Difference between revisions of "VPP/AArch64"

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Line 45: Line 45:
 
* SIMD
 
* SIMD
 
* quad loop / dual loop optimizations e.g. l2_forward() - hide memory latency
 
* quad loop / dual loop optimizations e.g. l2_forward() - hide memory latency
 
== CSIT ==
 
  
 
== Patches ==
 
== Patches ==

Revision as of 20:57, 17 October 2017

Unit tests

make test-debug status: ?

make test-all-debug status: ?

make test status:

infinite loop:

  • TestLB.test_lb_ip4_gre4
  • TestLB.test_lb_ip4_gre6
  • TestLB.test_lb_ip6_gre4
  • TestLB.test_lb_ip6_gre6

fail:

  • TestIp4VrfMultiInst.test_ip4_vrf_02
  • TestIP6VrfMultiInst.test_ip6_vrf_02
  • TestIPv4FibCrud.test_2_del_routes
  • TestIPv4FibCrud.test_3_add_new_routes
  • TestJVpp.test_vpp_ioamtrace_future_api
  • TestJVpp.test_vpp_snat_future_api
  • TestL2bdArpTerm.test_l2bd_arp_term_02
  • TestL2bdArpTerm.test_l2bd_arp_term_04
  • TestL2bdArpTerm.test_l2bd_arp_term_10
  • TestL2bdArpTerm.test_l2bd_arp_term_11
  • TestL2bdArpTerm.test_l2bd_arp_term_13
  • TestL2bdArpTerm.test_l2bd_arp_term_14
  • TestL2bdMultiInst.test_l2bd_inst_02
  • TestL2bdMultiInst.test_l2bd_inst_03
  • TestL2fib.test_l2_fib_02
  • TestL2fib.test_l2_fib_04

make test-all status: ?

TODO

  • src/vppinfra/cache.h - aarch64 is always 128B cache block size
  • src/vppinfra/cpu.[ch] - need ARM feature detection & "show cpu" output
  • src/vppinfra/time.[ch] - review ARM architected timer / use cntfrq_el0 instead of estimation
  • src/vppinfra/smp.h - use "isb" or "yield" inst
  • src/vppinfra/byte_order.h - use "rev" inst
  • review __sync use for non-x86/TSO machines; "TCP shared-memory fifos, event logger, etc."
  • bihash_8_8.h - crc32 vs xxhash
  • string.h - memcpy (inlined by compiler) perf
  • SIMD
  • quad loop / dual loop optimizations e.g. l2_forward() - hide memory latency

Patches

lb plugin - fix format() type mismatches Merged 10/16 https://gerrit.fd.io/r/#/c/8755/
Use AESNI=y only on x86_64 machines Merged 10/14 https://gerrit.fd.io/r/#/c/8622/
Improved arm64 chip detection Merged 9/11 https://gerrit.fd.io/r/#/c/8372/
Native arm64 build: dpdk/Makefile change Merged 8/31 https://gerrit.fd.io/r/#/c/8228/

Known Issues

GCC 5.3.x ICEs during FP register allocation. Please use GCC 5.4+.