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Cache size optimizations

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This commit is contained in:
Pieter Wuille
2012-11-04 17:11:48 +01:00
parent a56d3f8a10
commit 1c83b0a377
7 changed files with 27 additions and 14 deletions
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17
src/init.cpp
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@@ -236,7 +236,6 @@ std::string HelpMessage()
" -gen=0 " + _("Don't generate coins") + "\n" +
" -datadir=<dir> " + _("Specify data directory") + "\n" +
" -dbcache=<n> " + _("Set database cache size in megabytes (default: 25)") + "\n" +
" -dblogsize=<n> " + _("Set database disk log size in megabytes (default: 100)") + "\n" +
" -timeout=<n> " + _("Specify connection timeout in milliseconds (default: 5000)") + "\n" +
" -proxy=<ip:port> " + _("Connect through socks proxy") + "\n" +
" -socks=<n> " + _("Select the version of socks proxy to use (4-5, default: 5)") + "\n" +
@@ -651,11 +650,23 @@ bool AppInit2()
return InitError(msg);
}
// cache size calculations
size_t nTotalCache = GetArg("-dbcache", 25) << 20;
if (nTotalCache < (1 << 22))
nTotalCache = (1 << 22); // total cache cannot be less than 4 MiB
size_t nBlockTreeDBCache = nTotalCache / 8;
if (nBlockTreeDBCache > (1 << 21))
nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
nTotalCache -= nBlockTreeDBCache;
size_t nCoinDBCache = nTotalCache / 2; // use half of the remaining cache for coindb cache
nTotalCache -= nCoinDBCache;
nCoinCacheSize = nTotalCache / 300; // coins in memory require around 300 bytes
uiInterface.InitMessage(_("Loading block index..."));
printf("Loading block index...\n");
nStart = GetTimeMillis();
pblocktree = new CBlockTreeDB();
pcoinsdbview = new CCoinsViewDB();
pblocktree = new CBlockTreeDB(nBlockTreeDBCache);
pcoinsdbview = new CCoinsViewDB(nCoinDBCache);
pcoinsTip = new CCoinsViewCache(*pcoinsdbview);
if (!LoadBlockIndex())