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cmd, eth, ethdb, node: prioritise chaindata for resources, bump cache

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This commit is contained in:
Péter Szilágyi
2016-02-19 14:29:19 +02:00
parent 05c86c2c9f
commit e90958cd29
13 changed files with 176 additions and 24 deletions
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23
ethdb/database.go
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@ -39,8 +39,15 @@ var OpenFileLimit = 64
// cacheRatio specifies how the total alloted cache is distributed between the
// various system databases.
var cacheRatio = map[string]float64{
"dapp": 2.0 / 13.0,
"chaindata": 11.0 / 13.0,
"dapp": 0.0,
"chaindata": 1.0,
}
// handleRatio specifies how the total alloted file descriptors is distributed
// between the various system databases.
var handleRatio = map[string]float64{
"dapp": 0.0,
"chaindata": 1.0,
}
type LDBDatabase struct {
@ -62,17 +69,21 @@ type LDBDatabase struct {
}
// NewLDBDatabase returns a LevelDB wrapped object.
func NewLDBDatabase(file string, cache int) (*LDBDatabase, error) {
// Calculate the cache allowance for this particular database
func NewLDBDatabase(file string, cache int, handles int) (*LDBDatabase, error) {
// Calculate the cache and file descriptor allowance for this particular database
cache = int(float64(cache) * cacheRatio[filepath.Base(file)])
if cache < 16 {
cache = 16
}
glog.V(logger.Info).Infof("Alloted %dMB cache to %s", cache, file)
handles = int(float64(handles) * handleRatio[filepath.Base(file)])
if handles < 16 {
handles = 16
}
glog.V(logger.Info).Infof("Alloted %dMB cache and %d file handles to %s", cache, handles, file)
// Open the db and recover any potential corruptions
db, err := leveldb.OpenFile(file, &opt.Options{
OpenFilesCacheCapacity: OpenFileLimit,
OpenFilesCacheCapacity: handles,
BlockCacheCapacity: cache / 2 * opt.MiB,
WriteBuffer: cache / 4 * opt.MiB, // Two of these are used internally
})