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.


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


=>       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?

Johannes Lundberg

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