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add constants for shared (GUI/core) -dbcache settings

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- adds nDefaultDbCache, nMaxDbCache and nMinDbCache in txdb.h
This commit is contained in:
Philip Kaufmann
2014-02-16 22:00:12 +01:00
parent 879b390758
commit 82e96006ae
5 changed files with 20 additions and 18 deletions
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10
src/init.cpp
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@@ -196,7 +196,7 @@ std::string HelpMessage(HelpMessageMode hmm)
strUsage += " -testnet " + _("Use the test network") + "\n";
strUsage += " -pid=<file> " + _("Specify pid file (default: bitcoind.pid)") + "\n";
strUsage += " -gen " + _("Generate coins (default: 0)") + "\n";
strUsage += " -dbcache=<n> " + _("Set database cache size in megabytes (default: 100)") + "\n";
strUsage += " -dbcache=<n> " + strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache) + "\n";
strUsage += " -timeout=<n> " + _("Specify connection timeout in milliseconds (default: 5000)") + "\n";
strUsage += " -proxy=<ip:port> " + _("Connect through SOCKS proxy") + "\n";
strUsage += " -socks=<n> " + _("Select SOCKS version for -proxy (4 or 5, default: 5)") + "\n";
@@ -776,9 +776,11 @@ bool AppInit2(boost::thread_group& threadGroup)
}
// cache size calculations
size_t nTotalCache = GetArg("-dbcache", 100) << 20;
if (nTotalCache < (1 << 22))
nTotalCache = (1 << 22); // total cache cannot be less than 4 MiB
size_t nTotalCache = (GetArg("-dbcache", nDefaultDbCache) << 20);
if (nTotalCache < (nMinDbCache << 20))
nTotalCache = (nMinDbCache << 20); // total cache cannot be less than nMinDbCache
else if (nTotalCache > (nMaxDbCache << 20))
nTotalCache = (nMaxDbCache << 20); // total cache cannot be greater than nMaxDbCache
size_t nBlockTreeDBCache = nTotalCache / 8;
if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", false))
nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB