 0x00007feed02ffb99 in vlib_process_startup (f=0x0, p=0x7fee8f7ea000,
> vm=0x7feed05522c0 <vlib_global_main>) at main.c:1253
> #27 dispatch_process (vm=0x7feed05522c0 <vlib_global_main>, p=0x7fee8f7ea000,
> last_time_stamp=0, f=0x0) at main.c:1296
> #28 0x0000000000000001 in ?? ()
> #29 0x0000000000000000 in ?? ()
> (gdb)
>
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