var wt = db.serverStatus().wiredTiger.cache;
printjson({
"bytes currently in the cache": wt["bytes currently in the cache"],
"dirty bytes in cache": wt["tracked dirty bytes in the cache"],
"pages read into cache": wt["pages read into cache"],
"pages written from cache": wt["pages written from cache"],
"unmodified pages evicted": wt["unmodified pages evicted"],
"modified pages evicted": wt["internal pages evicted"]
});