Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Jolly Roger Newsgroups: comp.sys.mac.system Subject: Re: Improved memory management? (10.11) Date: 12 Oct 2015 16:43:50 GMT Lines: 71 Message-ID: References: <561aadff$0$4073$c3e8da3$12bcf670@news.astraweb.com> <2POdnQV2KJvyX4fLnZ2dnUU7-aGdnZ2d@giganews.com> <561ae987$0$31192$c3e8da3$a9097924@news.astraweb.com> <-dydnRiSCti2cofLnZ2dnUU7-S2dnZ2d@giganews.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net HAjfYU1yEDIE/idE4O6NWgNTFV+BFgi5y2eIM72BbTZBmP6kUA Cancel-Lock: sha1:O309nFECNS/s0WOhB/SdHgufosY= sha1:P9w/V6HNM7HDanQcK1jyGuPhrCQ= User-Agent: NewsTap/5.0 (iPhone/iPod Touch) Xref: csiph.com comp.sys.mac.system:83280 Alan Browne wrote: > On 2015-10-12 11:45, Lewis wrote: >> In message Alan >> Browne wrote: >>> On 2015-10-11 23:24, Lewis wrote: >>>> In message <-dydnRiSCti2cofLnZ2dnUU7-S2dnZ2d@giganews.com> Alan >>>> Browne wrote: >>>>> On 2015-10-11 18:58, JF Mezei wrote: >>>>>> On 2015-10-11 17:13, Alan Browne wrote: >>>>>> >>>>>>> There's an observable improvement: no swaps occur. >>>>>>> >>>>>> >>>>>> Unless you know why swaps occured before, you can't really >>>>>> know about the imporvements. Your appls may simply be running >>>>>> with less memory and thus perform not as well as if they were >>>>>> allowed to take more memory (and shove other processes to >>>>>> disk while doing that memory intensive task) >>>> >>>> >>>>> The main indication of an issue is the system slowing down. >>>>> Lots of memory leaves lots of free memory. All apps and OS are >>>>> happy. >>>> >>>> Free RAM is wasted RAM. >> >>> Not if it guarantees that swapping will be reduced or not occur at >>> all. >> >> Still wrong. > > How can it be wrong. I've operated this Mac with nice high workloads > (as needed) over periods of weeks with swap and compression disabled > with no discernible effect. > >>> It's a cheap investment (these days) in making a computer run >>> swiftly because you avoid swaps. >> >> Still wrong. > > Not at all. History should be your guide. The ratio of loaded OS to > RAM has fallen considerably over the decades, as has the ratio of loaded > app size and memory need to installed RAM. This doesn't match all uses > cases, of course, but that number will just grow as well. > > > >> There will *ALWAYS* be swap. >> >> Just checked my iMac with 24GB of RAM. According to memory_pressure: >> >> System-wide memory free percentage: 89% >> >> 4GB of Swap. 2.4GB of compressed memory. Memory pressure graph is >> nearly invisible the green line is so thin. > > Coincidentally, mine (24 GB) is presently 89% free too. But mem > compression is visible (about 1/6th of the vertical scale and swap at > 350 MB; compressed at 400 MB. > > With 89% "free" of 24 GB, swap isn't really needed. *YAWN* You guys are still here? -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR