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authorDave Barach <dave@barachs.net>2018-02-22 09:48:45 -0500
committerFlorin Coras <florin.coras@gmail.com>2018-02-22 19:12:48 +0000
commit97f5af01808b1987df66d0f1c7a48bb413a4ef48 (patch)
tree6c9c152d3604393a6dc5e6094318e46200850372 /src/vnet/fib
parentcae7134a8c23b2ae3bb742b12789e5572aabf73d (diff)
bihash table size perf/scale improvements
Directly allocate and carve cache-line-aligned chunks of virtual memory. To a first approximation, bihash wasn't using clib_mem_free(...). We eliminate mheap object header/trailers, which improves space efficiency. We also eliminate the 4gb bihash table size limit. An 8_8 bihash w/ 100 million random entries uses 3.8 Gbytes. Change-Id: Icf925fdf99bce7d6ac407ac4edd30560b8f04808 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/fib')
-rw-r--r--src/vnet/fib/ip6_fib.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/src/vnet/fib/ip6_fib.c b/src/vnet/fib/ip6_fib.c
index bb092cea1bf..9f58e4b6a9e 100644
--- a/src/vnet/fib/ip6_fib.c
+++ b/src/vnet/fib/ip6_fib.c
@@ -600,12 +600,20 @@ ip6_fib_table_show_one (ip6_fib_t *fib,
u8 *
format_ip6_fib_table_memory (u8 * s, va_list * args)
{
+ uword bytes_inuse;
+
+ bytes_inuse =
+ ip6_main.ip6_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash.alloc_arena_next
+ - ip6_main.ip6_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash.alloc_arena;
+
+ bytes_inuse +=
+ ip6_main.ip6_table[IP6_FIB_TABLE_FWDING].ip6_hash.alloc_arena_next
+ - ip6_main.ip6_table[IP6_FIB_TABLE_FWDING].ip6_hash.alloc_arena;
+
s = format(s, "%=30s %=6d %=8ld\n",
"IPv6 unicast",
pool_elts(ip6_main.fibs),
- mheap_bytes(ip6_main.ip6_table[IP6_FIB_TABLE_NON_FWDING].ip6_hash.mheap) +
- mheap_bytes(ip6_main.ip6_table[IP6_FIB_TABLE_FWDING].ip6_hash.mheap));
-
+ bytes_inuse);
return (s);
}