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driver-ztex: search the complete noncerange based on the actual speed

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search the complete noncerange until the range to the end is more
work than at the last round. doing one more round would mean we
would have a overrun, which is a waste.

with actual ztex boards this means that a new getwork is needed
every 19 seconds in general and not every 10 seconds (without
rollntime).
This commit is contained in:
Denis Ahrens 2012-12-11 23:47:26 +01:00
parent d3aed9fe90
commit 7c01f16593
1 changed files with 1 additions and 1 deletions
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2
driver-ztex.c
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@ -282,7 +282,7 @@ static int64_t ztex_scanhash(struct thr_info *thr, struct work *work,
#endif #endif
if (nonce > noncecnt) if (nonce > noncecnt)
noncecnt = nonce; noncecnt = nonce;
if (((nonce & 0x7fffffff) >> 4) < ((lastnonce[i] & 0x7fffffff) >> 4)) { if (((0xffffffff - nonce) < (nonce - lastnonce[i])) || nonce < lastnonce[i]) {
applog(LOG_DEBUG, "%s: overflow nonce=%0.8x lastnonce=%0.8x", ztex->repr, nonce, lastnonce[i]); applog(LOG_DEBUG, "%s: overflow nonce=%0.8x lastnonce=%0.8x", ztex->repr, nonce, lastnonce[i]);
overflow = true; overflow = true;
} else } else