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Add IPv4 fib lookup performance tests with uniform keys.

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Submitted by:	zec
MFC after:	1 week
This commit is contained in:
Alexander V. Chernikov 2021-03-30 13:43:55 +01:00
parent 75e67b4920
commit b8598e2ff6
1 changed files with 52 additions and 0 deletions
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52
sys/tests/fib_lookup/fib_lookup.c
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@ -505,6 +505,58 @@ SYSCTL_PROC(_net_route_test, OID_AUTO, run_inet_scan,
CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
0, 0, run_test_inet_scan, "I", "Execute fib4_lookup scan tests");
static int
rnd_lps(SYSCTL_HANDLER_ARGS)
{
struct epoch_tracker et;
struct in_addr *keys;
struct nhop_object **nhops;
struct timespec ts_pre, ts_post;
uint64_t total_diff, lps;
int error;
int count = 0;
error = sysctl_handle_int(oidp, &count, 0, req);
if (error != 0)
return (error);
if (count <= 0)
return (0);
keys = malloc(sizeof(*keys) * count, M_TEMP, M_NOWAIT);
nhops = malloc(sizeof(*nhops) * count, M_TEMP, M_NOWAIT);
if (keys == NULL || nhops == NULL) {
free(keys, M_TEMP);
free(nhops, M_TEMP);
return (ENOMEM);
}
printf("Preparing %d random keys...\n", count);
arc4random_buf(keys, sizeof(*keys) * count);
printf("Starting LPS test...\n");
NET_EPOCH_ENTER(et);
nanouptime(&ts_pre);
for (int i = 0; i < count; i++)
nhops[i] = fib4_lookup(RT_DEFAULT_FIB, keys[i], 0, NHR_NONE, 0);
nanouptime(&ts_post);
NET_EPOCH_EXIT(et);
free(keys, M_TEMP);
free(nhops, M_TEMP);
total_diff = (ts_post.tv_sec - ts_pre.tv_sec) * 1000000000 +
(ts_post.tv_nsec - ts_pre.tv_nsec);
lps = 1000000000ULL * count / total_diff;
printf("%d lookups in %zu nanoseconds, %lu.%06lu MLPS\n",
count, total_diff, lps / 1000000, lps % 1000000);
return (0);
}
SYSCTL_PROC(_net_route_test, OID_AUTO, rnd_lps,
CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
0, 0, rnd_lps, "I",
"Measure lookups per second using uniformly random keys");
static int
test_fib_lookup_modevent(module_t mod, int type, void *unused)