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Fix max-nonce auto-adjustment logic to actually work

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Jeff Garzik 2011-02-04 11:54:31 -05:00 committed by Jeff Garzik
parent 51eb1b4ef9
commit e47076caac
1 changed files with 8 additions and 10 deletions
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18
cpu-miner.c
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@ -54,7 +54,7 @@ static const char *algo_names[] = {
bool opt_debug = false;
bool opt_protocol = false;
bool opt_quiet = false;
static bool opt_quiet = false;
static int opt_retries = 10;
static int opt_fail_pause = 30;
static int opt_scantime = 5;
@ -258,12 +258,12 @@ static void *miner_thread(void *thr_id_int)
int failures = 0;
static const char *rpc_req =
"{\"method\": \"getwork\", \"params\": [], \"id\":0}\r\n";
uint32_t max_nonce = 0xffffff;
while (1) {
struct work work __attribute__((aligned(128)));
unsigned long hashes_done;
struct timeval tv_start, tv_end, diff;
uint32_t max_nonce = 0xffffff;
json_t *val;
bool rc;
@ -360,14 +360,12 @@ static void *miner_thread(void *thr_id_int)
/* adjust max_nonce to meet target scan time */
if (diff.tv_sec > (opt_scantime * 2))
max_nonce /= 2; /* large decrease */
else if (diff.tv_sec > opt_scantime)
max_nonce -= 1000; /* small decrease */
else if (diff.tv_sec < (opt_scantime - 1))
max_nonce += 1000; /* small increase */
/* catch stupidly slow cases, such as simulators */
if (max_nonce < 1000)
max_nonce = 1000;
else if ((diff.tv_sec > opt_scantime) &&
(max_nonce > 1500000))
max_nonce -= 1000000; /* small decrease */
else if ((diff.tv_sec < opt_scantime) &&
(max_nonce < 0xffffec76))
max_nonce += 100000; /* small increase */
/* if nonce found, submit work */
if (rc)