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Check that we'll get 1 shares' worth of work time by rolling before saying we should roll the work.

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This commit is contained in:
Con Kolivas 2012-08-16 09:53:36 +10:00
parent afcfea15a7
commit 381c56f811
1 changed files with 28 additions and 18 deletions
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46
cgminer.c
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@ -2289,9 +2289,27 @@ static bool stale_work(struct work *work, bool share);
static inline bool should_roll(struct work *work)
{
if (work->pool == current_pool() || pool_strategy == POOL_LOADBALANCE)
return true;
return false;
struct timeval now;
double share_time;
time_t expiry;
if (work->pool != current_pool() && pool_strategy != POOL_LOADBALANCE)
return false;
share_time = total_secs * mining_threads / (total_accepted + 1);
if (work->rolltime > opt_scantime)
expiry = work->rolltime;
else
expiry = opt_scantime;
expiry -= share_time;
/* We shouldn't roll if we're unlikely to get one shares' duration
* work out of doing so */
gettimeofday(&now, NULL);
if (now.tv_sec - work->tv_staged.tv_sec > expiry)
return false;
return true;
}
/* Limit rolls to 7000 to not beyond 2 hours in the future where bitcoind will
@ -2467,21 +2485,13 @@ static bool stale_work(struct work *work, bool share)
struct pool *pool;
int getwork_delay;
if (share) {
/* Technically the rolltime should be correct but some pools
* advertise a broken expire= that is lower than a meaningful
* scantime */
if (work->rolltime > opt_scantime)
work_expiry = work->rolltime;
else
work_expiry = opt_expiry;
} else {
/* Don't keep rolling work right up to the expiration */
if (work->rolltime > opt_scantime)
work_expiry = (work->rolltime - opt_scantime) * 2 / 3 + opt_scantime;
else /* Shouldn't happen unless someone increases scantime */
work_expiry = opt_scantime;
}
/* Technically the rolltime should be correct but some pools
* advertise a broken expire= that is lower than a meaningful
* scantime */
if (work->rolltime > opt_scantime)
work_expiry = work->rolltime;
else
work_expiry = opt_expiry;
pool = work->pool;
/* Factor in the average getwork delay of this pool, rounding it up to