--cacheSize option - applies to recstore storage engine only

1 files changed, 9 insertions, 2 deletions

diff --git a/db/reccache.cpp b/db/reccache.cpp
index 22591f9eb1d..b3ad570fae2 100644
--- a/db/reccache.cpp
+++ b/db/reccache.cpp
@@ -10,9 +10,16 @@ namespace mongo {
 

 RecCache theRecCache(BucketSize);

 

-/* TODO MAKE CONFIGURABLE */

 // 100k * 8KB = 800MB

-unsigned RecCache::MAXNODES = 150000;

+unsigned RecCache::MAXNODES = 50000;

+

+void setRecCacheSize(unsigned mb) {

+    unsigned long long MB = mb;

+    log(2) << "reccache size: " << MB << "MB\n";

+    uassert( "bad cache size", MB > 0 && MB < 1000000 );

+    RecCache::MAXNODES = (unsigned) MB * 1024 * 1024 / 8192;

+    log(3) << "RecCache::MAXNODES=" << RecCache::MAXNODES << '\n';

+}

 

 void writerThread() { 

     sleepsecs(10);