1#!/usr/bin/env python3 2# SPDX-License-Identifier: GPL-2.0 3 4import json 5import os 6import subprocess 7 8import _damon_sysfs 9 10def dump_damon_status_dict(pid): 11 try: 12 subprocess.check_output(['which', 'drgn'], stderr=subprocess.DEVNULL) 13 except: 14 return None, 'drgn not found' 15 file_dir = os.path.dirname(os.path.abspath(__file__)) 16 dump_script = os.path.join(file_dir, 'drgn_dump_damon_status.py') 17 rc = subprocess.call(['drgn', dump_script, pid, 'damon_dump_output'], 18 stderr=subprocess.DEVNULL) 19 if rc != 0: 20 return None, 'drgn fail' 21 try: 22 with open('damon_dump_output', 'r') as f: 23 return json.load(f), None 24 except Exception as e: 25 return None, 'json.load fail (%s)' % e 26 27def fail(expectation, status): 28 print('unexpected %s' % expectation) 29 print(json.dumps(status, indent=4)) 30 exit(1) 31 32def assert_true(condition, expectation, status): 33 if condition is not True: 34 fail(expectation, status) 35 36def assert_watermarks_committed(watermarks, dump): 37 wmark_metric_val = { 38 'none': 0, 39 'free_mem_rate': 1, 40 } 41 assert_true(dump['metric'] == wmark_metric_val[watermarks.metric], 42 'metric', dump) 43 assert_true(dump['interval'] == watermarks.interval, 'interval', dump) 44 assert_true(dump['high'] == watermarks.high, 'high', dump) 45 assert_true(dump['mid'] == watermarks.mid, 'mid', dump) 46 assert_true(dump['low'] == watermarks.low, 'low', dump) 47 48def assert_quota_goal_committed(qgoal, dump): 49 metric_val = { 50 'user_input': 0, 51 'some_mem_psi_us': 1, 52 'node_mem_used_bp': 2, 53 'node_mem_free_bp': 3, 54 } 55 assert_true(dump['metric'] == metric_val[qgoal.metric], 'metric', dump) 56 assert_true(dump['target_value'] == qgoal.target_value, 'target_value', 57 dump) 58 if qgoal.metric == 'user_input': 59 assert_true(dump['current_value'] == qgoal.current_value, 60 'current_value', dump) 61 assert_true(dump['nid'] == qgoal.nid, 'nid', dump) 62 63def assert_quota_committed(quota, dump): 64 assert_true(dump['reset_interval'] == quota.reset_interval_ms, 65 'reset_interval', dump) 66 assert_true(dump['ms'] == quota.ms, 'ms', dump) 67 assert_true(dump['sz'] == quota.sz, 'sz', dump) 68 for idx, qgoal in enumerate(quota.goals): 69 assert_quota_goal_committed(qgoal, dump['goals'][idx]) 70 assert_true(dump['weight_sz'] == quota.weight_sz_permil, 'weight_sz', dump) 71 assert_true(dump['weight_nr_accesses'] == quota.weight_nr_accesses_permil, 72 'weight_nr_accesses', dump) 73 assert_true( 74 dump['weight_age'] == quota.weight_age_permil, 'weight_age', dump) 75 76 77def assert_migrate_dests_committed(dests, dump): 78 assert_true(dump['nr_dests'] == len(dests.dests), 'nr_dests', dump) 79 for idx, dest in enumerate(dests.dests): 80 assert_true(dump['node_id_arr'][idx] == dest.id, 'node_id', dump) 81 assert_true(dump['weight_arr'][idx] == dest.weight, 'weight', dump) 82 83def assert_filter_committed(filter_, dump): 84 assert_true(filter_.type_ == dump['type'], 'type', dump) 85 assert_true(filter_.matching == dump['matching'], 'matching', dump) 86 assert_true(filter_.allow == dump['allow'], 'allow', dump) 87 # TODO: check memcg_path and memcg_id if type is memcg 88 if filter_.type_ == 'addr': 89 assert_true([filter_.addr_start, filter_.addr_end] == 90 dump['addr_range'], 'addr_range', dump) 91 elif filter_.type_ == 'target': 92 assert_true(filter_.target_idx == dump['target_idx'], 'target_idx', 93 dump) 94 elif filter_.type_ == 'hugepage_size': 95 assert_true([filter_.min_, filter_.max_] == dump['sz_range'], 96 'sz_range', dump) 97 98def assert_access_pattern_committed(pattern, dump): 99 assert_true(dump['min_sz_region'] == pattern.size[0], 'min_sz_region', 100 dump) 101 assert_true(dump['max_sz_region'] == pattern.size[1], 'max_sz_region', 102 dump) 103 assert_true(dump['min_nr_accesses'] == pattern.nr_accesses[0], 104 'min_nr_accesses', dump) 105 assert_true(dump['max_nr_accesses'] == pattern.nr_accesses[1], 106 'max_nr_accesses', dump) 107 assert_true(dump['min_age_region'] == pattern.age[0], 'min_age_region', 108 dump) 109 assert_true(dump['max_age_region'] == pattern.age[1], 'miaxage_region', 110 dump) 111 112def assert_scheme_committed(scheme, dump): 113 assert_access_pattern_committed(scheme.access_pattern, dump['pattern']) 114 action_val = { 115 'willneed': 0, 116 'cold': 1, 117 'pageout': 2, 118 'hugepage': 3, 119 'nohugeapge': 4, 120 'lru_prio': 5, 121 'lru_deprio': 6, 122 'migrate_hot': 7, 123 'migrate_cold': 8, 124 'stat': 9, 125 } 126 assert_true(dump['action'] == action_val[scheme.action], 'action', dump) 127 assert_true(dump['apply_interval_us'] == scheme. apply_interval_us, 128 'apply_interval_us', dump) 129 assert_true(dump['target_nid'] == scheme.target_nid, 'target_nid', dump) 130 assert_migrate_dests_committed(scheme.dests, dump['migrate_dests']) 131 assert_quota_committed(scheme.quota, dump['quota']) 132 assert_watermarks_committed(scheme.watermarks, dump['wmarks']) 133 # TODO: test filters directory 134 for idx, f in enumerate(scheme.core_filters.filters): 135 assert_filter_committed(f, dump['core_filters'][idx]) 136 for idx, f in enumerate(scheme.ops_filters.filters): 137 assert_filter_committed(f, dump['ops_filters'][idx]) 138 139def assert_schemes_committed(schemes, dump): 140 assert_true(len(schemes) == len(dump), 'len_schemes', dump) 141 for idx, scheme in enumerate(schemes): 142 assert_scheme_committed(scheme, dump[idx]) 143 144def assert_monitoring_attrs_committed(attrs, dump): 145 assert_true(dump['sample_interval'] == attrs.sample_us, 'sample_interval', 146 dump) 147 assert_true(dump['aggr_interval'] == attrs.aggr_us, 'aggr_interval', dump) 148 assert_true(dump['intervals_goal']['access_bp'] == 149 attrs.intervals_goal.access_bp, 'access_bp', 150 dump['intervals_goal']) 151 assert_true(dump['intervals_goal']['aggrs'] == attrs.intervals_goal.aggrs, 152 'aggrs', dump['intervals_goal']) 153 assert_true(dump['intervals_goal']['min_sample_us'] == 154 attrs.intervals_goal.min_sample_us, 'min_sample_us', 155 dump['intervals_goal']) 156 assert_true(dump['intervals_goal']['max_sample_us'] == 157 attrs.intervals_goal.max_sample_us, 'max_sample_us', 158 dump['intervals_goal']) 159 160 assert_true(dump['ops_update_interval'] == attrs.update_us, 161 'ops_update_interval', dump) 162 assert_true(dump['min_nr_regions'] == attrs.min_nr_regions, 163 'min_nr_regions', dump) 164 assert_true(dump['max_nr_regions'] == attrs.max_nr_regions, 165 'max_nr_regions', dump) 166 167def assert_monitoring_target_committed(target, dump): 168 # target.pid is the pid "number", while dump['pid'] is 'struct pid' 169 # pointer, and hence cannot be compared. 170 assert_true(dump['obsolete'] == target.obsolete, 'target obsolete', dump) 171 172def assert_monitoring_targets_committed(targets, dump): 173 assert_true(len(targets) == len(dump), 'len_targets', dump) 174 for idx, target in enumerate(targets): 175 assert_monitoring_target_committed(target, dump[idx]) 176 177def assert_ctx_committed(ctx, dump): 178 ops_val = { 179 'vaddr': 0, 180 'fvaddr': 1, 181 'paddr': 2, 182 } 183 assert_true(dump['ops']['id'] == ops_val[ctx.ops], 'ops_id', dump) 184 assert_monitoring_attrs_committed(ctx.monitoring_attrs, dump['attrs']) 185 assert_monitoring_targets_committed(ctx.targets, dump['adaptive_targets']) 186 assert_schemes_committed(ctx.schemes, dump['schemes']) 187 188def assert_ctxs_committed(kdamonds): 189 status, err = dump_damon_status_dict(kdamonds.kdamonds[0].pid) 190 if err is not None: 191 print(err) 192 kdamonds.stop() 193 exit(1) 194 195 ctxs = kdamonds.kdamonds[0].contexts 196 dump = status['contexts'] 197 assert_true(len(ctxs) == len(dump), 'ctxs length', dump) 198 for idx, ctx in enumerate(ctxs): 199 assert_ctx_committed(ctx, dump[idx]) 200 201def main(): 202 kdamonds = _damon_sysfs.Kdamonds( 203 [_damon_sysfs.Kdamond( 204 contexts=[_damon_sysfs.DamonCtx( 205 targets=[_damon_sysfs.DamonTarget(pid=-1)], 206 schemes=[_damon_sysfs.Damos()], 207 )])]) 208 err = kdamonds.start() 209 if err is not None: 210 print('kdamond start failed: %s' % err) 211 exit(1) 212 213 assert_ctxs_committed(kdamonds) 214 215 context = _damon_sysfs.DamonCtx( 216 monitoring_attrs=_damon_sysfs.DamonAttrs( 217 sample_us=100000, aggr_us=2000000, 218 intervals_goal=_damon_sysfs.IntervalsGoal( 219 access_bp=400, aggrs=3, min_sample_us=5000, 220 max_sample_us=10000000), 221 update_us=2000000), 222 schemes=[_damon_sysfs.Damos( 223 action='pageout', 224 access_pattern=_damon_sysfs.DamosAccessPattern( 225 size=[4096, 2**10], 226 nr_accesses=[3, 317], 227 age=[5,71]), 228 quota=_damon_sysfs.DamosQuota( 229 sz=100*1024*1024, ms=100, 230 goals=[_damon_sysfs.DamosQuotaGoal( 231 metric='node_mem_used_bp', 232 target_value=9950, 233 nid=1)], 234 reset_interval_ms=1500, 235 weight_sz_permil=20, 236 weight_nr_accesses_permil=200, 237 weight_age_permil=1000), 238 watermarks=_damon_sysfs.DamosWatermarks( 239 metric = 'free_mem_rate', interval = 500000, # 500 ms 240 high = 500, mid = 400, low = 50), 241 target_nid=1, 242 apply_interval_us=1000000, 243 dests=_damon_sysfs.DamosDests( 244 dests=[_damon_sysfs.DamosDest(id=1, weight=30), 245 _damon_sysfs.DamosDest(id=0, weight=70)]), 246 core_filters=[ 247 _damon_sysfs.DamosFilter(type_='addr', matching=True, 248 allow=False, addr_start=42, 249 addr_end=4242), 250 ], 251 ops_filters=[ 252 _damon_sysfs.DamosFilter(type_='anon', matching=True, 253 allow=True), 254 ], 255 )]) 256 context.idx = 0 257 context.kdamond = kdamonds.kdamonds[0] 258 kdamonds.kdamonds[0].contexts = [context] 259 kdamonds.kdamonds[0].commit() 260 261 assert_ctxs_committed(kdamonds) 262 263 # test online commitment of minimum context. 264 context = _damon_sysfs.DamonCtx() 265 context.idx = 0 266 context.kdamond = kdamonds.kdamonds[0] 267 kdamonds.kdamonds[0].contexts = [context] 268 kdamonds.kdamonds[0].commit() 269 270 assert_ctxs_committed(kdamonds) 271 272 kdamonds.stop() 273 274 # test obsolete_target. 275 proc1 = subprocess.Popen(['sh'], stdout=subprocess.PIPE, 276 stderr=subprocess.PIPE) 277 proc2 = subprocess.Popen(['sh'], stdout=subprocess.PIPE, 278 stderr=subprocess.PIPE) 279 proc3 = subprocess.Popen(['sh'], stdout=subprocess.PIPE, 280 stderr=subprocess.PIPE) 281 kdamonds = _damon_sysfs.Kdamonds( 282 [_damon_sysfs.Kdamond( 283 contexts=[_damon_sysfs.DamonCtx( 284 ops='vaddr', 285 targets=[ 286 _damon_sysfs.DamonTarget(pid=proc1.pid), 287 _damon_sysfs.DamonTarget(pid=proc2.pid), 288 _damon_sysfs.DamonTarget(pid=proc3.pid), 289 ], 290 schemes=[_damon_sysfs.Damos()], 291 )])]) 292 err = kdamonds.start() 293 if err is not None: 294 print('kdamond start failed: %s' % err) 295 exit(1) 296 kdamonds.kdamonds[0].contexts[0].targets[1].obsolete = True 297 kdamonds.kdamonds[0].commit() 298 del kdamonds.kdamonds[0].contexts[0].targets[1] 299 assert_ctxs_committed(kdamonds) 300 kdamonds.stop() 301 302if __name__ == '__main__': 303 main() 304