The release is the latest snapshot memstick image and kernel is from
https://github.com/dumbbell/freebsd/tree/kms-drm-update-38.

I think this problem existed before I changed kernel.

I haven't changed any settings on the filesystem so I assume TRIM is off.

When stopped "bsdtar" is in state "flswai". What does this mean?

/ is 13 GB and 80% full.


--
Johannes Lundberg
BRILLIANTSERVICE CO., LTD.

On Thu, Feb 5, 2015 at 4:21 PM, Allan Jude <allanj...@freebsd.org> wrote:

> On 2015-02-04 20:40, Lundberg, Johannes wrote:
> > By the way,
> >
> > For the second test I first ran portsnap extract without removing the old
> > /usr/ports folder and it ran through quickly without any halts..
> >
> > --
> > Johannes Lundberg
> > BRILLIANTSERVICE CO., LTD.
> >
> > On Thu, Feb 5, 2015 at 10:38 AM, Lundberg, Johannes <
> > johan...@brilliantservice.co.jp> wrote:
> >
> >> I deleted /usr/ports and did a new portsnap extract
> >>
> >> portsnap stopped at /usr/ports/editors/teco
> >>
> >> that folder is empty and the previous folder (editors/tea) is populated
> >> with files.
> >>
> >> portsnap stopped for about 2-3 minutes and during the whole time gstat
> >> showed values like this: (disc io load was constantly fluctuating around
> >> 200 MB/s, not static)
> >>
> >> dT: 1.002s  w: 1.000s
> >>  L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
> >>  1240  43523      0      0    0.0  43523 220158   24.1   99.5| ada0
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p1
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p2
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p3
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p4
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p5
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p6
> >>  1240  43523      0      0    0.0  43523 220158   24.1   99.5| ada0p7
> >>     0      0      0      0    0.0      0      0    0.0    0.0| ada0p8
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gpt/EFI%20System%20Partition
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/ca33c17c-0ef4-4d9b-b2bb-cb37a907504b
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> msdosfs/EFI
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> gpt/Untitled
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/319461e8-0310-47d5-b4d1-6ba5a92cf9a9
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gpt/Recovery%20HD
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/cb9530b7-8872-46d0-b36c-fca667b4e541
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/6ac11466-21c5-4420-85bc-eb1c3c7fa616
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/0047cc59-6b75-4508-98d0-842beafd3164
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> gptid/ddebb168-ac18-11e4-8f9e-283737012e32
> >>     0      0      0      0    0.0      0      0    0.0    0.0|
> >> msdosfs/NO_NAME
> >>
> >>
> >> That is, 100% busy and 200 MB/s...
> >>
> >> top shows
> >>
> >> last pid: 13709;  load averages:  1.18,  0.98,
> >> 0.58
> >> up 0+00:28:36  10:35:38
> >> 27 processes:  1 running, 26 sleeping
> >> CPU:  0.0% user,  0.0% nice, 12.3% system, 11.1% interrupt, 76.6% idle
> >> Mem: 25M Active, 651M Inact, 587M Wired, 30M Cache, 411M Buf, 2566M Free
> >> Swap: 706M Total, 706M Free
> >>
> >>
> >> I have used FreeBSD with SSD plenty and never seen this behavior before.
> >>
> >> --
> >> Johannes Lundberg
> >> BRILLIANTSERVICE CO., LTD.
> >>
> >> On Thu, Feb 5, 2015 at 10:14 AM, Allan Jude <allanj...@freebsd.org>
> wrote:
> >>
> >>> On 2015-02-04 19:29, Lundberg, Johannes wrote:
> >>>> Hi
> >>>>
> >>>> I'm thought I was gonna do some test runs with HEAD on a 2013 Macbook
> >>> Air
> >>>> and noticed some weird behavior regarding disk I/O.
> >>>>
> >>>> This happens both when doing portsnap extract and clone from git
> >>> repository.
> >>>>
> >>>> For example portsnap extract, the extraction process (the output of
> it)
> >>>> suddenly stops, for seconds or maybe even minutes, quite many times
> >>> during
> >>>> the whole extraction process.
> >>>> iostat reports ~200 MB/s on ada0 the whole time during freeze.
> >>>>
> >>>>
> >>>> pciconf:
> >>>>
> >>>> ahci0@pci0:4:0:0:    class=0x010601 card=0x91831b4b chip=0x91831b4b
> >>>> rev=0x14 hdr=0x00
> >>>>     vendor     = 'Marvell Technology Group Ltd.'
> >>>>     class      = mass storage
> >>>>     subclass   = SATA
> >>>>
> >>>>
> >>>> dmesg (relevant lines?):
> >>>>
> >>>> ahci0: <Marvell 88SS9183 AHCI SATA controller> port
> >>>> 0x1028-0x102f,0x1034-0x1037,0x1020-0x1027,0x1030-0x1033,0x1000-0x101f
> >>> mem
> >>>> 0xb0700000-0xb07001ff at device 0.0 on pci4
> >>>> ahci0: AHCI v1.00 with 1 6Gbps ports, Port Multiplier not supported
> >>>> ahcich0: <AHCI channel> at channel 0 on ahci0
> >>>>
> >>>> ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
> >>>> ada0: <APPLE SSD SD0128F A222821> ATA-8 SATA 3.x device
> >>>> ada0: Serial Number 1325A5401681 \^T\^T\^T\^T\^T\^T\^T
> >>>> ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
> >>>> ada0: Command Queueing enabled
> >>>> ada0: 115712MB (236978176 512 byte sectors: 16H 63S/T 16383C)
> >>>> ada0: Previously was known as ad4
> >>>>
> >>>> GEOM: ada0: enabling Boot Camp
> >>>> GEOM: diskid/DISK-1325A5401681%20%14%14%14%14%14%14%14: enabling Boot
> >>> Camp
> >>>>
> >>>>
> >>>> gpart:
> >>>>
> >>>> =>       34  236978109  ada0  GPT  (113G)
> >>>>          34          6        - free -  (3.0K)
> >>>>          40     409600     1  efi  (200M)
> >>>>      409640  174519128     2  apple-hfs  (83G)
> >>>>   174928768    1269536     3  apple-boot  (620M)
> >>>>   176198304       1376        - free -  (688K)
> >>>>   176199680   29782016     4  linux-data  (14G)
> >>>>   205981696    2097152     5  linux-swap  (1.0G)
> >>>>   208078848       1600     6  efi  (800K)
> >>>>   208080448   27261368     7  freebsd-ufs  (13G)
> >>>>   235341816    1445888     8  freebsd-swap  (706M)
> >>>>   236787704     190439        - free -  (93M)
> >>>>
> >>>>
> >>>> One other weird thing is that FreeBSD does not show up in the refind
> >>> boot
> >>>> menu by default, only OSX and Linux. I have to press ESC once to
> reload
> >>> for
> >>>> FreeBSD boot option to show up.. Any clues? Is my partition
> >>> configuration
> >>>> wrong in some way?
> >>>>
> >>>> Thanks!
> >>>> --
> >>>> Johannes Lundberg
> >>>> BRILLIANTSERVICE CO., LTD.
> >>>>
> >>>
> >>> For the disk io bit, try running 'gstat' instead of iostat, and see
> what
> >>> it says.
> >>>
> >>> --
> >>> Allan Jude
> >>>
> >>>
> >>
> >
>
> Is the disk nearly full? very random guess, but maybe it is the SSD
> running its garbage collection when it runs out of space. Do you have
> TRIM enabled?
>
> --
> Allan Jude
>
>

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