Mark Post wrote:
In the context of the original question, I stand by my response. Introducing all sort of hypothetical situations will change just about any answer.
Mark, I don't understand.. The original question was : Will "sync; echo 3 > /proc/sys/vm/drop_caches" have any adverse effect ? Your answer was : "Yes, just because linux no longer treats those pages as being used doesn't mean z/VM sees them as free" - and your statement is that the only solution to ensure linux doesn't eat more memory than it needs to is to adjust the virtual machine's storage size. To which I commented : Would CMMA change this ? To which you answered "no" (with the implication that linux free page management is not connected to z/VM's own free page management - but only a protocol to After which, I looked into the source code and the relevant CP manual and disagree with your analysis since those information seem to dismiss your answer. What "hypothetical" situation are you talking about ? Using CMMA (but that was part of my question) ? Running linux under z/VM (which you already implied in your answer) ? or that flushing buffer/cache will call linux Memory Management free_page() function ? --Ivan ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
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