Date: Sun, 1 Jul 2018 09:42:15 +1000 From: Trev <freebsd-arm@sentry.org> To: freebsd-arm@freebsd.org Subject: Re: RPI3 swap experiments Message-ID: <f842b145-c79b-161d-5282-992212f8296f@sentry.org> In-Reply-To: <20180629155131.GA35717@www.zefox.net> References: <20180626222834.GA20270@www.zefox.net> <28012DFB-37A0-461A-BB62-CD3EE61E82F0@yahoo.com> <20180627054027.GA22144@www.zefox.net> <CC72E766-03CB-476C-8F2B-DAAC266CE63D@yahoo.com> <20180627194217.GA27793@www.zefox.net> <C6303FC5-B412-472C-98E4-9A1E45C38535@yahoo.com> <20180628022457.GA30110@www.zefox.net> <7B9D272D-3EDE-46FA-8A1C-AEE65047167C@yahoo.com> <20180628163328.GA33408@www.zefox.net> <51e208b4-9f14-58f7-1e70-6ef8db2c0bed@sentry.org> <20180629155131.GA35717@www.zefox.net>
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bob prohaska wrote on 30/06/2018 01:51:
> On Fri, Jun 29, 2018 at 10:28:25PM +1000, Trev wrote:
>>
>> Jun 29 20:20:35 rpi3 kernel: pid 66844 (c++), uid 0, was killed: out of
>> swap space
>>
>> At the time of "out of swap" only 157M of the 4G swap was in use. The
>> 4GB swap partition is on a 4GB USB2 memory key (da1p1), everything else
>> is on the sdcard. There are no excessively long ms/w being recorded.
>> There are no USB or other related errors.
>>
>
> That's a little surprising, and disturbing. By my experience your setup
> should have run to completion.
>
> Do you see a "too much swap" complaint? I don't know if it's a problem,
> but 4 GB of swap triggers one on my RPi3. 3 GB does not. 2 GB is enough
> to finish -j4 buildworld.
Jun 30 23:32:12 rpi3 kernel: pid 60735 (c++), uid 0, was killed: out of
swap space
No go with 2GB (I deleted the da0p1 swap partition; destroyed da0; then
remade it it with a 2GB p1; then rebooted - no "too much swap"
complaints). Out of swap with 56M of 2GB used. And this was with make
-j2 buildworld.
Here's the top and gstat stats leading up to, at the time of out of swap
and just after:
last pid: 61290; load averages: 2.42, 2.27, 2.19 up 0+12:23:41
23:32:07
33 processes: 2 running, 31 sleeping
Mem: 609M Active, 296K Inact, 95M Laundry, 176M Wired, 97M Buf, 20M Free
Swap: 2048M Total, 47M Used, 2001M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
4 68 0 0 0.0 68 1487 20.9 36.7 da0p1
last pid: 61294; load averages: 2.42, 2.27, 2.19 up 0+12:23:42
23:32:08
33 processes: 2 running, 31 sleeping
Mem: 612M Active, 180K Inact, 94M Laundry, 176M Wired, 97M Buf, 19M Free
Swap: 2048M Total, 49M Used, 1999M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
4 110 0 0 0.0 110 3653 24.3 77.8 da0p1
last pid: 61298; load averages: 2.42, 2.27, 2.19 up 0+12:23:43
23:32:09
33 processes: 2 running, 31 sleeping
Mem: 614M Active, 248K Inact, 90M Laundry, 176M Wired, 97M Buf, 20M Free
Swap: 2048M Total, 53M Used, 1995M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
0 28 0 0 0.0 28 2737 157.7 113.7 da0p1
last pid: 61302; load averages: 2.42, 2.27, 2.19 up 0+12:23:45
23:32:11
33 processes: 2 running, 31 sleeping
Mem: 322M Active, 297M Inact, 88M Laundry, 176M Wired, 97M Buf, 17M Free
Swap: 2048M Total, 55M Used, 1993M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
5 0 0 0 0.0 0 0 0.0 0.0 da0p1
last pid: 61306; load averages: 2.42, 2.27, 2.19 up 0+12:23:46
23:32:12
33 processes: 1 running, 32 sleeping
Mem: 326M Active, 164K Inact, 379M Laundry, 176M Wired, 97M Buf, 19M Free
Swap: 2048M Total, 56M Used, 1992M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
6 0 0 0 0.0 0 0 0.0 0.0 da0p1
last pid: 61310; load averages: 2.39, 2.27, 2.19 up 0+12:23:47
23:32:13
33 processes: 1 running, 32 sleeping
Mem: 331M Active, 184K Inact, 379M Laundry, 176M Wired, 97M Buf, 14M Free
Swap: 2048M Total, 56M Used, 1992M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
6 0 0 0 0.0 0 0 0.0 0.0 da0p1
[OUT OF SWAP at 23:32:14 captured immediately below]
last pid: 61315; load averages: 2.39, 2.27, 2.19 up 0+12:23:48
23:32:14
33 processes: 1 running, 32 sleeping
Mem: 78M Active, 176K Inact, 315M Laundry, 174M Wired, 97M Buf, 332M Free
Swap: 2048M Total, 56M Used, 1992M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
0 48 37 710 126.2 11 1186 341.9 26.4 da0p1
last pid: 61320; load averages: 2.39, 2.27, 2.19 up 0+12:23:49
23:32:15
33 processes: 2 running, 31 sleeping
Mem: 55M Active, 848K Inact, 1644K Laundry, 174M Wired, 97M Buf, 669M Free
Swap: 2048M Total, 48M Used, 2000M Free, 2% Inuse
0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
0 0 0 0 0.0 0 0 0.0 0.0 da0p1
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