Date: Tue, 7 Mar 2017 19:48:08 +0800 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: "stable@freebsd.org" <stable@freebsd.org> Subject: Re: slow machine, swap in use, but more than 5GB of RAM inactive Message-ID: <20170307194808.75b0064b@X220.alogt.com> In-Reply-To: <20170307070242.GO15630@zxy.spb.ru> References: <20170307101935.4c04ad5e@X220.alogt.com> <20170307070242.GO15630@zxy.spb.ru>
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Hi, On Tue, 7 Mar 2017 10:02:42 +0300 Slawa Olhovchenkov <slw@zxy.spb.ru> wrote: > On Tue, Mar 07, 2017 at 10:19:35AM +0800, Erich Dollansky wrote: > > > I wonder about the slow speed of my machine while top shows ample > > inactive memory: > > > > last pid: 85287; load averages: 2.56, 2.44, 1.68 > > up 6+10:24:45 10:13:36 191 processes: 5 running, 186 sleeping > > CPU 0: 47.1% user, 0.0% nice, 51.4% system, 0.0% interrupt, 1.6% > > idle CPU 1: 38.4% user, 0.0% nice, 60.4% system, 0.0% interrupt, > > 1.2% idle CPU 2: 38.8% user, 0.0% nice, 59.2% system, 0.0% > > interrupt, 2.0% idle CPU 3: 45.5% user, 0.0% nice, 51.0% system, > > 0.4% interrupt, 3.1% idle Mem: 677M Active, 5600M Inact, 1083M > > Wired, 178M Cache, 816M Buf,301M Free > > Swap: 16G Total, 1352M Used, 15G Free, 8% Inuse > > > > The swap space in use can be explained by large compilations done > > recently. Why is the inactive memory not put to use. > > > > I do not want to restart the machine. So, if I could help find the > > source of the problem, I would do. > > inactive is not 'not used' memory. > this is just pages don't touched in last 10(?) seconds, but all of > this allocated (such as malloc, mmap, sendfile) to application > (userland programs). something changed then since my last update of FreeBSD. The machine is currently on 10.3-STABLE FreeBSD 10.3-STABLE #2 r313849: Fri Feb 17. It is on 10 since 2012. It was never this slow. Anyway, I will reboot it soon into a new kernel and see what will happen then. Thanks! Erich
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