| /* |
| * Throttle infrastructure tests |
| * |
| * Copyright Nodalink, EURL. 2013-2014 |
| * Copyright Igalia, S.L. 2015 |
| * |
| * Authors: |
| * Benoît Canet <benoit.canet@nodalink.com> |
| * Alberto Garcia <berto@igalia.com> |
| * |
| * This work is licensed under the terms of the GNU LGPL, version 2 or later. |
| * See the COPYING.LIB file in the top-level directory. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include <math.h> |
| #include "block/aio.h" |
| #include "qapi/error.h" |
| #include "qemu/throttle.h" |
| #include "qemu/error-report.h" |
| #include "qemu/main-loop.h" |
| #include "qemu/module.h" |
| #include "block/throttle-groups.h" |
| #include "sysemu/block-backend.h" |
| |
| static AioContext *ctx; |
| static LeakyBucket bkt; |
| static ThrottleConfig cfg; |
| static ThrottleGroupMember tgm; |
| static ThrottleState ts; |
| static ThrottleTimers *tt; |
| |
| /* useful function */ |
| static bool double_cmp(double x, double y) |
| { |
| return fabsl(x - y) < 1e-6; |
| } |
| |
| /* tests for single bucket operations */ |
| static void test_leak_bucket(void) |
| { |
| throttle_config_init(&cfg); |
| bkt = cfg.buckets[THROTTLE_BPS_TOTAL]; |
| |
| /* set initial value */ |
| bkt.avg = 150; |
| bkt.max = 15; |
| bkt.level = 1.5; |
| |
| /* leak an op work of time */ |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 150); |
| g_assert(bkt.avg == 150); |
| g_assert(bkt.max == 15); |
| g_assert(double_cmp(bkt.level, 0.5)); |
| |
| /* leak again emptying the bucket */ |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 150); |
| g_assert(bkt.avg == 150); |
| g_assert(bkt.max == 15); |
| g_assert(double_cmp(bkt.level, 0)); |
| |
| /* check that the bucket level won't go lower */ |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 150); |
| g_assert(bkt.avg == 150); |
| g_assert(bkt.max == 15); |
| g_assert(double_cmp(bkt.level, 0)); |
| |
| /* check that burst_level leaks correctly */ |
| bkt.burst_level = 6; |
| bkt.max = 250; |
| bkt.burst_length = 2; /* otherwise burst_level will not leak */ |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100); |
| g_assert(double_cmp(bkt.burst_level, 3.5)); |
| |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100); |
| g_assert(double_cmp(bkt.burst_level, 1)); |
| |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100); |
| g_assert(double_cmp(bkt.burst_level, 0)); |
| |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100); |
| g_assert(double_cmp(bkt.burst_level, 0)); |
| } |
| |
| static void test_compute_wait(void) |
| { |
| unsigned i; |
| int64_t wait; |
| int64_t result; |
| |
| throttle_config_init(&cfg); |
| bkt = cfg.buckets[THROTTLE_BPS_TOTAL]; |
| |
| /* no operation limit set */ |
| bkt.avg = 0; |
| bkt.max = 15; |
| bkt.level = 1.5; |
| wait = throttle_compute_wait(&bkt); |
| g_assert(!wait); |
| |
| /* zero delta */ |
| bkt.avg = 150; |
| bkt.max = 15; |
| bkt.level = 15; |
| wait = throttle_compute_wait(&bkt); |
| g_assert(!wait); |
| |
| /* below zero delta */ |
| bkt.avg = 150; |
| bkt.max = 15; |
| bkt.level = 9; |
| wait = throttle_compute_wait(&bkt); |
| g_assert(!wait); |
| |
| /* half an operation above max */ |
| bkt.avg = 150; |
| bkt.max = 15; |
| bkt.level = 15.5; |
| wait = throttle_compute_wait(&bkt); |
| /* time required to do half an operation */ |
| result = (int64_t) NANOSECONDS_PER_SECOND / 150 / 2; |
| g_assert(wait == result); |
| |
| /* Perform I/O for 2.2 seconds at a rate of bkt.max */ |
| bkt.burst_length = 2; |
| bkt.level = 0; |
| bkt.avg = 10; |
| bkt.max = 200; |
| for (i = 0; i < 22; i++) { |
| double units = bkt.max / 10; |
| bkt.level += units; |
| bkt.burst_level += units; |
| throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 10); |
| wait = throttle_compute_wait(&bkt); |
| g_assert(double_cmp(bkt.burst_level, 0)); |
| g_assert(double_cmp(bkt.level, (i + 1) * (bkt.max - bkt.avg) / 10)); |
| /* We can do bursts for the 2 seconds we have configured in |
| * burst_length. We have 100 extra milliseconds of burst |
| * because bkt.level has been leaking during this time. |
| * After that, we have to wait. */ |
| result = i < 21 ? 0 : 1.8 * NANOSECONDS_PER_SECOND; |
| g_assert(wait == result); |
| } |
| } |
| |
| /* functions to test ThrottleState initialization/destroy methods */ |
| static void read_timer_cb(void *opaque) |
| { |
| } |
| |
| static void write_timer_cb(void *opaque) |
| { |
| } |
| |
| static void test_init(void) |
| { |
| int i; |
| |
| tt = &tgm.throttle_timers; |
| |
| /* fill the structures with crap */ |
| memset(&ts, 1, sizeof(ts)); |
| memset(tt, 1, sizeof(*tt)); |
| |
| /* init structures */ |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| |
| /* check initialized fields */ |
| g_assert(tt->clock_type == QEMU_CLOCK_VIRTUAL); |
| g_assert(tt->timers[THROTTLE_READ]); |
| g_assert(tt->timers[THROTTLE_WRITE]); |
| |
| /* check other fields where cleared */ |
| g_assert(!ts.previous_leak); |
| g_assert(!ts.cfg.op_size); |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| g_assert(!ts.cfg.buckets[i].avg); |
| g_assert(!ts.cfg.buckets[i].max); |
| g_assert(!ts.cfg.buckets[i].level); |
| } |
| |
| throttle_timers_destroy(tt); |
| } |
| |
| static void test_init_readonly(void) |
| { |
| int i; |
| |
| tt = &tgm.throttle_timers; |
| |
| /* fill the structures with crap */ |
| memset(&ts, 1, sizeof(ts)); |
| memset(tt, 1, sizeof(*tt)); |
| |
| /* init structures */ |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, NULL, &ts); |
| |
| /* check initialized fields */ |
| g_assert(tt->clock_type == QEMU_CLOCK_VIRTUAL); |
| g_assert(tt->timers[THROTTLE_READ]); |
| g_assert(!tt->timers[THROTTLE_WRITE]); |
| |
| /* check other fields where cleared */ |
| g_assert(!ts.previous_leak); |
| g_assert(!ts.cfg.op_size); |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| g_assert(!ts.cfg.buckets[i].avg); |
| g_assert(!ts.cfg.buckets[i].max); |
| g_assert(!ts.cfg.buckets[i].level); |
| } |
| |
| throttle_timers_destroy(tt); |
| } |
| |
| static void test_init_writeonly(void) |
| { |
| int i; |
| |
| tt = &tgm.throttle_timers; |
| |
| /* fill the structures with crap */ |
| memset(&ts, 1, sizeof(ts)); |
| memset(tt, 1, sizeof(*tt)); |
| |
| /* init structures */ |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| NULL, write_timer_cb, &ts); |
| |
| /* check initialized fields */ |
| g_assert(tt->clock_type == QEMU_CLOCK_VIRTUAL); |
| g_assert(!tt->timers[THROTTLE_READ]); |
| g_assert(tt->timers[THROTTLE_WRITE]); |
| |
| /* check other fields where cleared */ |
| g_assert(!ts.previous_leak); |
| g_assert(!ts.cfg.op_size); |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| g_assert(!ts.cfg.buckets[i].avg); |
| g_assert(!ts.cfg.buckets[i].max); |
| g_assert(!ts.cfg.buckets[i].level); |
| } |
| |
| throttle_timers_destroy(tt); |
| } |
| |
| static void test_destroy(void) |
| { |
| int i; |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| throttle_timers_destroy(tt); |
| for (i = 0; i < THROTTLE_MAX; i++) { |
| g_assert(!tt->timers[i]); |
| } |
| } |
| |
| /* function to test throttle_config and throttle_get_config */ |
| static void test_config_functions(void) |
| { |
| int i; |
| ThrottleConfig orig_cfg, final_cfg; |
| |
| orig_cfg.buckets[THROTTLE_BPS_TOTAL].avg = 153; |
| orig_cfg.buckets[THROTTLE_BPS_READ].avg = 56; |
| orig_cfg.buckets[THROTTLE_BPS_WRITE].avg = 1; |
| |
| orig_cfg.buckets[THROTTLE_OPS_TOTAL].avg = 150; |
| orig_cfg.buckets[THROTTLE_OPS_READ].avg = 69; |
| orig_cfg.buckets[THROTTLE_OPS_WRITE].avg = 23; |
| |
| orig_cfg.buckets[THROTTLE_BPS_TOTAL].max = 0; |
| orig_cfg.buckets[THROTTLE_BPS_READ].max = 56; |
| orig_cfg.buckets[THROTTLE_BPS_WRITE].max = 120; |
| |
| orig_cfg.buckets[THROTTLE_OPS_TOTAL].max = 150; |
| orig_cfg.buckets[THROTTLE_OPS_READ].max = 400; |
| orig_cfg.buckets[THROTTLE_OPS_WRITE].max = 500; |
| |
| orig_cfg.buckets[THROTTLE_BPS_TOTAL].level = 45; |
| orig_cfg.buckets[THROTTLE_BPS_READ].level = 65; |
| orig_cfg.buckets[THROTTLE_BPS_WRITE].level = 23; |
| |
| orig_cfg.buckets[THROTTLE_OPS_TOTAL].level = 1; |
| orig_cfg.buckets[THROTTLE_OPS_READ].level = 90; |
| orig_cfg.buckets[THROTTLE_OPS_WRITE].level = 75; |
| |
| orig_cfg.op_size = 1; |
| |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| /* structure reset by throttle_init previous_leak should be null */ |
| g_assert(!ts.previous_leak); |
| throttle_config(&ts, QEMU_CLOCK_VIRTUAL, &orig_cfg); |
| |
| /* has previous leak been initialized by throttle_config ? */ |
| g_assert(ts.previous_leak); |
| |
| /* get back the fixed configuration */ |
| throttle_get_config(&ts, &final_cfg); |
| |
| throttle_timers_destroy(tt); |
| |
| g_assert(final_cfg.buckets[THROTTLE_BPS_TOTAL].avg == 153); |
| g_assert(final_cfg.buckets[THROTTLE_BPS_READ].avg == 56); |
| g_assert(final_cfg.buckets[THROTTLE_BPS_WRITE].avg == 1); |
| |
| g_assert(final_cfg.buckets[THROTTLE_OPS_TOTAL].avg == 150); |
| g_assert(final_cfg.buckets[THROTTLE_OPS_READ].avg == 69); |
| g_assert(final_cfg.buckets[THROTTLE_OPS_WRITE].avg == 23); |
| |
| g_assert(final_cfg.buckets[THROTTLE_BPS_TOTAL].max == 0); |
| g_assert(final_cfg.buckets[THROTTLE_BPS_READ].max == 56); |
| g_assert(final_cfg.buckets[THROTTLE_BPS_WRITE].max == 120); |
| |
| g_assert(final_cfg.buckets[THROTTLE_OPS_TOTAL].max == 150); |
| g_assert(final_cfg.buckets[THROTTLE_OPS_READ].max == 400); |
| g_assert(final_cfg.buckets[THROTTLE_OPS_WRITE].max == 500); |
| |
| g_assert(final_cfg.op_size == 1); |
| |
| /* check bucket have been cleared */ |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| g_assert(!final_cfg.buckets[i].level); |
| } |
| } |
| |
| /* functions to test is throttle is enabled by a config */ |
| static void set_cfg_value(bool is_max, int index, int value) |
| { |
| if (is_max) { |
| cfg.buckets[index].max = value; |
| /* If max is set, avg should never be 0 */ |
| cfg.buckets[index].avg = MAX(cfg.buckets[index].avg, 1); |
| } else { |
| cfg.buckets[index].avg = value; |
| } |
| } |
| |
| static void test_enabled(void) |
| { |
| int i; |
| |
| throttle_config_init(&cfg); |
| g_assert(!throttle_enabled(&cfg)); |
| |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| throttle_config_init(&cfg); |
| set_cfg_value(false, i, 150); |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| g_assert(throttle_enabled(&cfg)); |
| } |
| |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| throttle_config_init(&cfg); |
| set_cfg_value(false, i, -150); |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| } |
| } |
| |
| /* tests functions for throttle_conflicting */ |
| |
| static void test_conflicts_for_one_set(bool is_max, |
| int total, |
| int read, |
| int write) |
| { |
| throttle_config_init(&cfg); |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| set_cfg_value(is_max, total, 1); |
| set_cfg_value(is_max, read, 1); |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| throttle_config_init(&cfg); |
| set_cfg_value(is_max, total, 1); |
| set_cfg_value(is_max, write, 1); |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| throttle_config_init(&cfg); |
| set_cfg_value(is_max, total, 1); |
| set_cfg_value(is_max, read, 1); |
| set_cfg_value(is_max, write, 1); |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| throttle_config_init(&cfg); |
| set_cfg_value(is_max, total, 1); |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| throttle_config_init(&cfg); |
| set_cfg_value(is_max, read, 1); |
| set_cfg_value(is_max, write, 1); |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| } |
| |
| static void test_conflicting_config(void) |
| { |
| /* bps average conflicts */ |
| test_conflicts_for_one_set(false, |
| THROTTLE_BPS_TOTAL, |
| THROTTLE_BPS_READ, |
| THROTTLE_BPS_WRITE); |
| |
| /* ops average conflicts */ |
| test_conflicts_for_one_set(false, |
| THROTTLE_OPS_TOTAL, |
| THROTTLE_OPS_READ, |
| THROTTLE_OPS_WRITE); |
| |
| /* bps average conflicts */ |
| test_conflicts_for_one_set(true, |
| THROTTLE_BPS_TOTAL, |
| THROTTLE_BPS_READ, |
| THROTTLE_BPS_WRITE); |
| /* ops average conflicts */ |
| test_conflicts_for_one_set(true, |
| THROTTLE_OPS_TOTAL, |
| THROTTLE_OPS_READ, |
| THROTTLE_OPS_WRITE); |
| } |
| /* functions to test the throttle_is_valid function */ |
| static void test_is_valid_for_value(int value, bool should_be_valid) |
| { |
| int is_max, index; |
| for (is_max = 0; is_max < 2; is_max++) { |
| for (index = 0; index < BUCKETS_COUNT; index++) { |
| throttle_config_init(&cfg); |
| set_cfg_value(is_max, index, value); |
| g_assert(throttle_is_valid(&cfg, NULL) == should_be_valid); |
| } |
| } |
| } |
| |
| static void test_is_valid(void) |
| { |
| /* negative numbesr are invalid */ |
| test_is_valid_for_value(-1, false); |
| /* zero is valid */ |
| test_is_valid_for_value(0, true); |
| /* positives numbers are valid */ |
| test_is_valid_for_value(1, true); |
| } |
| |
| static void test_ranges(void) |
| { |
| int i; |
| |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| LeakyBucket *b = &cfg.buckets[i]; |
| throttle_config_init(&cfg); |
| |
| /* avg = 0 means throttling is disabled, but the config is valid */ |
| b->avg = 0; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| g_assert(!throttle_enabled(&cfg)); |
| |
| /* These are valid configurations (values <= THROTTLE_VALUE_MAX) */ |
| b->avg = 1; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = THROTTLE_VALUE_MAX; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = THROTTLE_VALUE_MAX; |
| b->max = THROTTLE_VALUE_MAX; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| /* Values over THROTTLE_VALUE_MAX are not allowed */ |
| b->avg = THROTTLE_VALUE_MAX + 1; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = THROTTLE_VALUE_MAX; |
| b->max = THROTTLE_VALUE_MAX + 1; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| /* burst_length must be between 1 and THROTTLE_VALUE_MAX */ |
| b->avg = 1; |
| b->max = 1; |
| b->burst_length = 0; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = 1; |
| b->burst_length = 1; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = 1; |
| b->burst_length = THROTTLE_VALUE_MAX; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = 1; |
| b->burst_length = THROTTLE_VALUE_MAX + 1; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| /* burst_length * max cannot exceed THROTTLE_VALUE_MAX */ |
| b->avg = 1; |
| b->max = 2; |
| b->burst_length = THROTTLE_VALUE_MAX / 2; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = 3; |
| b->burst_length = THROTTLE_VALUE_MAX / 2; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = THROTTLE_VALUE_MAX; |
| b->burst_length = 1; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| b->avg = 1; |
| b->max = THROTTLE_VALUE_MAX; |
| b->burst_length = 2; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| } |
| } |
| |
| static void test_max_is_missing_limit(void) |
| { |
| int i; |
| |
| for (i = 0; i < BUCKETS_COUNT; i++) { |
| throttle_config_init(&cfg); |
| cfg.buckets[i].max = 100; |
| cfg.buckets[i].avg = 0; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| cfg.buckets[i].max = 0; |
| cfg.buckets[i].avg = 0; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| cfg.buckets[i].max = 0; |
| cfg.buckets[i].avg = 100; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| |
| cfg.buckets[i].max = 30; |
| cfg.buckets[i].avg = 100; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| |
| cfg.buckets[i].max = 100; |
| cfg.buckets[i].avg = 100; |
| g_assert(throttle_is_valid(&cfg, NULL)); |
| } |
| } |
| |
| static void test_iops_size_is_missing_limit(void) |
| { |
| /* A total/read/write iops limit is required */ |
| throttle_config_init(&cfg); |
| cfg.op_size = 4096; |
| g_assert(!throttle_is_valid(&cfg, NULL)); |
| } |
| |
| static void test_have_timer(void) |
| { |
| /* zero structures */ |
| memset(&ts, 0, sizeof(ts)); |
| memset(tt, 0, sizeof(*tt)); |
| |
| /* no timer set should return false */ |
| g_assert(!throttle_timers_are_initialized(tt)); |
| |
| /* init structures */ |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| |
| /* timer set by init should return true */ |
| g_assert(throttle_timers_are_initialized(tt)); |
| |
| throttle_timers_destroy(tt); |
| } |
| |
| static void test_detach_attach(void) |
| { |
| /* zero structures */ |
| memset(&ts, 0, sizeof(ts)); |
| memset(tt, 0, sizeof(*tt)); |
| |
| /* init the structure */ |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| |
| /* timer set by init should return true */ |
| g_assert(throttle_timers_are_initialized(tt)); |
| |
| /* timer should no longer exist after detaching */ |
| throttle_timers_detach_aio_context(tt); |
| g_assert(!throttle_timers_are_initialized(tt)); |
| |
| /* timer should exist again after attaching */ |
| throttle_timers_attach_aio_context(tt, ctx); |
| g_assert(throttle_timers_are_initialized(tt)); |
| |
| throttle_timers_destroy(tt); |
| } |
| |
| static bool do_test_accounting(bool is_ops, /* are we testing bps or ops */ |
| int size, /* size of the operation to do */ |
| double avg, /* io limit */ |
| uint64_t op_size, /* ideal size of an io */ |
| double total_result, |
| double read_result, |
| double write_result) |
| { |
| BucketType to_test[2][3] = { { THROTTLE_BPS_TOTAL, |
| THROTTLE_BPS_READ, |
| THROTTLE_BPS_WRITE, }, |
| { THROTTLE_OPS_TOTAL, |
| THROTTLE_OPS_READ, |
| THROTTLE_OPS_WRITE, } }; |
| BucketType index; |
| int i; |
| |
| throttle_config_init(&cfg); |
| |
| for (i = 0; i < 3; i++) { |
| index = to_test[is_ops][i]; |
| cfg.buckets[index].avg = avg; |
| } |
| |
| cfg.op_size = op_size; |
| |
| throttle_init(&ts); |
| throttle_timers_init(tt, ctx, QEMU_CLOCK_VIRTUAL, |
| read_timer_cb, write_timer_cb, &ts); |
| throttle_config(&ts, QEMU_CLOCK_VIRTUAL, &cfg); |
| |
| /* account a read */ |
| throttle_account(&ts, THROTTLE_READ, size); |
| /* account a write */ |
| throttle_account(&ts, THROTTLE_WRITE, size); |
| |
| /* check total result */ |
| index = to_test[is_ops][0]; |
| if (!double_cmp(ts.cfg.buckets[index].level, total_result)) { |
| return false; |
| } |
| |
| /* check read result */ |
| index = to_test[is_ops][1]; |
| if (!double_cmp(ts.cfg.buckets[index].level, read_result)) { |
| return false; |
| } |
| |
| /* check write result */ |
| index = to_test[is_ops][2]; |
| if (!double_cmp(ts.cfg.buckets[index].level, write_result)) { |
| return false; |
| } |
| |
| throttle_timers_destroy(tt); |
| |
| return true; |
| } |
| |
| static void test_accounting(void) |
| { |
| /* tests for bps */ |
| |
| /* op of size 1 */ |
| g_assert(do_test_accounting(false, |
| 1 * 512, |
| 150, |
| 0, |
| 1024, |
| 512, |
| 512)); |
| |
| /* op of size 2 */ |
| g_assert(do_test_accounting(false, |
| 2 * 512, |
| 150, |
| 0, |
| 2048, |
| 1024, |
| 1024)); |
| |
| /* op of size 2 and orthogonal parameter change */ |
| g_assert(do_test_accounting(false, |
| 2 * 512, |
| 150, |
| 17, |
| 2048, |
| 1024, |
| 1024)); |
| |
| |
| /* tests for ops */ |
| |
| /* op of size 1 */ |
| g_assert(do_test_accounting(true, |
| 1 * 512, |
| 150, |
| 0, |
| 2, |
| 1, |
| 1)); |
| |
| /* op of size 2 */ |
| g_assert(do_test_accounting(true, |
| 2 * 512, |
| 150, |
| 0, |
| 2, |
| 1, |
| 1)); |
| |
| /* jumbo op accounting fragmentation : size 64 with op size of 13 units */ |
| g_assert(do_test_accounting(true, |
| 64 * 512, |
| 150, |
| 13 * 512, |
| (64.0 * 2) / 13, |
| (64.0 / 13), |
| (64.0 / 13))); |
| |
| /* same with orthogonal parameters changes */ |
| g_assert(do_test_accounting(true, |
| 64 * 512, |
| 300, |
| 13 * 512, |
| (64.0 * 2) / 13, |
| (64.0 / 13), |
| (64.0 / 13))); |
| } |
| |
| static void test_groups(void) |
| { |
| ThrottleConfig cfg1, cfg2; |
| BlockBackend *blk1, *blk2, *blk3; |
| BlockBackendPublic *blkp1, *blkp2, *blkp3; |
| ThrottleGroupMember *tgm1, *tgm2, *tgm3; |
| |
| /* No actual I/O is performed on these devices */ |
| blk1 = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
| blk2 = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
| blk3 = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
| |
| blkp1 = blk_get_public(blk1); |
| blkp2 = blk_get_public(blk2); |
| blkp3 = blk_get_public(blk3); |
| |
| tgm1 = &blkp1->throttle_group_member; |
| tgm2 = &blkp2->throttle_group_member; |
| tgm3 = &blkp3->throttle_group_member; |
| |
| g_assert(tgm1->throttle_state == NULL); |
| g_assert(tgm2->throttle_state == NULL); |
| g_assert(tgm3->throttle_state == NULL); |
| |
| throttle_group_register_tgm(tgm1, "bar", blk_get_aio_context(blk1)); |
| throttle_group_register_tgm(tgm2, "foo", blk_get_aio_context(blk2)); |
| throttle_group_register_tgm(tgm3, "bar", blk_get_aio_context(blk3)); |
| |
| g_assert(tgm1->throttle_state != NULL); |
| g_assert(tgm2->throttle_state != NULL); |
| g_assert(tgm3->throttle_state != NULL); |
| |
| g_assert(!strcmp(throttle_group_get_name(tgm1), "bar")); |
| g_assert(!strcmp(throttle_group_get_name(tgm2), "foo")); |
| g_assert(tgm1->throttle_state == tgm3->throttle_state); |
| |
| /* Setting the config of a group member affects the whole group */ |
| throttle_config_init(&cfg1); |
| cfg1.buckets[THROTTLE_BPS_READ].avg = 500000; |
| cfg1.buckets[THROTTLE_BPS_WRITE].avg = 285000; |
| cfg1.buckets[THROTTLE_OPS_READ].avg = 20000; |
| cfg1.buckets[THROTTLE_OPS_WRITE].avg = 12000; |
| throttle_group_config(tgm1, &cfg1); |
| |
| throttle_group_get_config(tgm1, &cfg1); |
| throttle_group_get_config(tgm3, &cfg2); |
| g_assert(!memcmp(&cfg1, &cfg2, sizeof(cfg1))); |
| |
| cfg2.buckets[THROTTLE_BPS_READ].avg = 4547; |
| cfg2.buckets[THROTTLE_BPS_WRITE].avg = 1349; |
| cfg2.buckets[THROTTLE_OPS_READ].avg = 123; |
| cfg2.buckets[THROTTLE_OPS_WRITE].avg = 86; |
| throttle_group_config(tgm3, &cfg1); |
| |
| throttle_group_get_config(tgm1, &cfg1); |
| throttle_group_get_config(tgm3, &cfg2); |
| g_assert(!memcmp(&cfg1, &cfg2, sizeof(cfg1))); |
| |
| throttle_group_unregister_tgm(tgm1); |
| throttle_group_unregister_tgm(tgm2); |
| throttle_group_unregister_tgm(tgm3); |
| |
| g_assert(tgm1->throttle_state == NULL); |
| g_assert(tgm2->throttle_state == NULL); |
| g_assert(tgm3->throttle_state == NULL); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| qemu_init_main_loop(&error_fatal); |
| ctx = qemu_get_aio_context(); |
| bdrv_init(); |
| module_call_init(MODULE_INIT_QOM); |
| |
| do {} while (g_main_context_iteration(NULL, false)); |
| |
| /* tests in the same order as the header function declarations */ |
| g_test_init(&argc, &argv, NULL); |
| g_test_add_func("/throttle/leak_bucket", test_leak_bucket); |
| g_test_add_func("/throttle/compute_wait", test_compute_wait); |
| g_test_add_func("/throttle/init", test_init); |
| g_test_add_func("/throttle/init_readonly", test_init_readonly); |
| g_test_add_func("/throttle/init_writeonly", test_init_writeonly); |
| g_test_add_func("/throttle/destroy", test_destroy); |
| g_test_add_func("/throttle/have_timer", test_have_timer); |
| g_test_add_func("/throttle/detach_attach", test_detach_attach); |
| g_test_add_func("/throttle/config/enabled", test_enabled); |
| g_test_add_func("/throttle/config/conflicting", test_conflicting_config); |
| g_test_add_func("/throttle/config/is_valid", test_is_valid); |
| g_test_add_func("/throttle/config/ranges", test_ranges); |
| g_test_add_func("/throttle/config/max", test_max_is_missing_limit); |
| g_test_add_func("/throttle/config/iops_size", |
| test_iops_size_is_missing_limit); |
| g_test_add_func("/throttle/config_functions", test_config_functions); |
| g_test_add_func("/throttle/accounting", test_accounting); |
| g_test_add_func("/throttle/groups", test_groups); |
| return g_test_run(); |
| } |
| |
