On Sun, Aug 25, 2024 at 11:10:19AM +0200, Martin Pieuchot wrote:
> On 24/08/24(Sat) 13:14, Hugh Graham wrote:
> > On Sat, Aug 24, 2024 at 09:31:43PM +0200, Martin Pieuchot wrote:
> > > On 24/08/24(Sat) 12:09, Hugh Graham wrote:
> > > > The machine that slowly received the ports tree crashed upon reboot,
> > > > and I have included the traces. It was running 7.5-stable at the
> > > > time. I will wait an hour or so, and then restart and repeat
> > > > against current.
> > >
> > > Thanks, could you elaborate how you trigger the corruptions? I'd like
> > > to try to reproduce them locally.
> >
> > To summarise, I first encountered the crash while trying to move
> > a large filesystem archive from an old machine that could only
> > manage roughly 1MB/s to a relatively new machine over ethernet.
> > I then reproduced the crash by setting media 10BaseT on the
> > receiving machine, and sending the archive from another new
> > machine. I haven't been able to reproduce the crash with either
> > local or fast network transfers, but also haven't tested this
> > exhaustively.
> >
> > Subsequently, I have reproduced the crash by setting media 10BaseT
> > on my target machine, and sending 25GB of ports and packages via
> > pax over netcat. Possibly loops of CVSROOT would work better than
> > the large packages. There is a dmesg from the target machine
> > deeper in this email thread.
>
> Hugh, could you please send the exact commands that triggered the crash?
> All the details matter!
OK. Here is a log from today. There are two common themes in
these crashes. 1) This possibly cursed machine that should be
flung into hades. 2) A slow network and lots of file writes.
This time it took about 35GB.
The kernel was current as of yesterday, and I should note the
machine previously used sata ssd and also crashed in the same
circumstances.
/Hugh
>> OpenBSD/amd64 BOOTX64 3.65
boot> boot bsd.76 -s
booting hd0a:bsd.76: 20010965+4318216+417824+0+1241088
[1546704+128+1398696+1094397]=0x1ca58f8
entry point at 0x1001000
[ using 4040952 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
Copyright (c) 1995-2024 OpenBSD. All rights reserved. https://www.OpenBSD.org
OpenBSD 7.6-beta (GENERIC.MP) #3: Sat Aug 24 11:35:41 PDT 2024
h...@argus.oxide.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 33551818752 (31997MB)
avail mem = 32511336448 (31005MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.3 @ 0xc67ed000 (65 entries)
bios0: vendor American Megatrends Inc. version "3405" date 12/13/2023
bios0: ASUS PRIME B550M-A
efi0 at bios0: UEFI 2.7
efi0: American Megatrends rev 0x50011
acpi0 at bios0: ACPI 6.2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP IVRS SSDT SSDT SSDT FIDT FPDT MCFG HPET VFCT WPBT TPM2
SSDT CRAT CDIT SSDT SSDT SSDT WSMT APIC SSDT SSDT
acpi0: wakeup devices X162(S4) GP17(S4) XHC0(S4) XHC1(S4) PS2K(S3) X161(S4)
PTXH(S4) X1_1(S4) X1_2(S4) RLAN(S4) M2_2(S4)
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-127
acpihpet0 at acpi0: 14318180 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Ryzen 5 5600G with Radeon Graphics, 3900.01 MHz, 19-50-00, patch
0a50000f
cpu0: cpuid 1
edx=178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT>
ecx=76f8320b<SSE3,PCLMUL,MWAIT,SSSE3,FMA3,CX16,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND>
cpu0: cpuid 6 eax=4<ARAT> ecx=1<EFFFREQ>
cpu0: cpuid 7.0
ebx=219c97a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,PQM,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,SHA>
ecx=40068c<UMIP,PKU> edx=10
cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
cpu0: cpuid 80000001 edx=2fd3fbff<NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG>
ecx=75c237ff<LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TCE,TOPEXT,CPCTR,DBKP,PCTRL3,MWAITX>
cpu0: cpuid 80000007 edx=6799<HWPSTATE,ITSC>
cpu0: cpuid 80000008
ebx=191ef657<IBPB,IBRS,STIBP,STIBP_ALL,IBRS_PREF,IBRS_SM,SSBD>
cpu0: cpuid 8000001F
eax=1780f<SME,SEV,PFLUSH_MSR,SEVES,REQ64BITHOST,RESTINJ,ALTINJ,DBGSTSW,VTE>
edx=1
cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 512KB 64b/line
8-way L2 cache, 16MB 64b/line 16-way L3 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 100MHz
cpu0: mwait min=64, max=64, C-substates=1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu3: smt 0, core 3, package 0
cpu4 at mainbus0: apid 8 (application processor)
cpu4: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu4: smt 0, core 4, package 0
cpu5 at mainbus0: apid 10 (application processor)
cpu5: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu5: smt 0, core 5, package 0
cpu6 at mainbus0: apid 1 (application processor)
cpu6: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu6: smt 1, core 0, package 0
cpu7 at mainbus0: apid 3 (application processor)
cpu7: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu7: smt 1, core 1, package 0
cpu8 at mainbus0: apid 5 (application processor)
cpu8: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu8: smt 1, core 2, package 0
cpu9 at mainbus0: apid 7 (application processor)
cpu9: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu9: smt 1, core 3, package 0
cpu10 at mainbus0: apid 9 (application processor)
cpu10: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu10: smt 1, core 4, package 0
cpu11 at mainbus0: apid 11 (application processor)
cpu11: AMD Ryzen 5 5600G with Radeon Graphics, 3900.00 MHz, 19-50-00, patch
0a50000f
cpu11: smt 1, core 5, package 0
ioapic0 at mainbus0: apid 13 pa 0xfec00000, version 21, 24 pins
ioapic1 at mainbus0: apid 14 pa 0xfec01000, version 21, 32 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (GPP6)
acpiprt2 at acpi0: bus -1 (GPP7)
acpiprt3 at acpi0: bus -1 (GPP8)
acpiprt4 at acpi0: bus -1 (GPP9)
acpiprt5 at acpi0: bus 11 (GP17)
acpiprt6 at acpi0: bus -1 (GPP0)
acpiprt7 at acpi0: bus -1 (GP18)
acpiprt8 at acpi0: bus 10 (GPP4)
acpiprt9 at acpi0: bus -1 (GPP5)
acpiprt10 at acpi0: bus 1 (GPP3)
acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000
acpicmos0 at acpi0
com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
com0: console
acpibtn0 at acpi0: PWRB
amdgpio0 at acpi0 GPIO uid 0 addr 0xfed81500/0x400 irq 7, 184 pins
tpm0 at acpi0 TPM_: unsupported TPM2 start method 2
"ACPI0010" at acpi0 not configured
acpicpu0 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu1 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu2 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu3 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu4 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu5 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu6 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu7 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu8 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu9 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu10 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
acpicpu11 at acpi0: C3(0@350 io@0x415), C2(0@18 io@0x414), C1(0@1 mwait), PSS
"AMDIF030" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
cpu0: 3900 MHz: speeds: 3900 1700 1400 MHz
pci0 at mainbus0 bus 0
ksmn0 at pci0 dev 0 function 0 "AMD 17h/6xh Root Complex" rev 0x00
"AMD 17h/6xh IOMMU" rev 0x00 at pci0 dev 0 function 2 not configured
pchb0 at pci0 dev 1 function 0 "AMD 17h/6xh Host" rev 0x00
pchb1 at pci0 dev 2 function 0 "AMD 17h/6xh Host" rev 0x00
ppb0 at pci0 dev 2 function 1 "AMD 17h/6xh PCIE" rev 0x00: msi
pci1 at ppb0 bus 1
xhci0 at pci1 dev 0 function 0 "AMD 500 Series xHCI" rev 0x00: msix, xHCI 1.10
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00
addr 1
ahci0 at pci1 dev 0 function 1 "AMD 500 Series AHCI" rev 0x00: msi, AHCI 1.3.1
scsibus1 at ahci0: 32 targets
ppb1 at pci1 dev 0 function 2 "AMD 500 Series PCIE" rev 0x00
pci2 at ppb1 bus 2
ppb2 at pci2 dev 0 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci3 at ppb2 bus 3
ppb3 at pci2 dev 1 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci4 at ppb3 bus 4
ppb4 at pci2 dev 2 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci5 at ppb4 bus 5
em0 at pci5 dev 0 function 0 "Intel 82576" rev 0x01: msi, address
98:b7:85:1e:c7:44
em1 at pci5 dev 0 function 1 "Intel 82576" rev 0x01: msi, address
98:b7:85:1e:c7:45
ppb5 at pci2 dev 3 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci6 at ppb5 bus 6
ppb6 at pci2 dev 4 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci7 at ppb6 bus 7
ppb7 at pci2 dev 8 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci8 at ppb7 bus 8
ppb8 at pci2 dev 9 function 0 "AMD 500 Series PCIE" rev 0x00: msi
pci9 at ppb8 bus 9
re0 at pci9 dev 0 function 0 "Realtek 8168" rev 0x15: RTL8168H/8111H (0x5400),
msi, address 58:11:22:d4:9e:47
rgephy0 at re0 phy 7: RTL8251, rev. 0
ppb9 at pci0 dev 2 function 2 "AMD 17h/6xh PCIE" rev 0x00: msi
pci10 at ppb9 bus 10
nvme0 at pci10 dev 0 function 0 "Samsung PM9C1a NVMe" rev 0x00: msix, NVMe 2.0
nvme0: Samsung SSD 990 EVO 1TB, firmware 0B2QKXJ7, serial S7M3NS0X521107N
scsibus2 at nvme0: 2 targets, initiator 0
sd0 at scsibus2 targ 1 lun 0: <NVMe, Samsung SSD 990, 0B2Q>
sd0: 953869MB, 512 bytes/sector, 1953525168 sectors
pchb2 at pci0 dev 8 function 0 "AMD 17h/6xh Host" rev 0x00
ppb10 at pci0 dev 8 function 1 "AMD 17h/6xh PCIE" rev 0x00
pci11 at ppb10 bus 11
amdgpu0 at pci11 dev 0 function 0 "ATI Cezanne" rev 0xc9
drm0 at amdgpu0
amdgpu0: msi
azalia0 at pci11 dev 0 function 1 "ATI Renoir HD Audio" rev 0x00: msi
azalia0: no supported codecs
ccp0 at pci11 dev 0 function 2 "AMD 17h/1xh Crypto" rev 0x00: msix: RNG
xhci1 at pci11 dev 0 function 3 "AMD 17h/6xh xHCI" rev 0x00: msix, xHCI 1.10
usb1 at xhci1: USB revision 3.0
uhub1 at usb1 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00
addr 1
xhci2 at pci11 dev 0 function 4 "AMD 17h/6xh xHCI" rev 0x00: msix, xHCI 1.10
usb2 at xhci2: USB revision 3.0
uhub2 at usb2 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00
addr 1
azalia1 at pci11 dev 0 function 6 "AMD 17h/1xh HD Audio" rev 0x00: msi
azalia1: codecs: Realtek ALC897
audio0 at azalia1
piixpm0 at pci0 dev 20 function 0 "AMD FCH SMBus" rev 0x51: polling
iic0 at piixpm0
iic1 at piixpm0
pcib0 at pci0 dev 20 function 3 "AMD FCH LPC" rev 0x51
pchb3 at pci0 dev 24 function 0 "AMD 19h/5xh Data Fabric" rev 0x00
pchb4 at pci0 dev 24 function 1 "AMD 19h/5xh Data Fabric" rev 0x00
pchb5 at pci0 dev 24 function 2 "AMD 19h/5xh Data Fabric" rev 0x00
pchb6 at pci0 dev 24 function 3 "AMD 19h/5xh Data Fabric" rev 0x00
pchb7 at pci0 dev 24 function 4 "AMD 19h/5xh Data Fabric" rev 0x00
pchb8 at pci0 dev 24 function 5 "AMD 19h/5xh Data Fabric" rev 0x00
pchb9 at pci0 dev 24 function 6 "AMD 19h/5xh Data Fabric" rev 0x00
pchb10 at pci0 dev 24 function 7 "AMD 19h/5xh Data Fabric" rev 0x00
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0 mux 1
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lm0 at isa0 port 0x290/8: W83627DHG
efifb at mainbus0 not configured
uhidev0 at uhub0 port 10 configuration 1 interface 2 "AsusTek Computer Inc.
AURA LED Controller" rev 2.00/1.00 addr 2
uhidev0: iclass 3/0, 236 report ids
uhid0 at uhidev0 reportid 236: input=64, output=64, feature=0
ugen0 at uhub0 port 10 configuration 1 "AsusTek Computer Inc. AURA LED
Controller" rev 2.00/1.00 addr 2
uhidev1 at uhub1 port 2 configuration 1 interface 0 "CPS CP1500PFCLCDa" rev
2.00/2.00 addr 2
uhidev1: iclass 3/0, 45 report ids
upd0 at uhidev1
uhid1 at uhidev1 reportid 1: input=0, output=0, feature=1
uhid2 at uhidev1 reportid 2: input=0, output=0, feature=1
uhid3 at uhidev1 reportid 3: input=0, output=0, feature=1
uhid4 at uhidev1 reportid 4: input=0, output=0, feature=1
uhid5 at uhidev1 reportid 5: input=0, output=0, feature=1
uhid6 at uhidev1 reportid 6: input=0, output=0, feature=1
uhid7 at uhidev1 reportid 7: input=0, output=0, feature=6
uhid8 at uhidev1 reportid 8: input=5, output=0, feature=5
uhid9 at uhidev1 reportid 9: input=0, output=0, feature=2
uhid10 at uhidev1 reportid 10: input=0, output=0, feature=2
uhid11 at uhidev1 reportid 12: input=1, output=0, feature=1
uhid12 at uhidev1 reportid 13: input=0, output=0, feature=1
uhid13 at uhidev1 reportid 14: input=0, output=0, feature=1
uhid14 at uhidev1 reportid 15: input=0, output=0, feature=2
uhid15 at uhidev1 reportid 16: input=4, output=0, feature=4
uhid16 at uhidev1 reportid 18: input=0, output=0, feature=2
uhid17 at uhidev1 reportid 19: input=0, output=0, feature=1
uhid18 at uhidev1 reportid 20: input=1, output=0, feature=1
uhid19 at uhidev1 reportid 21: input=0, output=0, feature=2
uhid20 at uhidev1 reportid 22: input=0, output=0, feature=2
uhid21 at uhidev1 reportid 24: input=0, output=0, feature=4
uhid22 at uhidev1 reportid 25: input=2, output=0, feature=2
uhid23 at uhidev1 reportid 26: input=1, output=0, feature=1
uhid24 at uhidev1 reportid 27: input=0, output=0, feature=1
uhid25 at uhidev1 reportid 28: input=0, output=0, feature=5
uhid26 at uhidev1 reportid 29: input=2, output=0, feature=2
uhid27 at uhidev1 reportid 37: input=0, output=0, feature=1
uhid28 at uhidev1 reportid 38: input=0, output=0, feature=1
uhid29 at uhidev1 reportid 39: input=0, output=0, feature=1
uhid30 at uhidev1 reportid 40: input=63, output=0, feature=63
uhid31 at uhidev1 reportid 41: input=0, output=63, feature=63
uhid32 at uhidev1 reportid 42: input=0, output=0, feature=1
uhid33 at uhidev1 reportid 43: input=0, output=0, feature=1
uhid34 at uhidev1 reportid 44: input=1, output=0, feature=1
uhid35 at uhidev1 reportid 45: input=1, output=0, feature=1
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (8e0e562e38eefe35.a) swap on sd0b dump on sd0b
amdgpu0: GREEN_SARDINE GC 9.3.0 7 CU rev 0x00
amdgpu0: 1024x768, 32bpp
wsdisplay0 at amdgpu0 mux 1
pckbd_enable: command error
wsdisplay0: screen 0-5 added (std, vt100 emulation)
Enter pathname of shell or RETURN for sh:
# ifconfig em0 10.0.0.X media 10BaseT
# mount_mfs -s 7500000 swap /usr
# tar xpf /base76.tar ./usr
# mount /scratch
# cd /scratch
# df -h .
Filesystem Size Used Avail Capacity Mounted on
/dev/sd0p 52.0G 3.4G 46.0G 7% /scratch
# nc 10.0.0.X 12345 |pax -r
uvm_fault(0xffffffff82828fa0, 0xfffffd073e3be050, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at bufcache_release+0x1b0: movq %rdi,0x8(%r8)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
bufcache_release(fffffd873d45d8f8) at bufcache_release+0x1b0
brelse(fffffd873d45d8f8) at brelse+0x89
sd_buf_done(fffffd80793092c8) at sd_buf_done+0x121
scsi_done(fffffd80793092c8) at scsi_done+0x31
nvme_q_complete(ffff8000000cb000,ffff8000003fa180) at nvme_q_complete+0x134
nvme_intr(ffff8000000cb000) at nvme_intr+0x2b
intr_handler(ffff800048e05170,ffff8000003f3b80) at intr_handler+0x91
Xintr_ioapic_edge32_untramp() at Xintr_ioapic_edge32_untramp+0x18f
acpicpu_idle() at acpicpu_idle+0x131
sched_idle(ffffffff82782ff0) at sched_idle+0x298
end trace frame: 0x0, count: 5
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}> show uvm
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
7939566 VM pages: 213480 active, 140 inactive, 1 wired, 454198 free (78912 ze
ro)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=264652, free-target=352869, inactive-target=0, wired-max=2646522
faults=215137, traps=215454, intrs=49325992, ctxswitch=156007057 fpuswitch=0
softint=4343899, syscalls=164514156, kmapent=10
fault counts:
noram=0, noanon=0, noamap=0, pgwait=0, pgrele=0
ok relocks(total)=718(718), anget(retries)=1153(0), amapcopy=13525
neighbor anon/obj pg=671/655, gets(lock/unlock)=960/718
cases: anon=940, anoncow=213, obj=834, prcopy=126, przero=213023
daemon and swap counts:
woke=0, revs=0, scans=0, obscans=0, anscans=0
busy=0, freed=0, reactivate=0, deactivate=0
pageouts=0, pending=0, nswget=0
nswapdev=1
swpages=18089189, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffffff828a4dc8
ddb{0}> show bcstats
Current Buffer Cache status:
numbufs 1710821 busymapped 1, delwri 67
kvaslots 6553 avail kva slots 6552
bufpages 6842891, dmapages 157839, dirtypages 268
pendingreads 0, pendingwrites 0
highflips 3390819, highflops 0, dmaflips 970
ddb{0}>
