In case you run into this like I did

Useful Links:

A VERY Good Performance Tuning Doc: https://calomel.org/freebsd_network_tuning.html

https://forum.opnsense.org/index.php?topic=6590.0

http://virtualvillage.cloud/?p=177

http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/netperf/tuning-tcp.shtml

http://web.synametrics.com/app?operation=blog&st=dispblog&fn=00000000019_1413406728705&BloggerName=mike

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/configtuning-kernel-limits.html

https://lists.freebsd.org/pipermail/freebsd-performance/2009-December/003909.html

https://proj.sunet.se/E2E/tcptune.html

And another one:
http://45drives.blogspot.com/2016/05/how-to-tune-nas-for-direct-from-server.html

https://www.softnas.com/docs/softnas/v3/html/performance_tuning_for_vmware_vsphere_print.html

https://johnkeen.tech/freenas-11-2-and-esxi-6-7-iscsi-tutorial/

https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-multipathing-configuration-software-iscsi-port-binding-white-paper.pdf

https://www.ixsystems.com/community/threads/iscsi-multipathing-slower-then-single-path-for-writes.22475/

https://forums.servethehome.com/index.php?threads/esxi-6-5-with-zfs-backed-nfs-datastore-optane-latency-aio-benchmarks.24099/

https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/performance/vsphere-esxi-vcenter-server-67-performance-best-practices.pdf

http://austit.com/faq/323-enable-pnic-rss

http://www.virtubytes.com/2017/10/12/esxcli-nic-driver-firmware/

https://kb.vmware.com/s/article/50106444

https://gtacknowledge.extremenetworks.com/articles/Solution/000038545

https://bogiip.blogspot.com/2018/06/replace-esxi-ixgben-driver-with-ixbge.html

https://tinkertry.com/how-to-install-intel-x552-vib-on-esxi-6-on-superserver-5028d-tn4t

https://www.ixsystems.com/community/threads/10gbe-esxi-6-5-vmxnet-3-performance-is-poor-with-iperf3-tests.63173/

https://www.virtuallyghetto.com/2016/03/quick-tip-iperf-now-available-on-esxi.html

https://superuser.com/questions/959222/freebsd-turning-off-offloading

https://www.ixsystems.com/community/threads/bottleneck-in-iscsi-lans-speed.24363/

https://www.cyberciti.biz/faq/freebsd-command-to-find-sata-link-speed/

https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/iscsi_design_deploy-whitepaper.pdf

https://www.reddit.com/r/zfs/comments/8l20f5/zfs_record_size_is_smaller_really_better/

http://open-zfs.org/wiki/Performance_tuning

https://jrs-s.net/2019/04/03/on-zfs-recordsize/

https://www.reddit.com/r/zfs/comments/7pfutp/zfs_pool_planning_for_vm_storage/dsh1u3j/

https://www.reddit.com/r/zfs/comments/8pm7i0/8x_seagate_12tb_in_raidz2_poor_readwrite/


H730:

Note: H730 works in pass-through mode BUT, you will see dmesg report incorrect SAS/SATA speeds (150.00 MB/s) of drives on boot in FreeNAS. This isn’t erroneous, these are the settings the drives will operate at no matter what the H730 says in the BIOS/Device Config that the drive negotiated speed at.

Go buy an HBA330! This problem will go away, FreeNAS will report the correct speed. There is currently no way to flash a H730 away from Dell firmware to LSI (IT Firmware)… (Feb 2020, If you are reading this and have found a way, please comment!)

Credit: https://www.ixsystems.com/community/threads/run_interrupt_driven_hooks-problem-with-mrsas-driver.61072/post-526236

edit /boot/loader.conf and add: hw.pci.honor_msi_blacklist=0

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203874https://redmine.ixsystems.com/issues/26733

If anyone is still looking to resolve this issue, it’s not an mrsas driver issue. It’s apparently a blacklist that still exists in FreeBSD to disable MSI-X when it detects it’s running in VMware due to some old limitation that used to exist in VMware. To find this work around I noticed the “mrsas0 MSI-x setup failed” in dmesg and how it would fall back to legacy interrupts. So I chased down MSI-x and VMware and came across the first link in bugs.freebsd.org. I believe this affects mrsas and all HBAs that use MSI-x.

I have confirmed this working on the following setup:
Dell R430
Perc H730 configured in HBA mode, cache disabled, passthrough via vmware
VMware vSphere 6.7
FreeNAS 11.2 U3 test VM with 10 vcpus and 16GB RAM.

To install FreeNAS first time either configure with 1 vcpu, then increase after installation and editing loader.conf, or detach the HBA, install FreeNAS and attach HBA after editing loader.conf post install.

Note: Changing /boot/loader.conf does not always work for some, however adding the variable to the system tunables did work.


Optane 900P:

Credit: https://redmine.ixsystems.com/issues/26508#note-62

I found a simple fix for this issue by adding the Optane 900P device ID to passthru.map

– ssh to ESXi
– edit /etc/vmware/passthru.map
– add following lines at the end of the file:

# Intel Optane 900P
8086 2700 d3d0 false

– restart hypervisor

I can now pass through the 900P to Freenas 11.3 without issue

To over-provision the free space on the drives down to max ZIL size of 16 GB and assign write cache to this partition (Leaving free unallocated space on the drive to allow for higher write performance consistency and wear leveling by internal Intel firmware). This has the added benefit of using another 16 GB partition on the drive as another ZIL for another pool if you’d like, just understand, “What eggs you are putting in what basket” if a drive should fail. In the below example, each pool would get it’s own two partitions from the 900P’s in a mirrored config. But be warned, there is only so much bandwidth per device and all partitions need to share this bandwidth, so you may run into issues with write contention should more than one pool slam the devices with writes at a time.
Credit: https://www.ixsystems.com/community/threads/sharing-slog-devices-striped-ssds-partitioned-for-two-pools.62787/

PoolX
-nvd0p1
-nvd1p1
PoolY
-nvd0p2
-nvd1p2
etc…

# Make sure drives have all blocks unallocated, this is destructive!!!
# Blocks on drive must be completely clear to allow wear leveling to see them as "free space"
# Make sure you have the right device! PCIe devices may not enumerate in the order you expect

gpart destroy -F nvd0 
gpart destroy -F nvd1 

gpart create -s GPT nvd0
gpart create -s GPT nvd1

gpart add -t freebsd-zfs -a 1m -l sloga0 -s 16G nvd0
gpart add -t freebsd-zfs -a 1m -l slogb0 -s 16G nvd1

# To read drive partition IDs
glabel status | grep nvd0
#Output
#                                gpt/sloga0     N/A  nvd0p1
#gptid/b47f75d5-4d17-11ea-aa55-0050568b4d0b     N/A  nvd0p1

glabel status | grep nvd1
#Output
#                                gpt/slogb0     N/A  nvd1p1
#gptid/eff3f7f8-4d18-11ea-aa55-0050568b4d0b     N/A  nvd1p1

#Then use these IDs to add drives to pool (not currently available via 11.3 FreeNAS UI)
zpool add tank log mirror gptid/b47f75d5-4d17-11ea-aa55-0050568b4d0b gptid/eff3f7f8-4d18-11ea-aa55-0050568b4d0b 

# If you had a second pool
gpart add -t freebsd-zfs -a 1m -l sloga1 -s 16G nvd0
gpart add -t freebsd-zfs -a 1m -l slogb1 -s 16G nvd1

# Then continue to find drive ID's and add them to the second pool, etc...

# Helpful commands
gpart show -l nvd0
=>       40  937703008  nvd0  GPT  (447G)
         40       2008        - free -  (1.0M)
       2048   33554432     1  sloga0  (16G)
   33556480  904146568        - free -  (431G)

gpart show -l nvd2
=>       40  937703008  nvd2  GPT  (447G)
         40       2008        - free -  (1.0M)
       2048   33554432     1  slogb0  (16G)
   33556480  904146568        - free -  (431G)

Intel X520-DA2 Tweaks (ESXi):

[root@SilverJet:~] esxcli network nic get -n vmnic0
   Advertised Auto Negotiation: false
   Advertised Link Modes: 10000BaseTwinax/Full
   Auto Negotiation: false
   Cable Type: DA
   Current Message Level: -1
   Driver Info: 
         Bus Info: 0000:01:00:0
         Driver: ixgben
         Firmware Version: 0x800003df
         Version: 1.7.1.16
   Link Detected: true
   Link Status: Up 
   Name: vmnic0
   PHYAddress: 0
   Pause Autonegotiate: false
   Pause RX: true
   Pause TX: true
   Supported Ports: DA
   Supports Auto Negotiation: false
   Supports Pause: true
   Supports Wakeon: false
   Transceiver: 
   Virtual Address: 00:50:56:d5:94:70
   Wakeon: None

[root@SilverJet:~] esxcli software vib install -v https://cdn.tinkertry.com/files/net-ixgbe_4.5.3-1OEM.600.0.0.2494585.vib --no-sig-check
Installation Result
   Message: The update completed successfully, but the system needs to be rebooted for the changes to be effective.
   Reboot Required: true
   VIBs Installed: INT_bootbank_net-ixgbe_4.5.3-1OEM.600.0.0.2494585
   VIBs Removed: INT_bootbank_net-ixgbe_4.4.1-1OEM.600.0.0.2159203
   VIBs Skipped: 

[root@SilverJet:~] reboot
[root@SilverJet:~] esxcli system module set -e=true -m=ixgbe
[root@SilverJet:~] esxcli system module set -e=false -m=ixgben
[root@SilverJet:~] reboot

[root@SilverJet:~] esxcli network nic get -n vmnic0
   Advertised Auto Negotiation: false
   Advertised Link Modes: 10000BaseT/Full
   Auto Negotiation: false
   Cable Type: DA
   Current Message Level: 7
   Driver Info: 
         Bus Info: 0000:01:00.0
         Driver: ixgbe
         Firmware Version: 0x800003df, 1.2074.0
         Version: 4.5.3-iov
   Link Detected: true
   Link Status: Up 
   Name: vmnic0
   PHYAddress: 0
   Pause Autonegotiate: false
   Pause RX: true
   Pause TX: true
   Supported Ports: FIBRE
   Supports Auto Negotiation: false
   Supports Pause: true
   Supports Wakeon: false
   Transceiver: external
   Virtual Address: 00:50:56:d5:94:70
   Wakeon: None

All in One (AIO) Considerations:

Make sure you MATCH the MAC of the virtual NICs in the FreeNAS VM to the vmkernel port group with the proper subnet for your storage network! If you do not, and add a second or third NIC to the VM, FreeBSD will enumerate the NICs randomly; your vmx0 that used to have the web interface may now become vmx1, against your inclinations!


iSCSI:

Credit (Page 12): https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-multipathing-configuration-software-iscsi-port-binding-white-paper.pdf

If your iSCSI speed really sucks (Like 40 MB/s over a 10 Gbps link) or you are getting failed vMotions, chances are you’ve got paths that aren’t actually paths…

iSCSI Re-login:
If you have an already established iSCSI session before port binding configuration, you can remove the existing iSCSI sessions and log in again for the port binding configuration to take effect.

Note: vmhbaXX is the software iSCSI adapter vmhba ID
To list the existing iSCSI sessions, run the following command:

esxcli iscsi session list --adapter vmhbaXX

To remove existing iSCSI sessions, run the following command
MAKE SURE YOU DO NOT HAVE ACTIVE IO:

esxcli iscsi session remove --adapter vmhbaXX 

To enable sessions as per the current iSCSI configuration, run the following command:

esxcli iscsi session add --adapter vmhbaXX

Or all at once:

esxcli iscsi session remove --adapter vmhba64 && esxcli iscsi session add --adapter vmhba64

ESXi 6 supports 512 logical and physical block size only. ESXi 6.5 supports logical 512 and physical 512 or 4096 size only. In FreeNAS you must disable physical block size reporting on the iSCSI extent.

VMware iSCSI best practice guide:
http://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/whitepaper/iscsi_design_deploy-whitepaper.pdf

Using MPIO with FreeNAS and VMware ESXi you should NOT use VMkernal port binding for iSCSI.
Read here: https://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=2038869

For each ESXi cluster that will be sharing a LUN, you would create a portal group in FreeNAS that has “extra portal IP” configured on it for each interface on FreeNAS that is to be used for iSCSI traffic. – TODO: Research

On the ESXi side, you would NOT create VMkernal port binding configuration. You would simply add each of the portal IP’s to the static discovery targets. Dynamic discovery works too in ESXi 6.7.

Use Jumbo frames if supported by your network equipment. Slight performance increase here.

Set ZFS sync option on zvol to “sync=always” for data in flight safety. This will slow down your performance a bit, but can be mitigated by using a very low latency device as your zpool SLOG. Like an Optane 900P.

If using FreeNAS 9.10+, Delay Ack:enabled, https://bugs.pcbsd.org/issues/15920 – TODO: Research

Before connecting a FreeNAS LUN to your ESXi hosts, run the following command on each ESXi host and then reboot and connect to the LUNs. This changes the VMware roundrobin PSP to change paths every operation. Good for small environments, no need for large environments.

esxcli storage nmp satp rule add -s "VMW_SATP_ALUA" -V "FreeNAS" -M "iSCSI Disk" -P "VMW_PSP_RR" -O "iops=1" -c "tpgs_on" -e "FreeNAS array with ALUA support"

Adjusting the IOPS parameter:

Credit: https://kb.vmware.com/s/article/2069356

To adjust the IOPS parameter from the default 1000 to 1, run this command (May not be required if creating a nmp rule in ESXi, I’ve noticed that if you set RoundRobin like below and reboot host, without the rule above set, the iSCSI LUNs revert to non-RoundRobin):

In ESXi 5.x/6.x:

for i in `esxcfg-scsidevs -c |awk '{print $1}' | grep naa.xxxx`; do esxcli storage nmp psp roundrobin deviceconfig set --type=iops --iops=1 --device=$i; done

Where, .xxxx matches the first few characters of your naa IDs. To verify if the changes are applied, run this command:

esxcli storage nmp device list

You see output similar to:

Path Selection Policy: VMW_PSP_RR
Path Selection Policy Device Config: {policy=iops,iops=1,bytes=10485760,useANO=0;lastPathIndex=1: NumIOsPending=0,numBytesPending=0}
Path Selection Policy Device Custom Config:
Working Paths: vmhba33:C1:T4:L0, vmhba33:C0:T4:L0

Helpful commands:

zpool status tank
zpool iostat -v tank -t 1

zfs-stats -a
zfs set redundant_metadata=most tank
zfs get all tank
zfs get all tank/vmware_iscsi
zpool remove tank mirror-6 <Log Device Mirror; get with status on pool>

fio --name=seqwrite --rw=write --direct=0 --iodepth=32 --bs=128k --numjobs=8 --size=8G --group_reporting

iostat -xz -w 10 -c 10

Results:

So finally I figured a few things out! A little tuning goes a long way, no sync=disabled required (sync=always set on pool and zvol), iSCSI MPIO windows bench below, most tuning params below are default:

root@freenas[/mnt/tank]# fio --name=seqwrite --rw=write --direct=0 --iodepth=32 --bs=1M --numjobs=8 --size=8G --group_reporting
seqwrite: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=32
...
fio-3.16
Starting 8 processes
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
seqwrite: Laying out IO file (1 file / 8192MiB)
Jobs: 4 (f=4): [_(2),W(1),_(1),W(1),_(1),W(2)][97.4%][w=434MiB/s][w=434 IOPS][eta 00m:02s]
seqwrite: (groupid=0, jobs=8): err= 0: pid=2686: Mon Mar 16 13:41:52 2020
  write: IOPS=872, BW=873MiB/s (915MB/s)(64.0GiB/75083msec)
    clat (usec): min=706, max=5811.9k, avg=8590.36, stdev=87062.16
     lat (usec): min=732, max=5811.0k, avg=8679.94, stdev=87063.26
    clat percentiles (usec):
     |  1.00th=[   1172],  5.00th=[   1713], 10.00th=[   2147],
     | 20.00th=[   3130], 30.00th=[   3818], 40.00th=[   4490],
     | 50.00th=[   5538], 60.00th=[   6915], 70.00th=[   8455],
     | 80.00th=[  10028], 90.00th=[  11863], 95.00th=[  13435],
     | 99.00th=[  19006], 99.50th=[  22414], 99.90th=[ 141558],
     | 99.95th=[ 834667], 99.99th=[4462740]
   bw (  MiB/s): min=   15, max= 3272, per=100.00%, avg=1120.06, stdev=78.10, samples=925
   iops        : min=   11, max= 3272, avg=1117.79, stdev=78.16, samples=925
  lat (usec)   : 750=0.01%, 1000=0.48%
  lat (msec)   : 2=8.03%, 4=24.23%, 10=47.40%, 20=19.06%, 50=0.66%
  lat (msec)   : 100=0.01%, 250=0.03%, 500=0.02%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2000=0.01%, >=2000=0.04%
  cpu          : usr=1.06%, sys=26.40%, ctx=841741, majf=0, minf=0
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,65536,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=32
Run status group 0 (all jobs):
  WRITE: bw=873MiB/s (915MB/s), 873MiB/s-873MiB/s (915MB/s-915MB/s), io=64.0GiB (68.7GB), run=75083-75083msec
root@freenas[~]# zfs-stats -a
------------------------------------------------------------------------
sysctl: unknown oid 'kstat.zfs.misc.arcstats.l2_writes_hdr_miss'
sysctl: unknown oid 'kstat.zfs.misc.arcstats.recycle_miss'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.bogus_streams'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.colinear_hits'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.colinear_misses'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.reclaim_failures'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.reclaim_successes'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.streams_noresets'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.streams_resets'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.stride_hits'
sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.stride_misses'
ZFS Subsystem Report Mon Mar 16 13:36:28 2020
----------------------------------------------------------------------
System Information:
Kernel Version: 1103000 (osreldate)
 Hardware Platform: amd64
 Processor Architecture: amd64
FreeBSD 11.3-RELEASE-p6 #0 r325575+d5b100edfcb(HEAD): Fri Feb 21 18:53:26 UTC 2020     root
 1:36PM  up 41 mins, 2 users, load averages: 0.07, 0.33, 0.94
----------------------------------------------------------------------
System Memory Statistics:
 Physical Memory: 130934.25M
 Kernel Memory: 1258.42M
 DATA: 96.34% 1212.49M
 TEXT: 3.65% 45.93M
----------------------------------------------------------------------
ZFS pool information:
 Storage pool Version (spa): 5000
 Filesystem Version (zpl): 5
----------------------------------------------------------------------
ARC Misc:
 Deleted: 30
 Recycle Misses: 0
 Mutex Misses: 338
 Evict Skips: 338
ARC Size:
 Current Size (arcsize): 61.95% 73001.27M
 Target Size (Adaptive, c): 81.04% 95502.93M
 Min Size (Hard Limit, c_min): 13.42% 15825.16M
 Max Size (High Water, c_max): ~7:1 117836.95M
ARC Size Breakdown:
 Recently Used Cache Size (p): 93.75% 89533.99M
 Freq. Used Cache Size (c-p): 6.25% 5968.93M
ARC Hash Breakdown:
 Elements Max: 3668687
 Elements Current: 99.81% 3661799
 Collisions: 1543019
 Chain Max: 0
 Chains: 346056
ARC Eviction Statistics:
 Evicts Total: 180546560
 Evicts Eligible for L2: 97.74% 176477184
 Evicts Ineligible for L2: 2.25% 4069376
 Evicts Cached to L2: 34813390336
ARC Efficiency
 Cache Access Total: 24117584
 Cache Hit Ratio: 83.83% 20219405
 Cache Miss Ratio: 16.16% 3898179
 Actual Hit Ratio: 83.19% 20065299
 Data Demand Efficiency: 59.37%
 Data Prefetch Efficiency: 46.46%
CACHE HITS BY CACHE LIST:
   Most Recently Used (mru): 37.18% 7518270
   Most Frequently Used (mfu): 62.05% 12547029
   MRU Ghost (mru_ghost): 1.07% 217132
   MFU Ghost (mfu_ghost): 0.03% 6092
CACHE MISSES BY DATA TYPE:
   Demand Data: 94.30% 3676086
   Prefetch Data: 4.57% 178270
   Demand Metadata: 1.04% 40822
   Prefetch Metadata: 0.07% 3001
----------------------------------------------------------------------
L2 ARC Summary:
 Low Memory Aborts: 2
 R/W Clashes: 0
 Free on Write: 21
L2 ARC Size:
 Current Size: (Adaptive) 113743.66M
 Header Size: 0.00% 0.00M
L2 ARC Read/Write Activity:
 Bytes Written: 249373.65M
 Bytes Read: 4089.92M
L2 ARC Breakdown:
 Access Total: 3888009
 Hit Ratio: 5.26% 204685
 Miss Ratio: 94.73% 3683324
 Feeds: 2364
WRITES:
   Sent Total: 100.00% 1851
----------------------------------------------------------------------
VDEV Cache Summary:
 Access Total: 15732
 Hits Ratio: 53.22% 8373
 Miss Ratio: 46.77% 7359
 Delegations: 1439
f_float_divide: 0 / 0: division by 0
f_float_divide: 0 / 0: division by 0
f_float_divide: 0 / 0: division by 0
f_float_divide: 0 / 0: division by 0
----------------------------------------------------------------------
File-Level Prefetch Stats (DMU):
DMU Efficiency:
 Access Total: 8795774
 Hit Ratio: 0.35% 31426
 Miss Ratio: 99.64% 8764348
 Colinear Access Total: 0
 Colinear Hit Ratio: 0.00% 0
 Colinear Miss Ratio: 0.00% 0
Stride Access Total: 0
 Stride Hit Ratio: 0.00% 0
 Stride Miss Ratio: 0.00% 0
DMU misc:
 Reclaim successes: 0
 Reclaim failures: 0
 Stream resets: 0
 Stream noresets: 0
 Bogus streams: 0
----------------------------------------------------------------------
ZFS Tunable (sysctl):
 kern.maxusers=8519
 vfs.zfs.vol.immediate_write_sz=32768
 vfs.zfs.vol.unmap_sync_enabled=0
 vfs.zfs.vol.unmap_enabled=1
 vfs.zfs.vol.recursive=0
 vfs.zfs.vol.mode=2
 vfs.zfs.sync_pass_rewrite=2
 vfs.zfs.sync_pass_dont_compress=5
 vfs.zfs.sync_pass_deferred_free=2
 vfs.zfs.zio.dva_throttle_enabled=1
 vfs.zfs.zio.exclude_metadata=0
 vfs.zfs.zio.use_uma=1
 vfs.zfs.zio.taskq_batch_pct=75
 vfs.zfs.zil_slog_bulk=786432
 vfs.zfs.zil_nocacheflush=0
 vfs.zfs.zil_replay_disable=0
 vfs.zfs.version.zpl=5
 vfs.zfs.version.spa=5000
 vfs.zfs.version.acl=1
 vfs.zfs.version.ioctl=7
 vfs.zfs.debug=0
 vfs.zfs.super_owner=0
 vfs.zfs.immediate_write_sz=32768
 vfs.zfs.cache_flush_disable=0
 vfs.zfs.standard_sm_blksz=131072
 vfs.zfs.dtl_sm_blksz=4096
 vfs.zfs.min_auto_ashift=12
 vfs.zfs.max_auto_ashift=13
 vfs.zfs.vdev.def_queue_depth=32
 vfs.zfs.vdev.queue_depth_pct=1000
 vfs.zfs.vdev.write_gap_limit=0
 vfs.zfs.vdev.read_gap_limit=32768
 vfs.zfs.vdev.aggregation_limit_non_rotating=131072
 vfs.zfs.vdev.aggregation_limit=1048576
 vfs.zfs.vdev.initializing_max_active=1
 vfs.zfs.vdev.initializing_min_active=1
 vfs.zfs.vdev.removal_max_active=2
 vfs.zfs.vdev.removal_min_active=1
 vfs.zfs.vdev.trim_max_active=64
 vfs.zfs.vdev.trim_min_active=1
 vfs.zfs.vdev.scrub_max_active=2
 vfs.zfs.vdev.scrub_min_active=1
 vfs.zfs.vdev.async_write_max_active=10
 vfs.zfs.vdev.async_write_min_active=1
 vfs.zfs.vdev.async_read_max_active=3
 vfs.zfs.vdev.async_read_min_active=1
 vfs.zfs.vdev.sync_write_max_active=10
 vfs.zfs.vdev.sync_write_min_active=10
 vfs.zfs.vdev.sync_read_max_active=10
 vfs.zfs.vdev.sync_read_min_active=10
 vfs.zfs.vdev.max_active=1000
 vfs.zfs.vdev.async_write_active_max_dirty_percent=60
 vfs.zfs.vdev.async_write_active_min_dirty_percent=30
 vfs.zfs.vdev.mirror.non_rotating_seek_inc=1
 vfs.zfs.vdev.mirror.non_rotating_inc=0
 vfs.zfs.vdev.mirror.rotating_seek_offset=1048576
 vfs.zfs.vdev.mirror.rotating_seek_inc=5
 vfs.zfs.vdev.mirror.rotating_inc=0
 vfs.zfs.vdev.trim_on_init=1
 vfs.zfs.vdev.bio_delete_disable=0
 vfs.zfs.vdev.bio_flush_disable=0
 vfs.zfs.vdev.cache.bshift=16
 vfs.zfs.vdev.cache.size=16384
 vfs.zfs.vdev.cache.max=16384
 vfs.zfs.vdev.validate_skip=0
 vfs.zfs.vdev.max_ms_shift=38
 vfs.zfs.vdev.default_ms_shift=29
 vfs.zfs.vdev.max_ms_count_limit=131072
 vfs.zfs.vdev.min_ms_count=16
 vfs.zfs.vdev.max_ms_count=200
 vfs.zfs.vdev.trim_max_pending=10000
 vfs.zfs.txg.timeout=120
 vfs.zfs.trim.enabled=1
 vfs.zfs.trim.max_interval=1
 vfs.zfs.trim.timeout=30
 vfs.zfs.trim.txg_delay=2
 vfs.zfs.space_map_ibs=14
 vfs.zfs.spa_allocators=4
 vfs.zfs.spa_min_slop=134217728
 vfs.zfs.spa_slop_shift=5
 vfs.zfs.spa_asize_inflation=24
 vfs.zfs.deadman_enabled=1
 vfs.zfs.deadman_checktime_ms=60000
 vfs.zfs.deadman_synctime_ms=600000
 vfs.zfs.debug_flags=0
 vfs.zfs.debugflags=0
 vfs.zfs.recover=0
 vfs.zfs.spa_load_verify_data=1
 vfs.zfs.spa_load_verify_metadata=1
 vfs.zfs.spa_load_verify_maxinflight=10000
 vfs.zfs.max_missing_tvds_scan=0
 vfs.zfs.max_missing_tvds_cachefile=2
 vfs.zfs.max_missing_tvds=0
 vfs.zfs.spa_load_print_vdev_tree=0
 vfs.zfs.ccw_retry_interval=300
 vfs.zfs.check_hostid=1
 vfs.zfs.mg_fragmentation_threshold=85
 vfs.zfs.mg_noalloc_threshold=0
 vfs.zfs.condense_pct=200
 vfs.zfs.metaslab_sm_blksz=4096
 vfs.zfs.metaslab.bias_enabled=1
 vfs.zfs.metaslab.lba_weighting_enabled=1
 vfs.zfs.metaslab.fragmentation_factor_enabled=1
 vfs.zfs.metaslab.preload_enabled=1
 vfs.zfs.metaslab.preload_limit=3
 vfs.zfs.metaslab.unload_delay=8
 vfs.zfs.metaslab.load_pct=50
 vfs.zfs.metaslab.min_alloc_size=33554432
 vfs.zfs.metaslab.df_free_pct=4
 vfs.zfs.metaslab.df_alloc_threshold=131072
 vfs.zfs.metaslab.debug_unload=0
 vfs.zfs.metaslab.debug_load=0
 vfs.zfs.metaslab.fragmentation_threshold=70
 vfs.zfs.metaslab.force_ganging=16777217
 vfs.zfs.free_bpobj_enabled=1
 vfs.zfs.free_max_blocks=18446744073709551615
 vfs.zfs.zfs_scan_checkpoint_interval=7200
 vfs.zfs.zfs_scan_legacy=0
 vfs.zfs.no_scrub_prefetch=0
 vfs.zfs.no_scrub_io=0
 vfs.zfs.resilver_min_time_ms=3000
 vfs.zfs.free_min_time_ms=1000
 vfs.zfs.scan_min_time_ms=1000
 vfs.zfs.scan_idle=50
 vfs.zfs.scrub_delay=4
 vfs.zfs.resilver_delay=2
 vfs.zfs.top_maxinflight=128
 vfs.zfs.delay_scale=500000
 vfs.zfs.delay_min_dirty_percent=98
 vfs.zfs.dirty_data_sync_pct=95
 vfs.zfs.dirty_data_max_percent=10
 vfs.zfs.dirty_data_max_max=17179869184
 vfs.zfs.dirty_data_max=17179869184
 vfs.zfs.max_recordsize=1048576
 vfs.zfs.default_ibs=15
 vfs.zfs.default_bs=9
 vfs.zfs.zfetch.array_rd_sz=1048576
 vfs.zfs.zfetch.max_idistance=67108864
 vfs.zfs.zfetch.max_distance=33554432
 vfs.zfs.zfetch.min_sec_reap=2
 vfs.zfs.zfetch.max_streams=8
 vfs.zfs.prefetch_disable=0
 vfs.zfs.send_holes_without_birth_time=1
 vfs.zfs.mdcomp_disable=0
 vfs.zfs.per_txg_dirty_frees_percent=30
 vfs.zfs.nopwrite_enabled=1
 vfs.zfs.dedup.prefetch=1
 vfs.zfs.dbuf_cache_lowater_pct=10
 vfs.zfs.dbuf_cache_hiwater_pct=10
 vfs.zfs.dbuf_metadata_cache_overflow=0
 vfs.zfs.dbuf_metadata_cache_shift=6
 vfs.zfs.dbuf_cache_shift=5
 vfs.zfs.dbuf_metadata_cache_max_bytes=2074236096
 vfs.zfs.dbuf_cache_max_bytes=4148472192
 vfs.zfs.arc_min_prescient_prefetch_ms=6
 vfs.zfs.arc_min_prefetch_ms=1
 vfs.zfs.l2c_only_size=0
 vfs.zfs.mfu_ghost_data_esize=289089536
 vfs.zfs.mfu_ghost_metadata_esize=5746176
 vfs.zfs.mfu_ghost_size=294835712
 vfs.zfs.mfu_data_esize=1775566848
 vfs.zfs.mfu_metadata_esize=1676800
 vfs.zfs.mfu_size=7225051136
 vfs.zfs.mru_ghost_data_esize=25292875264
 vfs.zfs.mru_ghost_metadata_esize=0
 vfs.zfs.mru_ghost_size=25292875264
 vfs.zfs.mru_data_esize=67462772224
 vfs.zfs.mru_metadata_esize=123261440
 vfs.zfs.mru_size=68306886144
 vfs.zfs.anon_data_esize=0
 vfs.zfs.anon_metadata_esize=0
 vfs.zfs.anon_size=140993536
 vfs.zfs.l2arc_norw=0
 vfs.zfs.l2arc_feed_again=1
 vfs.zfs.l2arc_noprefetch=1
 vfs.zfs.l2arc_feed_min_ms=200
 vfs.zfs.l2arc_feed_secs=1
 vfs.zfs.l2arc_headroom=2
 vfs.zfs.l2arc_write_boost=2500000000
 vfs.zfs.l2arc_write_max=2500000000
 vfs.zfs.arc_meta_limit=30890250000
 vfs.zfs.arc_free_target=696043
 vfs.zfs.arc_kmem_cache_reap_retry_ms=1000
 vfs.zfs.compressed_arc_enabled=1
 vfs.zfs.arc_grow_retry=60
 vfs.zfs.arc_shrink_shift=7
 vfs.zfs.arc_average_blocksize=8192
 vfs.zfs.arc_no_grow_shift=5
 vfs.zfs.arc_min=16593888768
 vfs.zfs.arc_max=123561000000
 vfs.zfs.abd_chunk_size=4096
 vfs.zfs.abd_scatter_enabled=1
 vm.kmem_size=133824851968
 vm.kmem_size_scale=1
 vm.kmem_size_min=0
 vm.kmem_size_max=1319413950874
----------------------------------------------------------------------