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authorDan Gudmundsson <[email protected]>2015-08-26 12:57:24 +0200
committerDan Gudmundsson <[email protected]>2015-08-26 12:57:24 +0200
commit5a8f1cb18b6dce3d489b4b77c5e7c82de716ae67 (patch)
treecbf839b5b1a51075276a0c9d5b1f2a3d389c5a65 /lib/mnesia/examples/bench/bench_generate.erl
parentb78c3b351fc955aa14bdfc3577890031ffffa9f0 (diff)
parentf940d1cc510b9eb86a2562f190825b17a31acee2 (diff)
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Merge branch 'dgud/mnesia/use_now_in_tests' into maint
* dgud/mnesia/use_now_in_tests: Remove erlang:now() and random usage in tests
Diffstat (limited to 'lib/mnesia/examples/bench/bench_generate.erl')
-rw-r--r--lib/mnesia/examples/bench/bench_generate.erl40
1 files changed, 18 insertions, 22 deletions
diff --git a/lib/mnesia/examples/bench/bench_generate.erl b/lib/mnesia/examples/bench/bench_generate.erl
index 7a701812a7..e838f07fbb 100644
--- a/lib/mnesia/examples/bench/bench_generate.erl
+++ b/lib/mnesia/examples/bench/bench_generate.erl
@@ -153,9 +153,7 @@ generator_init(Monitor, C) ->
process_flag(trap_exit, true),
Tables = mnesia:system_info(tables),
ok = mnesia:wait_for_tables(Tables, infinity),
- {_Mega, Sec, Micro} = erlang:now(),
- Uniq = lists:sum(binary_to_list(term_to_binary(make_ref()))),
- random:seed(Uniq, Sec, Micro),
+ rand:seed(exsplus),
Counters = reset_counters(C, C#config.statistics_detail),
SessionTab = ets:new(bench_sessions, [public, {keypos, 1}]),
generator_loop(Monitor, C, SessionTab, Counters).
@@ -189,9 +187,9 @@ generator_loop(Monitor, C, SessionTab, Counters) ->
after 0 ->
{Name, {Nodes, Activity, Wlock}, Fun, CommitSessions} =
gen_trans(C, SessionTab),
- Before = erlang:now(),
+ Before = erlang:monotonic_time(),
Res = call_worker(Nodes, Activity, Fun, Wlock, mnesia_frag),
- After = erlang:now(),
+ After = erlang:monotonic_time(),
Elapsed = elapsed(Before, After),
post_eval(Monitor, C, Elapsed, Res, Name, CommitSessions, SessionTab, Counters)
end.
@@ -253,10 +251,8 @@ worker_loop(Parent) ->
end.
-elapsed({Before1, Before2, Before3}, {After1, After2, After3}) ->
- After = After1 * 1000000000000 + After2 * 1000000 + After3,
- Before = Before1 * 1000000000000 + Before2 * 1000000 + Before3,
- After - Before.
+elapsed(Before, After) ->
+ erlang:convert_time_unit(After-Before, native, micro_seconds).
%% Lookup counters
get_counters(_C, {table, Tab}) ->
@@ -351,7 +347,7 @@ commit_session(Fun) when is_function(Fun, 0) ->
%% Randlomly choose a transaction type according to benchmar spec
gen_trans(C, SessionTab) when C#config.generator_profile == random ->
- case random:uniform(100) of
+ case rand:uniform(100) of
Rand when Rand > 0, Rand =< 25 -> gen_t1(C, SessionTab);
Rand when Rand > 25, Rand =< 50 -> gen_t2(C, SessionTab);
Rand when Rand > 50, Rand =< 70 -> gen_t3(C, SessionTab);
@@ -369,7 +365,7 @@ gen_trans(C, SessionTab) ->
end.
gen_t1(C, _SessionTab) ->
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
SubscrKey = bench_trans:number_to_key(SubscrId, C),
Location = 4711,
ChangedBy = <<4711:(8*25)>>,
@@ -381,7 +377,7 @@ gen_t1(C, _SessionTab) ->
}.
gen_t2(C, _SessionTab) ->
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
SubscrKey = bench_trans:number_to_key(SubscrId, C),
{t2,
nearest_node(SubscrId, sync_dirty, C),
@@ -395,9 +391,9 @@ gen_t3(C, SessionTab) ->
'$end_of_table' ->
%% This generator does not have any session,
%% try reading someone elses session details
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
SubscrKey = bench_trans:number_to_key(SubscrId, C),
- ServerId = random:uniform(C#config.n_servers) - 1,
+ ServerId = rand:uniform(C#config.n_servers) - 1,
ServerBit = 1 bsl ServerId,
{t3,
nearest_node(SubscrId, transaction, C),
@@ -419,12 +415,12 @@ gen_t4(C, SessionTab) ->
%% This generator may already have sessions,
%% create a new session and hope that no other
%% generator already has occupied it
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
SubscrKey = bench_trans:number_to_key(SubscrId, C),
- ServerId = random:uniform(C#config.n_servers) - 1,
+ ServerId = rand:uniform(C#config.n_servers) - 1,
ServerBit = 1 bsl ServerId,
Details = <<4711:(8*2000)>>,
- DoRollback = (random:uniform(100) =< 2),
+ DoRollback = (rand:uniform(100) =< 2),
Insert = fun() -> ets:insert(SessionTab, {{SubscrId, SubscrKey, ServerId}, self()}) end,
{t4,
nearest_node(SubscrId, transaction, C),
@@ -437,11 +433,11 @@ gen_t5(C, SessionTab) ->
'$end_of_table' ->
%% This generator does not have any session,
%% try to delete someone elses session details
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
SubscrKey = bench_trans:number_to_key(SubscrId, C),
- ServerId = random:uniform(C#config.n_servers) - 1,
+ ServerId = rand:uniform(C#config.n_servers) - 1,
ServerBit = 1 bsl ServerId,
- DoRollback = (random:uniform(100) =< 2),
+ DoRollback = (rand:uniform(100) =< 2),
{t5,
nearest_node(SubscrId, transaction, C),
fun(Wlock) -> bench_trans:delete_session_from_server(Wlock, SubscrKey, ServerBit, ServerId, DoRollback) end,
@@ -451,7 +447,7 @@ gen_t5(C, SessionTab) ->
%% This generator do have at least one session,
%% delete it.
ServerBit = 1 bsl ServerId,
- DoRollback = (random:uniform(100) =< 2),
+ DoRollback = (rand:uniform(100) =< 2),
Delete = fun() -> ets:delete(SessionTab, {SubscrId, SubscrKey, ServerId}) end,
{t5,
nearest_node(SubscrId, transaction, C),
@@ -461,7 +457,7 @@ gen_t5(C, SessionTab) ->
end.
gen_ping(C, _SessionTab) ->
- SubscrId = random:uniform(C#config.n_subscribers) - 1,
+ SubscrId = rand:uniform(C#config.n_subscribers) - 1,
{ping,
nearest_node(SubscrId, transaction, C),
fun(_Wlock) -> {do_commit, true, []} end,