22/09/2026 17:52, Stephen Hemminger: > Memzone names are limited to 31 characters, and ring, mempool and > stack names lose the length of their prefixes on top of that. > A mempool name is limited to 25 characters, which leaves little room > for libraries such as rib and fib that derive names from the name > given by the application. > > Increase RTE_MEMZONE_NAMESIZE to 64. The derived ring, mempool, > stack and RCU defer queue sizes follow. > > Reorder struct rte_ring and struct rte_mempool so the larger name > does not push datapath fields into another cache line. > > For rte_ring, flags and the size fields come first, followed by the > memzone pointer and the name. The cache alignment moves from the > first field to the structure itself. struct rte_ring grows by one > cache line. > > For rte_mempool the fields used in the datapath are gathered at the > start: pool_data/pool_id, local_cache, ops_index and cache_size. > The remaining fields, along with pool_config, mz and name, follow. > Previously local_cache and ops_index were in the second cache line. > struct rte_mempool stays 192 bytes. > > Signed-off-by: Stephen Hemminger <[email protected]> > --- > doc/guides/rel_notes/release_26_11.rst | 21 +++++++++++++++++++ > lib/eal/include/rte_memzone.h | 2 +- > lib/mempool/rte_mempool.h | 29 +++++++++++++------------- > lib/ring/rte_ring_core.h | 9 ++++---- > 4 files changed, 41 insertions(+), 20 deletions(-)
Please rebase on top of mempool changes in main.
