Hi, Dave For some case especially under Android, anonymous page sharing is common, for example: 70323000-70e41000 rw-p 00000000 fd:00 120004 /data/dalvik-cache/x86/system@framework@xxxxxxxx Size: 11384 kB Rss: 8840 kB Pss: 927 kB Shared_Clean: 5720 kB Shared_Dirty: 2492 kB Private_Clean: 16 kB Private_Dirty: 612 kB Referenced: 7896 kB Anonymous: 3104 kB PropAnonymous: 697 kB AnonHugePages: 0 kB Swap: 0 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Locked: 0 kB The only Anonymous here is confusing to me. What I really want to know is how many anonymous page is there in Pss. After exposing PropAnonymous, we could know 697/927 is anonymous in Pss. I suppose the Pss - PropAnonymous = Proportional Page cache size for file based memory and we want to break down the page cache into process level, how much page cache each process consumes. Regards, Xiaokang -----Original Message----- From: Hansen, Dave Sent: Saturday, November 08, 2014 5:35 AM To: Qin, Xiaokang; linux-mm@xxxxxxxxx Cc: Yin, Fengwei Subject: Re: [PATCH] proc/smaps: add proportional size of anonymous page On 11/07/2014 12:31 AM, Xiaokang Qin wrote: > The "proportional anonymous page size" (PropAnonymous) of a process is > the count of anonymous pages it has in memory, where each anonymous > page is devided by the number of processes sharing it. This seems like the kind of thing that should just be accounted for in the existing pss metric. Why do we need a new, separate one? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href