On Sun, 2 Mar 2025 18:06:17 +0100 Martin Pieuchot <[email protected]> wrote:
> Hello Julian, > > Thanks for the report. > > On 01/03/25(Sat) 17:57, Julian Smith wrote: > > >Synopsis: High CPU load for pagedaemon and mouse freezing > > >Category: kernel > > >Environment: > > System : OpenBSD 7.6 > > Details : OpenBSD 7.6-current (GENERIC.MP) #477: Thu Dec 12 > > 21:42:00 MST 2024 > > > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > > > Architecture: OpenBSD.amd64 > > Machine : amd64 > > >Description: > > Over the last year or two my OpenBSD system has often frozen > > (including the mouse pointer) for varying amounts of time, > > usually for a second or so when opening a new browser windows, > > but sometimes for a few 10s of seconds or even minutes. > > > > When it freezes, top shows high CPU usage for pagedaemon, > > sometimes 150%. And systat shows a number of `@` characters in > > the Proc display (which i think means something is spinning?), > > i've seen this extending halfway across the available bar space. > > > > I upgraded from 7.6 to current a few weeks ago; this does not > > seem to have changed the behaviour. > > > > I have 16G of ram, and probably 50 Firefox and tor-browser tabs > > open; there doesn't seem to be particularly high CPU load from > > these, perhaps because i use uBlock origin and NoScript. `top` > > is currently reporting this memory usage: > > > > Memory: Real: 8593M/15G act/tot Free: 769M Cache: 498M > > Swap: 7889M/16G > > I've tried disabling swap and setting hw.smt=1; neither of these > > changed the behviour. > > Have you tried a -current snapshot? I made a lot of improvements to the > pagedaemon post 7.6. Ah, interesting. I was already using a current snapshot (GENERIC.MP#477 amd64); i've now upgraded with `sysupgrade -s` to `GENERIC.MP#577 amd64`. Unfortunately this doesn't seem to have changed the behaviour. For the first few hours `top` reported zero swap usage and there were no hangs or freezes, then swap started to increase. Then it started freezing in the same way as i've seen before. Here is the output of top and systat just after one of the early freezes: top: load averages: 24.99, 13.53, 6.79 jules-obsd 13:11:10 1641 threads: 1637 idle, 4 on processor up 1 days 22:49:52 CPU0 states: 11.3% user, 0.0% nice, 5.8% sys, 1.0% spin, 0.8% intr, 81.2% idle CPU1 states: 15.5% user, 0.0% nice, 4.6% sys, 0.2% spin, 0.2% intr, 79.5% idle CPU2 states: 16.6% user, 0.0% nice, 5.6% sys, 1.0% spin, 0.2% intr, 76.6% idle CPU3 states: 17.4% user, 0.0% nice, 6.2% sys, 1.8% spin, 0.0% intr, 74.7% idle Memory: Real: 8763M/15G act/tot Free: 728M Cache: 193M Swap: 2059M/16G PID TID PRI NICE SIZE RES STATE WAIT TIME CPU COMMAND 75945 418992 -18 0 0K 3092K idle pgdaemo 5:39 38.67% pagedaemon 12415 593381 2 -20 3324K 1700K sleep/1 kqread 112:39 13.23% sndiod 27573 515608 2 0 1093M 1903M sleep/1 kqread 153:02 12.74% tor-browser/MainThread 46805 584507 2 0 174M 221M sleep/1 kqread 80:04 11.33% Xorg 80581 553944 10 0 65M 30M sleep/1 fsleep 0:16 10.84% firefox/MediaPDecoder #742 46918 231013 2 0 311M 324M sleep/3 kqread 92:09 10.74% tor-browser/Isolated Web Content 60728 154325 2 0 551M 422M sleep/2 kqread 40:39 10.64% tor-browser/WebExtensions 80581 383514 10 0 65M 30M sleep/3 fsleep 1:20 7.57% firefox/MediaPDecoder #738 52639 182877 -18 0 0K 3092K idle aiodone 0:53 5.91% aiodoned 93946 549531 2 0 628M 488M sleep/0 kqread 110:49 4.05% firefox/Isolated Web Content 80581 547213 10 0 65M 30M sleep/1 fsleep 1:39 3.96% firefox/MediaSupervisor #100 66841 578839 2 0 3268K 2744K sleep/2 kqread 0:51 3.81% systat systat: 29 users Load 1.44 4.91 4.89 jules-obsd 13:17:28 memory totals (in KB) PAGING SWAPPING Interrupts real virtual free in out in out 3032 total Active 9414072 11537480 685896 ops 210804 acpi0 All 15369260 17492668 15399400 pages ***** 34 inteldrm 8 xhci0 Proc:r d s w Csw Trp Sys Int Sof Flt 3 forks ehci0 19 *** 7622 8663101946 368 3378 6123 fkppw 200 azalia0 2 fksvm sdhc0 0.1%Int 36.2%Spn 21.8%Sys 18.6%Usr 23.3%Idle pwait 36 iwn0 | | | | | | | | | | | 158 relck 1 ehci1 @@@@@@@@@@@@@@@@@@===========>>>>>>>>> norlk 82 ahci0 noram pckbc0 Namei Sys-cache Proc-cache No-cache 483 ndcpy pckbc0 Calls hits % hits % miss % 35 fltcp 529 clock 179632 154963 86 3179 2 21487 12 4756 zfod 2142 ipi 52 cow Disks sd0 sd1 sd2 133792 fmin seeks 178389 ftarg xfers 97 1187376 itarg speed 3449K 32273 wired sec 0.5 1214 pdfre 174075 pdscn > > What you're experiencing is the degenerative behavior of the current > pdaemon due to the choice made years ago to partition the memory into > "low" and "high" pages. While this change might have been a good idea > at the time it is clearly not with the amount of RAM present in "modern" > machines. There's nowadays too much pressure on "low" pages. > > Please let me know if -current improves your usage. I have had many > positive reports in the past months. Thanks for your help here. Please let me know if there's any more information that i can gather. - Jules > > > My hardware is a Lenovo x230 laptop. > > >How-To-Repeat: > > On my system the problem can be reproduced by running firefox > > and tor-browser opening multiple tabs in each, and using the > > system for a few hours, opening and closing browser tabs, > > compiling/linking etc etc. > > >Fix: > > Unknown > > > > dmesg: > > OpenBSD 7.6-current (GENERIC.MP) #477: Thu Dec 12 21:42:00 MST 2024 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > real mem = 16972566528 (16186MB) > > avail mem = 16434470912 (15673MB) > > random: good seed from bootblocks > > mpath0 at root > > scsibus0 at mpath0: 256 targets > > mainbus0 at root > > bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xdae9c000 (68 entries) > > bios0: vendor LENOVO version "G2ETB1WW (2.71 )" date 03/09/2018 > > bios0: LENOVO 2324FV6 > > efi0 at bios0: UEFI 2.3.1 > > efi0: Lenovo rev 0x2710 > > acpi0 at bios0: ACPI 5.0 > > acpi0: sleep states S0 S3 S4 S5 > > acpi0: tables DSDT FACP SLIC TCPA SSDT SSDT SSDT HPET APIC MCFG ECDT FPDT > > ASF! UEFI UEFI POAT SSDT SSDT DMAR UEFI DBG2 > > acpi0: wakeup devices LID_(S4) SLPB(S3) IGBE(S4) EXP3(S4) XHCI(S3) EHC1(S3) > > EHC2(S3) HDEF(S4) > > acpitimer0 at acpi0: 3579545 Hz, 24 bits > > acpihpet0 at acpi0: 14318179 Hz > > acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat > > cpu0 at mainbus0: apid 0 (boot processor) > > cpu0: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2594.23 MHz, 06-3a-09, > > patch 00000021 > > 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=77bae3ff<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND> > > cpu0: cpuid 6 eax=77<SENSOR,ARAT> ecx=9<EFFFREQ> > > cpu0: cpuid 7.0 ebx=281<FSGSBASE,SMEP,ERMS> > > edx=9c000400<MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD> > > cpu0: cpuid a vers=3, gp=4, gpwidth=48, ff=3, ffwidth=48 > > cpu0: cpuid d.1 eax=1<XSAVEOPT> > > cpu0: cpuid 80000001 edx=28000800<RDTSCP,LONG> ecx=1<LAHF> > > cpu0: cpuid 80000007 edx=100<ITSC> > > cpu0: MELTDOWN > > cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB > > 64b/line 8-way L2 cache, 3MB 64b/line 12-way L3 cache > > cpu0: smt 0, core 0, package 0 > > mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges > > cpu0: apic clock running at 99MHz > > cpu0: mwait min=64, max=64, C-substates=0.2.1.1.2, IBE > > cpu1 at mainbus0: apid 1 (application processor) > > cpu1: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2594.14 MHz, 06-3a-09, > > patch 00000021 > > cpu1: smt 1, core 0, package 0 > > cpu2 at mainbus0: apid 2 (application processor) > > cpu2: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2594.16 MHz, 06-3a-09, > > patch 00000021 > > cpu2: smt 0, core 1, package 0 > > cpu3 at mainbus0: apid 3 (application processor) > > cpu3: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz, 2594.14 MHz, 06-3a-09, > > patch 00000021 > > cpu3: smt 1, core 1, package 0 > > ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins > > acpimcfg0 at acpi0 > > acpimcfg0: addr 0xf8000000, bus 0-63 > > acpiec0 at acpi0 > > acpiprt0 at acpi0: bus 0 (PCI0) > > acpiprt1 at acpi0: bus -1 (PEG_) > > acpiprt2 at acpi0: bus 2 (EXP1) > > acpiprt3 at acpi0: bus 3 (EXP2) > > acpiprt4 at acpi0: bus 4 (EXP3) > > acpibtn0 at acpi0: LID_(wakeup) > > acpibtn1 at acpi0: SLPB(wakeup) > > acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001 > > acpicmos0 at acpi0 > > tpm0 at acpi0 TPM_ 1.2 (TIS) addr 0xfed40000/0x5000, device 0x0000104a rev > > 0x4e > > acpibat0 at acpi0: BAT0 model "45N1710" serial 316 type LION oem > > "Panasonic" > > acpiac0 at acpi0: AC unit online > > "LEN0078" at acpi0 not configured > > acpithinkpad0 at acpi0: version 1.0 > > "PNP0C14" at acpi0 not configured > > "PNP0C14" at acpi0 not configured > > "PNP0C14" at acpi0 not configured > > acpicpu0 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS > > acpicpu1 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS > > acpicpu2 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS > > acpicpu3 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS > > acpipwrres0 at acpi0: PUBS, resource for XHCI, EHC1, EHC2 > > acpitz0 at acpi0: critical temperature is 103 degC > > acpidock0 at acpi0: GDCK not docked (0) > > acpivideo0 at acpi0: VID_ > > acpivout0 at acpivideo0: LCD0 > > acpivideo1 at acpi0: VID_ > > cpu0: using VERW MDS workaround (except on vmm entry) > > cpu0: Enhanced SpeedStep 2594 MHz: speeds: 2601, 2600, 2500, 2400, 2300, > > 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz > > pci0 at mainbus0 bus 0 > > pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09 > > inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 > > drm0 at inteldrm0 > > inteldrm0: msi, IVYBRIDGE, gen 7 > > xhci0 at pci0 dev 20 function 0 "Intel 7 Series xHCI" rev 0x04: msi, xHCI > > 1.0 > > usb0 at xhci0: USB revision 3.0 > > uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev > > 3.00/1.00 addr 1 > > "Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured > > em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address > > 3c:97:0e:a6:02:36 > > ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16 > > usb1 at ehci0: USB revision 2.0 > > uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev > > 2.00/1.00 addr 1 > > azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi > > azalia0: codecs: Realtek ALC269, Intel/0x2806, using Realtek ALC269 > > audio0 at azalia0 > > ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi > > pci1 at ppb0 bus 2 > > sdhc0 at pci1 dev 0 function 0 "Ricoh 5U822 SD/MMC" rev 0x07: apic 2 int 16 > > sdhc0: SDHC 3.00, 50 MHz base clock > > sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed, dma > > ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi > > pci2 at ppb1 bus 3 > > iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x34: > > msi, MIMO 2T2R, MoW, address 6c:88:14:a0:a8:6c > > ppb2 at pci0 dev 28 function 2 "Intel 7 Series PCIE" rev 0xc4: msi > > pci3 at ppb2 bus 4 > > ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 23 > > usb2 at ehci1: USB revision 2.0 > > uhub2 at usb2 configuration 1 interface 0 "Intel EHCI root hub" rev > > 2.00/1.00 addr 1 > > pcib0 at pci0 dev 31 function 0 "Intel QM77 LPC" rev 0x04 > > ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI > > 1.3 > > ahci0: port 0: 6.0Gb/s > > scsibus1 at ahci0: 32 targets > > sd0 at scsibus1 targ 0 lun 0: <ATA, CT1000BX500SSD1, M6CR> > > naa.500a0751e66aff3b > > sd0: 953869MB, 512 bytes/sector, 1953525168 sectors, thin > > ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 > > int 18 > > iic0 at ichiic0 > > spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-12800 SO-DIMM > > spdmem1 at iic0 addr 0x51: 8GB DDR3 SDRAM PC3-12800 SO-DIMM > > isa0 at pcib0 > > isadma0 at isa0 > > pckbc0 at isa0 port 0x60/5 irq 1 irq 12 > > pckbd0 at pckbc0 (kbd slot) > > wskbd0 at pckbd0: console keyboard > > pms0 at pckbc0 (aux slot) > > wsmouse0 at pms0 mux 0 > > wsmouse1 at pms0 mux 0 > > pms0: Synaptics clickpad, firmware 8.1, 0x1e2b1 0x940300 0x194b40 0xd002a3 > > 0x123800 > > pcppi0 at isa0 port 0x61 > > spkr0 at pcppi0 > > vmm0 at mainbus0: VMX/EPT > > efifb at mainbus0 not configured > > uhidev0 at uhub0 port 2 configuration 1 interface 0 "Microsoft Microsoft > > Nano Transceiver 1.1" rev 2.00/3.15 addr 2 > > uhidev0: iclass 3/1 > > ukbd0 at uhidev0: 8 variable keys, 6 key codes > > scsibus2 at sdmmc0: 2 targets, initiator 0 > > sd1 at scsibus2 targ 1 lun 0: <Sandisk, SD01T, 0085> removable > > sd1: 976568MB, 512 bytes/sector, 2000011264 sectors > > wskbd1 at ukbd0 mux 1 > > uhidev1 at uhub0 port 2 configuration 1 interface 1 "Microsoft Microsoft > > Nano Transceiver 1.1" rev 2.00/3.15 addr 2 > > uhidev1: iclass 3/0, 3 report ids > > ucc0 at uhidev1 reportid 1: 573 usages, 20 keys, array > > wskbd2 at ucc0 mux 1 > > uhid0 at uhidev1 reportid 2: input=1, output=0, feature=0 > > uhid1 at uhidev1 reportid 3: input=2, output=0, feature=6 > > uhidev2 at uhub0 port 2 configuration 1 interface 2 "Microsoft Microsoft > > Nano Transceiver 1.1" rev 2.00/3.15 addr 2 > > uhidev2: iclass 3/1 > > ums0 at uhidev2: 5 buttons, Z dir > > wsmouse2 at ums0 mux 0 > > umsm0 at uhub0 port 4 configuration 1 interface 0 "Sierra Wireless Inc > > Sierra Wireless MC8355 - Gobi 3000(TM) Module" rev 2.00/0.02 addr 3 > > ucom0 at umsm0: usb0.0.00004.0 > > umsm1 at uhub0 port 4 configuration 1 interface 1 "Sierra Wireless Inc > > Sierra Wireless MC8355 - Gobi 3000(TM) Module" rev 2.00/0.02 addr 3 > > ucom1 at umsm1: usb0.0.00004.1 > > umsm2 at uhub0 port 4 configuration 1 interface 2 "Sierra Wireless Inc > > Sierra Wireless MC8355 - Gobi 3000(TM) Module" rev 2.00/0.02 addr 3 > > ucom2 at umsm2: usb0.0.00004.2 > > umsm3 at uhub0 port 4 configuration 1 interface 3 "Sierra Wireless Inc > > Sierra Wireless MC8355 - Gobi 3000(TM) Module" rev 2.00/0.02 addr 3 > > ucom3 at umsm3: usb0.0.00004.3 > > uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" > > rev 2.00/0.00 addr 2 > > ugen0 at uhub3 port 4 "Broadcom Corp BCM20702A0" rev 2.00/1.12 addr 3 > > uvideo0 at uhub3 port 6 configuration 1 interface 0 "Ricoh Company Ltd. > > Integrated Camera" rev 2.00/0.11 addr 4 > > video0 at uvideo0 > > uhub4 at uhub2 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" > > rev 2.00/0.00 addr 2 > > uhub5 at uhub4 port 8 configuration 1 interface 0 "Lenovo product 0x100a" > > rev 2.00/0.00 addr 3 > > uhidev3 at uhub5 port 2 configuration 1 interface 0 "Logitech USB Receiver" > > rev 2.00/29.00 addr 4 > > uhidev3: iclass 3/1 > > ukbd1 at uhidev3: 8 variable keys, 6 key codes > > wskbd3 at ukbd1 mux 1 > > uhidev4 at uhub5 port 2 configuration 1 interface 1 "Logitech USB Receiver" > > rev 2.00/29.00 addr 4 > > uhidev4: iclass 3/1, 17 report ids > > uhidpp0 at uhidev4 device 1 keyboard " ", device 2 mouse "" > > ums1 at uhidev4 reportid 2: 16 buttons, Z and W dir > > wsmouse3 at ums1 mux 0 > > ucc1 at uhidev4 reportid 3: 652 usages, 20 keys, array > > wskbd4 at ucc1 mux 1 > > uhid2 at uhidev4 reportid 4: input=1, output=0, feature=0 > > vscsi0 at root > > scsibus3 at vscsi0: 256 targets > > softraid0 at root > > scsibus4 at softraid0: 256 targets > > root on sd0a (93da0a9732b5574d.a) swap on sd0b dump on sd0b > > inteldrm0: 1366x768, 32bpp > > wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0 > > wskbd1: connecting to wsdisplay0 > > wskbd2: connecting to wsdisplay0 > > wskbd3: connecting to wsdisplay0 > > wskbd4: connecting to wsdisplay0 > > wsdisplay0: screen 1-5 added (std, vt100 emulation) > > umass0 at uhub5 port 1 configuration 1 interface 0 "USB 3.0 Device USB 3.0 > > Device" rev 2.10/3.01 addr 5 > > umass0: using SCSI over Bulk-Only > > scsibus5 at umass0: 2 targets, initiator 0 > > sd2 at scsibus5 targ 1 lun 0: <ICY BOX, IB-AC603b-U3, 0301> > > serial.152d05780000000046D1 > > sd2: 953869MB, 512 bytes/sector, 1953525168 sectors > > uaudio0 at uhub5 port 3 configuration 1 interface 1 "Speed Dragon USB > > Advanced Audio Device" rev 2.00/1.04 addr 6 > > uaudio0: class v1, full-speed, sync, channels: 2 play, 2 rec, 9 ctls > > audio1 at uaudio0 > > uhidev5 at uhub5 port 3 configuration 1 interface 3 "Speed Dragon USB > > Advanced Audio Device" rev 2.00/1.04 addr 6 > > uhidev5: iclass 3/0, 1 report id > > ucc2 at uhidev5 reportid 1: 7 usages, 7 keys, enum > > wskbd5 at ucc2 mux 1 > > wskbd5: connecting to wsdisplay0 > > > > usbdevs: > > Controller /dev/usb0: > > addr 01: 8086:0000 Intel, xHCI root hub > > super speed, self powered, config 1, rev 1.00 > > driver: uhub0 > > addr 02: 045e:07fd Microsoft, Microsoft Nano Transceiver 1.1 > > full speed, power 100 mA, config 1, rev 3.15 > > driver: uhidev0 > > driver: uhidev1 > > driver: uhidev2 > > addr 03: 1199:9013 Sierra Wireless Inc, Sierra Wireless MC8355 - Gobi > > 3000(TM) Module > > high speed, power 500 mA, config 1, rev 0.02 > > driver: umsm0 > > driver: umsm1 > > driver: umsm2 > > driver: umsm3 > > Controller /dev/usb1: > > addr 01: 8086:0000 Intel, EHCI root hub > > high speed, self powered, config 1, rev 1.00 > > driver: uhub1 > > addr 02: 8087:0024 Intel, Rate Matching Hub > > high speed, self powered, config 1, rev 0.00 > > driver: uhub3 > > addr 03: 0a5c:21e6 Broadcom Corp, BCM20702A0 > > full speed, self powered, config 1, rev 1.12, iSerial B8763FAD01B9 > > driver: ugen0 > > addr 04: 5986:02d2 Ricoh Company Ltd., Integrated Camera > > high speed, power 200 mA, config 1, rev 0.11 > > driver: uvideo0 > > Controller /dev/usb2: > > addr 01: 8086:0000 Intel, EHCI root hub > > high speed, self powered, config 1, rev 1.00 > > driver: uhub2 > > addr 02: 8087:0024 Intel, Rate Matching Hub > > high speed, self powered, config 1, rev 0.00 > > driver: uhub4 > > > > > > -- > > http://op59.net > > > > -- http://op59.net
