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Limit the number of curls we recruit on communication failures and with delaynet enabled to 5 by maintaining a per-pool curl count, and using a pthread conditional that wakes up when one is returned to the ring buffer.

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This commit is contained in:
Con Kolivas 2012-05-03 09:24:25 +10:00
parent d4405de704
commit 5081c1824a
2 changed files with 19 additions and 5 deletions
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22
cgminer.c
View File

@ -390,6 +390,8 @@ static struct pool *add_pool(void)
pools[total_pools++] = pool;
if (unlikely(pthread_mutex_init(&pool->pool_lock, NULL)))
quit(1, "Failed to pthread_mutex_init in add_pool");
if (unlikely(pthread_cond_init(&pool->cr_cond, NULL)))
quit(1, "Failed to pthread_cond_init in add_pool");
INIT_LIST_HEAD(&pool->curlring);
/* Make sure the pool doesn't think we've been idle since time 0 */
@ -1965,19 +1967,29 @@ static void recruit_curl(struct pool *pool)
quit(1, "Failed to init in recruit_curl");
list_add(&ce->node, &pool->curlring);
applog(LOG_DEBUG, "Recruited new curl for pool %d", pool->pool_no);
pool->curls++;
applog(LOG_DEBUG, "Recruited curl %d for pool %d", pool->curls, pool->pool_no);
}
/* Grab an available curl if there is one. If not, then recruit extra curls
* unless we are in a submit_fail situation, or we have opt_delaynet enabled
* and there are already 5 curls in circulation */
static struct curl_ent *pop_curl_entry(struct pool *pool)
{
struct curl_ent *ce;
mutex_lock(&pool->pool_lock);
if (list_empty(&pool->curlring))
if (!pool->curls)
recruit_curl(pool);
else if (list_empty(&pool->curlring)) {
if ((pool->submit_fail || opt_delaynet) && pool->curls > 4)
pthread_cond_wait(&pool->cr_cond, &pool->pool_lock);
else
recruit_curl(pool);
}
ce = list_entry(pool->curlring.next, struct curl_ent, node);
list_del(&ce->node);
mutex_unlock(&pool->pool_lock);;
mutex_unlock(&pool->pool_lock);
return ce;
}
@ -1987,6 +1999,7 @@ static void push_curl_entry(struct curl_ent *ce, struct pool *pool)
mutex_lock(&pool->pool_lock);
list_add_tail(&ce->node, &pool->curlring);
gettimeofday(&ce->tv, NULL);
pthread_cond_signal(&pool->cr_cond);
mutex_unlock(&pool->pool_lock);
}
@ -3999,7 +4012,8 @@ static void reap_curl(struct pool *pool)
mutex_lock(&pool->pool_lock);
list_for_each_entry_safe(ent, iter, &pool->curlring, node) {
if (now.tv_sec - ent->tv.tv_sec > 60) {
applog(LOG_DEBUG, "Reaped curl from pool %d", pool->pool_no);
applog(LOG_DEBUG, "Reaped curl %d from pool %d", pool->curls, pool->pool_no);
pool->curls--;
list_del(&ent->node);
curl_easy_cleanup(ent->curl);
free(ent);

2
miner.h
View File

@ -641,7 +641,7 @@ struct pool {
pthread_t submit_thread;
pthread_t getwork_thread;
pthread_mutex_t cr_lock;
int curls;
pthread_cond_t cr_cond;
struct list_head curlring;
};