randall r schulz rgpoguasonicnet sunday 10 february 2008 0827 anders johansson wrote sunday 10 february 2008 172005 randall r schulz wrote lastly seems sort selective ram refresh suggest linux would power _disadvantage_ since tries keep much ram possible filled potentially useful data windows seems try free possible point memory used os way doesnt show used one application looks like op describing bug kmail perhaps misunderstood thought tom saying memory holding useful data ram cells make unused memory need refreshed thus saving power though seems wouldnt much think would problematic implement since would constrained constrain organization chips dimms row column layout within individual ram chips extra complexity kernel software mainboard circuitry entails combined modest savings available suggest impractical idea applications memory cant used applications way page cache memory gone rest system application caches aggressively without giving user chance limit sink system totally ive seen kmail eat memoryswap system could also memory leak caching ive never seen never leave kmail running end work day dont usually leave running im away office may enough prevent seeing symptoms also make zero use imap time time often kmail dies usually kde crash manager kicks think recall cases kmail simply vanishes crashes seem least somewhat correlated using find messages command kmail must manage mailbox index files pretty well though ive never corruption following crashes anders madness takes toll randall schulz tue 05 aug 2008 170037 0800 opensuse memory leakage normal huge amount usage ram memory 2gb free 121 mb