From: Mathieu Desnoyers Date: Sun, 4 Sep 2011 21:34:49 +0000 (-0400) Subject: rbtree test: add more test options X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=fa67ba2e3ae78b8b81765567e09ed30d669c0d87;p=userspace-rcu.git rbtree test: add more test options Signed-off-by: Mathieu Desnoyers --- diff --git a/tests/test_urcu_rbtree.c b/tests/test_urcu_rbtree.c index 0d80f0c..bd7ecad 100644 --- a/tests/test_urcu_rbtree.c +++ b/tests/test_urcu_rbtree.c @@ -48,9 +48,11 @@ extern int __thread disable_debug; /* hardcoded number of CPUs */ #define NR_CPUS 16384 -/* number of insert/delete */ -#define NR_RAND 6 -//#define NR_RAND 7 +/* Default number of insert/delete */ +#define DEFAULT_NR_RAND 6 + +/* Default number of global items (used by readers for lookups) */ +#define DEFAULT_NR_GLOBAL 10 #if defined(_syscall0) _syscall0(pid_t, gettid) @@ -95,9 +97,19 @@ static unsigned long rduration; /* write-side C.S. duration, in loops */ static unsigned long wduration; +static unsigned long nr_rand_items = DEFAULT_NR_RAND; + +static int opt_search_begin, + opt_search_bottom, + opt_search_end, + opt_search_mid, + opt_iter_min_max, + opt_iter_max_min, + opt_benchmark; + static inline void loop_sleep(unsigned long l) { - while(l-- != 0) + while (l-- != 0) caa_cpu_relax(); } @@ -172,7 +184,7 @@ static unsigned long long __thread nr_reads; static unsigned int nr_readers; static unsigned int nr_writers; -static unsigned long global_items; +static unsigned long global_items = DEFAULT_NR_GLOBAL; static void **global_key = NULL; pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER; @@ -235,81 +247,104 @@ void *thr_reader(void *_count) cmm_smp_mb(); for (;;) { + /* search begin key */ + if (opt_search_begin) { + for (i = 0; i < global_items; i++) { + rcu_read_lock(); + node = rcu_rbtree_search_begin_key(&rbtree, + rcu_dereference(rbtree.root), + global_key[i]); + assert(!rcu_rbtree_is_nil(&rbtree, node)); + rcu_read_unlock(); + nr_reads++; + } + } + /* search bottom of range */ - for (i = 0; i < global_items; i++) { - rcu_read_lock(); - node = rcu_rbtree_search(&rbtree, - rcu_dereference(rbtree.root), - global_key[i]); - assert(!rcu_rbtree_is_nil(&rbtree, node)); - rcu_read_unlock(); + if (opt_search_bottom) { + for (i = 0; i < global_items; i++) { + rcu_read_lock(); + node = rcu_rbtree_search(&rbtree, + rcu_dereference(rbtree.root), + global_key[i]); + assert(!rcu_rbtree_is_nil(&rbtree, node)); + rcu_read_unlock(); + nr_reads++; + } } /* search end of range */ - for (i = 0; i < global_items; i++) { - rcu_read_lock(); - node = rcu_rbtree_search(&rbtree, - rcu_dereference(rbtree.root), - (void*) ((unsigned long) global_key[i] + 3)); - assert(!rcu_rbtree_is_nil(&rbtree, node)); - rcu_read_unlock(); + if (opt_search_end) { + for (i = 0; i < global_items; i++) { + rcu_read_lock(); + node = rcu_rbtree_search(&rbtree, + rcu_dereference(rbtree.root), + (void*) ((unsigned long) global_key[i] + 3)); + assert(!rcu_rbtree_is_nil(&rbtree, node)); + rcu_read_unlock(); + nr_reads++; + } } /* search range (middle) */ - for (i = 0; i < global_items; i++) { - rcu_read_lock(); - node = rcu_rbtree_search_range(&rbtree, - rcu_dereference(rbtree.root), - (void*) ((unsigned long) global_key[i] + 1), - (void*) ((unsigned long) global_key[i] + 2)); - assert(!rcu_rbtree_is_nil(&rbtree, node)); - rcu_read_unlock(); + if (opt_search_mid) { + for (i = 0; i < global_items; i++) { + rcu_read_lock(); + node = rcu_rbtree_search_range(&rbtree, + rcu_dereference(rbtree.root), + (void*) ((unsigned long) global_key[i] + 1), + (void*) ((unsigned long) global_key[i] + 2)); + assert(!rcu_rbtree_is_nil(&rbtree, node)); + rcu_read_unlock(); + nr_reads++; + } } - /* search begin key */ - for (i = 0; i < global_items; i++) { + /* min + next */ + if (opt_iter_min_max) { + memset(lookup_hit, 0, sizeof(*lookup_hit) * global_items); + rcu_read_lock(); - node = rcu_rbtree_search_begin_key(&rbtree, - rcu_dereference(rbtree.root), - global_key[i]); - assert(!rcu_rbtree_is_nil(&rbtree, node)); + node = rcu_rbtree_min(&rbtree, + rcu_dereference(rbtree.root)); + while (!rcu_rbtree_is_nil(&rbtree, node)) { + if (!opt_benchmark) + set_lookup_index(node, lookup_hit); + node = rcu_rbtree_next(&rbtree, node); + nr_reads++; + } rcu_read_unlock(); - } - /* min + next */ - memset(lookup_hit, 0, sizeof(*lookup_hit) * global_items); - - rcu_read_lock(); - node = rcu_rbtree_min(&rbtree, - rcu_dereference(rbtree.root)); - while (!rcu_rbtree_is_nil(&rbtree, node)) { - set_lookup_index(node, lookup_hit); - node = rcu_rbtree_next(&rbtree, node); + if (!opt_benchmark) { + for (i = 0; i < global_items; i++) + assert(lookup_hit[i]); + } } - rcu_read_unlock(); - - for (i = 0; i < global_items; i++) - assert(lookup_hit[i]); /* max + prev */ - memset(lookup_hit, 0, sizeof(*lookup_hit) * global_items); - - rcu_read_lock(); - node = rcu_rbtree_max(&rbtree, - rcu_dereference(rbtree.root)); - while (!rcu_rbtree_is_nil(&rbtree, node)) { - set_lookup_index(node, lookup_hit); - node = rcu_rbtree_prev(&rbtree, node); - } - rcu_read_unlock(); + if (opt_iter_max_min) { + memset(lookup_hit, 0, sizeof(*lookup_hit) * global_items); + + rcu_read_lock(); + node = rcu_rbtree_max(&rbtree, + rcu_dereference(rbtree.root)); + while (!rcu_rbtree_is_nil(&rbtree, node)) { + if (!opt_benchmark) + set_lookup_index(node, lookup_hit); + node = rcu_rbtree_prev(&rbtree, node); + nr_reads++; + } + rcu_read_unlock(); - for (i = 0; i < global_items; i++) - assert(lookup_hit[i]); + if (!opt_benchmark) { + for (i = 0; i < global_items; i++) + assert(lookup_hit[i]); + } + } debug_yield_read(); if (unlikely(rduration)) loop_sleep(rduration); - nr_reads++; if (unlikely(!test_duration_read())) break; } @@ -333,7 +368,7 @@ void *thr_writer(void *_count) { unsigned long long *count = _count; struct rcu_rbtree_node *node; - void *key[NR_RAND]; + void **key; int i; printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n", @@ -341,6 +376,8 @@ void *thr_writer(void *_count) set_affinity(); + key = malloc(sizeof(*key) * nr_rand_items); + assert(key); //disable_debug = 1; rcu_register_thread(); @@ -353,7 +390,7 @@ void *thr_writer(void *_count) for (;;) { rcu_copy_mutex_lock(); - for (i = 0; i < NR_RAND; i++) { + for (i = 0; i < nr_rand_items; i++) { //key[i] = (void *)(unsigned long)(rand() % 2048); key[i] = (void *)(unsigned long)(((unsigned long) rand() * 4) % 2048); //For more collisions @@ -365,6 +402,7 @@ void *thr_writer(void *_count) rcu_rbtree_insert(&rbtree, key[i], (void *)((unsigned long) key[i] + 4)); rcu_read_unlock(); + nr_writes++; } rcu_copy_mutex_unlock(); @@ -372,7 +410,7 @@ void *thr_writer(void *_count) loop_sleep(wduration); rcu_copy_mutex_lock(); - for (i = 0; i < NR_RAND; i++) { + for (i = 0; i < nr_rand_items; i++) { #if 0 node = rcu_rbtree_min(rbtree, rbtree->root); while (!rcu_rbtree_is_nil(&rbtree, node)) { @@ -393,10 +431,10 @@ void *thr_writer(void *_count) assert(!rcu_rbtree_is_nil(&rbtree, node)); rcu_rbtree_remove(&rbtree, node); rcu_read_unlock(); + nr_writes++; } rcu_copy_mutex_unlock(); - nr_writes++; if (unlikely(!test_duration_write())) break; if (unlikely(wdelay)) @@ -408,6 +446,7 @@ void *thr_writer(void *_count) printf_verbose("thread_end %s, thread id : %lx, tid %lu\n", "writer", pthread_self(), (unsigned long)gettid()); *count = nr_writes; + free(key); return ((void*)2); } @@ -422,6 +461,15 @@ void show_usage(int argc, char **argv) printf(" [-e duration] (writer C.S. duration (in loops))"); printf(" [-v] (verbose output)"); printf(" [-a cpu#] [-a cpu#]... (affinity)"); + printf(" [-g items] Initially populate n items (for reader lookups)"); + printf(" [-f items] Writers add n random items and then remove these items"); + printf(" [-b] Reader: search begin key"); + printf(" [-n] Reader: search bottom of range"); + printf(" [-N] Reader: search end of range"); + printf(" [-m] Reader: search range (middle)"); + printf(" [-i] Reader: iterate from min to max"); + printf(" [-I] Reader: iterate from max to min"); + printf(" [-B] Benchmark mode (no validation)"); printf("\n"); } @@ -511,6 +559,34 @@ int main(int argc, char **argv) } global_items = atol(argv[++i]); break; + case 'b': + opt_search_begin = 1; + break; + case 'n': + opt_search_bottom = 1; + break; + case 'N': + opt_search_end = 1; + break; + case 'm': + opt_search_mid = 1; + break; + case 'i': + opt_iter_min_max = 1; + break; + case 'I': + opt_iter_max_min = 1; + break; + case 'B': + opt_benchmark = 1; + break; + case 'f': + if (argc < i + 2) { + show_usage(argc, argv); + return -1; + } + nr_rand_items = atol(argv[++i]); + break; } } @@ -598,10 +674,10 @@ int main(int argc, char **argv) printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu " "nr_writers %3u " "wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu " - "global_items %6lu\n", + "global_items %6lu rand_items %6lu\n", argv[0], duration, nr_readers, rduration, wduration, nr_writers, wdelay, tot_reads, tot_writes, - tot_reads + tot_writes, global_items); + tot_reads + tot_writes, global_items, nr_rand_items); free(tid_reader); free(tid_writer); free(count_reader);