Claudio Jeker <cje...@diehard.n-r-g.com> wrote:
...
> You are probably haunted by a bad issue with DMA memory and running out of
> it. Your top is missing -SH since then you would probably see the
> pagedameon go bananas. The problem is you have not enough memory below 4G
> but the pagedaemon is not able to properly free memory there since it has
> no proper tracking for that condition. It only knows memory is short and
> tries to drop as much as possible over and over again. As a result your
> system becomes unresponsive.
> 
> The boot loader can print the memory map. Which should show you
> how much memory is below 4G (I think the command is machine mem).
> 
> This is a known issue and there is some work going on to fix the problem.

It's been a few months but I wanted to double-check that my memory
map is consistent with this explanation. Here's the one I sent to
the list in May (I didn't CC anyone that time):

        boot> machine memory
        Region 0: type 1 at 0x0 for 609KB
        Region 1: type 2 at 0xf0000 for 64KB
        Region 2: type 2 at 0xfec00000 for 20480KB
        Region 3: type 2 at 0xe0000000 for 262144KB
        Region 4: type 2 at 0x98400 for 31KB
        Region 5: type 2 at 0xcfdf0000 for 64KB
        Region 6: type 1 at 0x100000 for 3404292KB
        Region 7: type 3 at 0xcfde3000 for 52KB
        Region 8: type 4 at 0xcfde0000 for 12KB
        Region 9: type 1 at 0x100000000 for 13369344KB
        Low ram: 609KB  High ram: 3404292KB
        Total free memory: 16774245KB

and after transferring the SSD (and video card) to a different machine,
I still experience the same problem. That machine's "machine memory"
output contains

        Region 3: type 1 at 0x100000 for 3136000KB

(both manually transcribed; photo for second at [0]; "new" machine's
dmesg below signature, in case it helps). If I'm correctly guessing
the meaning of that output, each machine has a region with nearly
3GB of memory before 4GB / 0x100000000.

I don't know my way around the kernel but let me know if there's
anything I can do to help.

Also, I took a video of top updating itself comically slowly, one
little chunk of text at a time: [1]. This time I passed -1SH so you
can see pagedaemon at the top as expected.

A quick description of the symptoms, since it's been a while:

- Machine becomes almost completely unresponsive, then completely
  unresponsive. Even the mouse cursor gets sluggish then stops.

- Hard disk light is on.

- Example line from top (manually transcribed); note the tiny active
  amount and large free amount:
        Memory: Real: 36K/2132M act/tot free: 9746M Cache: 151M Swap: 877M/32G



[0] https://photos.falsifian.org/photo/IJ1gRH7ERkW5/IMG_20241111_171352_436.jpg
[1] https://photos.falsifian.org/video/PjdfzVzv3LAm/VID_20241111_165503.mp4

-- 
James


OpenBSD 7.6-current (GENERIC.MP) #407: Fri Nov  1 20:31:42 MDT 2024
    dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 12859211776 (12263MB)
avail mem = 12446150656 (11869MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.5 @ 0xf0700 (81 entries)
bios0: vendor American Megatrends Inc. version "0704" date 11/12/2009
bios0: ASUSTeK Computer INC. P6T DELUXE V2
acpi0 at bios0: ACPI 3.0
acpi0: sleep states S0 S1 S3 S4 S5
acpi0: tables DSDT FACP APIC MCFG OEMB HPET OSFR SSDT
acpi0: wakeup devices NPE2(S4) NPE4(S4) NPE5(S4) NPE6(S4) NPE8(S4) NPE9(S4) 
NPEA(S4) P0P1(S4) USB0(S4) USB1(S4) USB2(S4) USB5(S4) EUSB(S4) USB3(S4) 
USB4(S4) USB6(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2672.88 MHz, 06-1a-04, patch 
00000012
cpu0: cpuid 1 
edx=bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
 
ecx=98e3bd<SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT>
cpu0: cpuid 6 eax=3<SENSOR> ecx=1<EFFFREQ>
cpu0: cpuid a vers=3, gp=4, gpwidth=48, ff=3, ffwidth=48
cpu0: cpuid 80000001 edx=28100800<NXE,RDTSCP,LONG> ecx=1<LAHF>
cpu0: cpuid 80000007 edx=100<ITSC>
cpu0: MELTDOWN
cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 4-way I-cache, 256KB 64b/line 
8-way L2 cache, 8MB 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 133MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2672.98 MHz, 06-1a-04, patch 
00000012
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.02 MHz, 06-1a-04, patch 
00000012
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.26 MHz, 06-1a-04, patch 
00000012
cpu3: smt 0, core 3, package 0
cpu4 at mainbus0: apid 1 (application processor)
cpu4: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.46 MHz, 06-1a-04, patch 
00000012
cpu4: smt 1, core 0, package 0
cpu5 at mainbus0: apid 3 (application processor)
cpu5: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.57 MHz, 06-1a-04, patch 
00000012
cpu5: smt 1, core 1, package 0
cpu6 at mainbus0: apid 5 (application processor)
cpu6: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.45 MHz, 06-1a-04, patch 
00000012
cpu6: smt 1, core 2, package 0
cpu7 at mainbus0: apid 7 (application processor)
cpu7: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2673.25 MHz, 06-1a-04, patch 
00000012
cpu7: smt 1, core 3, package 0
ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins
ioapic1 at mainbus0: apid 9 pa 0xfec8a000, version 20, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xe0000000, bus 0-255
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (NPE2)
acpiprt2 at acpi0: bus -1 (NPE4)
acpiprt3 at acpi0: bus -1 (NPE5)
acpiprt4 at acpi0: bus -1 (NPE6)
acpiprt5 at acpi0: bus -1 (NPE8)
acpiprt6 at acpi0: bus -1 (NPE9)
acpiprt7 at acpi0: bus -1 (NPEA)
acpiprt8 at acpi0: bus 8 (P0P1)
acpiprt9 at acpi0: bus 7 (P0P4)
acpiprt10 at acpi0: bus -1 (P0P5)
acpiprt11 at acpi0: bus 6 (P0P6)
acpiprt12 at acpi0: bus -1 (P0P7)
acpiprt13 at acpi0: bus 5 (P0P8)
acpiprt14 at acpi0: bus 4 (P0P9)
acpiprt15 at acpi0: bus 1 (NPE1)
acpiprt16 at acpi0: bus 2 (NPE3)
acpiprt17 at acpi0: bus 3 (NPE7)
acpipci0 at acpi0 PCI0
acpicmos0 at acpi0
aibs0 at acpi0 RTMP RVLT RFAN GGRP GITM SITM
aibs0: TSIF: 0: not a nameref: 257 type
aibs0: TSIF: 1: not a nameref: 257 type
aibs0: FSIF: 0: not a nameref: 257 type
aibs0: FSIF: 1: not a nameref: 257 type
aibs0: FSIF: 2: not a nameref: 257 type
aibs0: FSIF: 3: not a nameref: 257 type
aibs0: FSIF: 4: not a nameref: 257 type
aibs0: VSIF: 0: not a nameref: 257 type
aibs0: VSIF: 1: not a nameref: 257 type
aibs0: VSIF: 2: not a nameref: 257 type
aibs0: VSIF: 3: not a nameref: 257 type
aibs0: no sensors found
"pnp0c14" at acpi0 not configured
acpibtn0 at acpi0: PWRB
acpicpu0 at acpi0: C1(@1 halt!), PSS
acpicpu1 at acpi0: C1(@1 halt!), PSS
acpicpu2 at acpi0: C1(@1 halt!), PSS
acpicpu3 at acpi0: C1(@1 halt!), PSS
acpicpu4 at acpi0: C1(@1 halt!), PSS
acpicpu5 at acpi0: C1(@1 halt!), PSS
acpicpu6 at acpi0: C1(@1 halt!), PSS
acpicpu7 at acpi0: C1(@1 halt!), PSS
cpu0: using IvyBridge MDS workaround
cpu0: Enhanced SpeedStep 2672 MHz: speeds: 2668, 2667, 2533, 2400, 2267, 2133, 
2000, 1867, 1733, 1600 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel X58 Host" rev 0x12
ppb0 at pci0 dev 1 function 0 "Intel X58 PCIE" rev 0x12: msi
pci1 at ppb0 bus 1
ppb1 at pci0 dev 3 function 0 "Intel X58 PCIE" rev 0x12: msi
pci2 at ppb1 bus 2
radeondrm0 at pci2 dev 0 function 0 "ATI Radeon HD 5450" rev 0x00
drm0 at radeondrm0
radeondrm0: msi
azalia0 at pci2 dev 0 function 1 "ATI Radeon HD 5470 Audio" rev 0x00: msi
azalia0: no supported codecs
ppb2 at pci0 dev 7 function 0 "Intel X58 PCIE" rev 0x12: msi
pci3 at ppb2 bus 3
nvme0 at pci3 dev 0 function 0 "SanDisk PC SN520" rev 0x01: msix, NVMe 1.3
nvme0: PC SN520 NVMe WDC 256GB, firmware 20220012, serial 1937B4803998
scsibus1 at nvme0: 2 targets, initiator 0
sd0 at scsibus1 targ 1 lun 0: <NVMe, PC SN520 NVMe WD, 2022>
sd0: 244198MB, 512 bytes/sector, 500118192 sectors
"Intel X58 Misc" rev 0x12 at pci0 dev 20 function 0 not configured
"Intel X58 GPIO" rev 0x12 at pci0 dev 20 function 1 not configured
"Intel X58 RAS" rev 0x12 at pci0 dev 20 function 2 not configured
"Intel X58 Throttle" rev 0x12 at pci0 dev 20 function 3 not configured
uhci0 at pci0 dev 26 function 0 "Intel 82801JI USB" rev 0x00: apic 8 int 16
uhci1 at pci0 dev 26 function 1 "Intel 82801JI USB" rev 0x00: apic 8 int 21
uhci2 at pci0 dev 26 function 2 "Intel 82801JI USB" rev 0x00: apic 8 int 19
ehci0 at pci0 dev 26 function 7 "Intel 82801JI USB" rev 0x00: apic 8 int 18
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 
addr 1
azalia1 at pci0 dev 27 function 0 "Intel 82801JI HD Audio" rev 0x00: msi
azalia1: codecs: Analog Devices AD1989B
audio0 at azalia1
ppb3 at pci0 dev 28 function 0 "Intel 82801JI PCIE" rev 0x00: msi
pci4 at ppb3 bus 7
ppb4 at pci0 dev 28 function 2 "Intel 82801JI PCIE" rev 0x00: msi
pci5 at ppb4 bus 6
mskc0 at pci5 dev 0 function 0 "Marvell Yukon 88E8056" rev 0x12, Yukon-2 EC 
Ultra rev. B0 (0x3): msi
msk0 at mskc0 port A: address 00:24:8c:52:e5:48
eephy0 at msk0 phy 0: 88E1149, rev. 1
ppb5 at pci0 dev 28 function 4 "Intel 82801JI PCIE" rev 0x00: msi
pci6 at ppb5 bus 5
pciide0 at pci6 dev 0 function 0 "Marvell 88SE6121 SATA" rev 0xb2: DMA 
(unsupported), channel 0 configured to native-PCI, channel 1 configured to 
native-PCI
pciide0: using apic 8 int 16 for native-PCI interrupt
pciide0: channel 0 ignored (not responding; disabled or no drives?)
pciide0: channel 1 ignored (not responding; disabled or no drives?)
ppb6 at pci0 dev 28 function 5 "Intel 82801JI PCIE" rev 0x00: msi
pci7 at ppb6 bus 4
mskc1 at pci7 dev 0 function 0 "Marvell Yukon 88E8056" rev 0x12, Yukon-2 EC 
Ultra rev. B0 (0x3): msi
msk1 at mskc1 port A: address 00:24:8c:52:e5:47
eephy1 at msk1 phy 0: 88E1149, rev. 1
uhci3 at pci0 dev 29 function 0 "Intel 82801JI USB" rev 0x00: apic 8 int 23
uhci4 at pci0 dev 29 function 1 "Intel 82801JI USB" rev 0x00: apic 8 int 19
uhci5 at pci0 dev 29 function 2 "Intel 82801JI USB" rev 0x00: apic 8 int 18
ehci1 at pci0 dev 29 function 7 "Intel 82801JI USB" rev 0x00: apic 8 int 23
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 
addr 1
ppb7 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0x90
pci8 at ppb7 bus 8
"VIA VT6306 FireWire" rev 0xc0 at pci8 dev 2 function 0 not configured
pcib0 at pci0 dev 31 function 0 "Intel 82801JIR LPC" rev 0x00
ahci0 at pci0 dev 31 function 2 "Intel 82801JI AHCI" rev 0x00: msi, AHCI 1.2
ahci0: port 3: 3.0Gb/s
scsibus2 at ahci0: 32 targets
sd1 at scsibus2 targ 3 lun 0: <ATA, WDC WDS100T2B0A, 4150> naa.5001b448b53807dd
sd1: 953869MB, 512 bytes/sector, 1953525168 sectors, thin
ichiic0 at pci0 dev 31 function 3 "Intel 82801JI SMBus" rev 0x00: apic 8 int 18
iic0 at ichiic0
iic0: addr 0x1e 01=01 02=01 11=01 12=01 21=01 22=01 31=01 32=01 words 00=0001 
01=0101 02=0100 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x20 01=80 02=17 03=7f 10=00 19=b0 20=20 21=00 25=20 26=b2 38=74 
39=03 4a=99 6a=2c 78=02 79=08 7a=00 7b=00 7e=82 80=20 8b=37 8c=13 96=9f 99=41 
9a=98 9b=01 d0=00 d1=03 d2=72 d3=72 d4=03 d5=02 d6=01 d7=87 d8=27 d9=00 da=00 
db=00 dc=00 dd=00 de=00 df=10 e0=00 e1=00 e2=10 e3=0c e4=10 e5=10 e6=17 e7=10 
e8=10 e9=10 ea=10 ec=07 ee=00 ef=00 f1=0f f5=01 f6=02 f9=cd fa=c0 fb=50 words 
00=ffff 01=8037 02=1766 03=7fff 04=ffff 05=ffff 06=ffff 07=ffff
spdmem0 at iic0 addr 0x50: 2GB DDR3 SDRAM PC3-10600
spdmem1 at iic0 addr 0x51: 2GB DDR3 SDRAM PC3-10600
spdmem2 at iic0 addr 0x52: 2GB DDR3 SDRAM PC3-10600
spdmem3 at iic0 addr 0x53: 2GB DDR3 SDRAM PC3-10600
spdmem4 at iic0 addr 0x54: 2GB DDR3 SDRAM PC3-10600
spdmem5 at iic0 addr 0x55: 2GB DDR3 SDRAM PC3-10600
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
usb4 at uhci2: USB revision 1.0
uhub4 at usb4 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
usb5 at uhci3: USB revision 1.0
uhub5 at usb5 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
usb6 at uhci4: USB revision 1.0
uhub6 at usb6 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
usb7 at uhci5: USB revision 1.0
uhub7 at usb7 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 
addr 1
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lm0 at isa0 port 0x290/8: W83627DHG
vmm0 at mainbus0: VMX/EPT (using slow L1TF mitigation)
uhub8 at uhub0 port 5 configuration 1 interface 0 "NEC hub" rev 2.00/1.00 addr 2
umass0 at uhub1 port 3 configuration 1 interface 0 " Patriot Memory" rev 
2.00/1.10 addr 2
umass0: using SCSI over Bulk-Only
scsibus3 at umass0: 2 targets, initiator 0
sd2 at scsibus3 targ 1 lun 0: <, Patriot Memory, PMAP> removable 
serial.13fe1e0007781FA7021F
sd2: 1968MB, 512 bytes/sector, 4030464 sectors
uhub9 at uhub1 port 6 configuration 1 interface 0 "Genesys Logic USB2.0 Hub" 
rev 2.00/77.63 addr 3
uhidev0 at uhub9 port 3 configuration 1 interface 0 "ZSA Ergodox EZ" rev 
1.10/0.01 addr 4
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
uhidev1 at uhub9 port 3 configuration 1 interface 1 "ZSA Ergodox EZ" rev 
1.10/0.01 addr 4
uhidev1: iclass 3/0, 5 report ids
uhid0 at uhidev1 reportid 3: input=2, output=0, feature=0
ucc0 at uhidev1 reportid 4: 668 usages, 20 keys, array
wskbd2 at ucc0 mux 1
ukbd1 at uhidev1 reportid 5: 128 variable keys, 0 key codes
wskbd3 at ukbd1 mux 1
uhidev2 at uhub9 port 4 configuration 1 interface 0 "Kensington Kensington 
Expert Mouse" rev 1.10/2.01 addr 5
uhidev2: iclass 3/1
ums0 at uhidev2: 4 buttons, Z dir
wsmouse0 at ums0 mux 0
vscsi0 at root
scsibus4 at vscsi0: 256 targets
softraid0 at root
scsibus5 at softraid0: 256 targets
sd3 at scsibus5 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006>
sd3: 391167MB, 512 bytes/sector, 801111803 sectors
softraid0: volume sd3 is roaming, it used to be sd2, updating metadata
root on sd3a (676fc55ae679a444.a) swap on sd3b dump on sd3b
WARNING: / was not properly unmounted
radeondrm0: CEDAR
radeon_audio_component_init: stub
radeondrm0: 1920x1080, 32bpp
wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0
wskbd1: connecting to wsdisplay0
wskbd2: connecting to wsdisplay0
wskbd3: connecting to wsdisplay0
wsdisplay0: screen 1-5 added (std, vt100 emulation)

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