Yes, it’s possible. This is not the obvious way to do it. Before I answer any questions: what are you trying to accomplish? Idiomatic vpp coding techniques typically don’t result in enough memory allocator traffic to make it worth using per-thread heaps.
D. From: vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of Saeed P Sent: Wednesday, January 24, 2018 12:53 AM To: vpp-dev@lists.fd.io Subject: [vpp-dev] heap per thread Hi I tried to change the memory allocation on VPP to set different mheap per worker not a shared mheap per worker. so on /vlib/threads.c at start_workers function chang as follow : if ( !strcmp( tr->name , "workers") ) { tr->mheap_size = new_mheap_size ; } vec_add2 (vlib_worker_threads, w, 1); if (tr->mheap_size) w->thread_mheap = mheap_alloc (0 , tr->mheap_size); else w->thread_mheap = main_heap; by default the "tr->mheap_size" is zero so go into else and use the main_heap but now allocate mheap for workers, but it has coredump as GDB shows: Thread 1 "vpp_main" received signal SIGSEGV, Segmentation fault. mheap_get_search_free_bin (align_offset=4, align=<optimized out>, n_user_data_bytes_arg=<synthetic pointer>, bin=11, v=0x7fffb5bdd000) at /root/CGNAT/build-data/../src/vppinfra/mheap.c:401 401 uword this_object_n_user_data_bytes = mheap_elt_data_bytes (e); Is it possible to set different mheap per worker ? Thanks, -Saeed
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