On May 02 13:04:54, s...@spacehopper.org wrote:
> On 2024/05/01 21:04, Jan Stary wrote:
> > On May 01 11:00:12, s...@spacehopper.org wrote:
> > > On 2024/05/01 11:21, Jan Stary wrote:
> > > > Hi,
> > > >
> > > > On Apr 26 20:46:51, b...@comstyle.com wrote:
> > > > > Implement SSE2 lrint() and lrintf() on amd64.
> > > >
> > > > I don't think this is worth the added complexity:
> > > > seven more patches to have a different lrint()?
> > > > Does it make the resampling noticably better/faster?
> > >
> > > Playing with the benchmark mentioned in
> > > https://github.com/libsndfile/libsamplerate/issues/187
> > > suggests that it's going to be *hugely* faster with clang (and a bit
> > > faster with gcc).
> >
> > This talks about a MSVC build compared to a MinGW64 build on windows.
> > Is that also relevant to an AMD64 build on OpenBSD? I just rebuilt
> > with the diff - what would be a good way to test the actual performance
> > before and after?
>
> oh, actually it was the bench in the linked PR that I played with,
>
> https://github.com/libsndfile/libsndfile/pull/663
> -> https://quick-bench.com/q/OabKT-gEOZ8CYDriy1JEwq1lEsg
>
> where there's a huge difference in clang builds.
Sorry, I don't understand at all how this concerns
the OpenBSD port of libsamplerate: the Benchmark does not
mention an OS or an architecture, so what is this being run on?
Anyway, just running it (Run Benchmark) gives the result
of cpu_time of 722.537 for BM_d2les_array (using lrint)
and cpu_time of 0 for BM_d2les_array_sse2 (using psf_lrint),
reporting a speedup ratio of 200,000,000.
That's not an example of what I have in mind: a simple application
of libsamplerate, sped up by the usage of the new SSE2 lrint,
as in Brad's diff.
I am not sure my naive test is a test at all, as it operates on floats,
so perhaps lrint() never even comes to play. That is libsamplerate's
"simple API" - I will try to come up with something that actualy
conevrts to ints while resampling. But maybe someone already has
a good example of such a speedup.
Jan
> On 2024/05/01 22:14, Jan Stary wrote:
> > > what would be a good way to test the actual performance before and after?
>
> any suggestions Brad?
>
> > OK, here's a naive example: using SRC_LINEAR,
> > convert 4 hours of silence from 48000 to 44100.
> >
> > Before:
> >
> > 0m17.23s real 0m11.63s user 0m03.52s system
> > 0m17.03s real 0m11.35s user 0m03.58s system
> > 0m17.55s real 0m11.68s user 0m03.72s system
> >
> > After:
> >
> > 0m17.98s real 0m12.40s user 0m03.41s system
> > 0m17.98s real 0m12.13s user 0m03.78s system
> > 0m18.10s real 0m12.44s user 0m03.57s system
> >
> > Same thing with four hours worth of a sine wave:
> >
> > Before:
> >
> > 0m29.87s real 0m24.28s user 0m03.42s system
> > 0m29.85s real 0m23.79s user 0m03.77s system
> > 0m29.75s real 0m24.28s user 0m03.21s system
> >
> > After:
> >
> > 0m30.54s real 0m24.91s user 0m03.55s system
> > 0m30.51s real 0m24.70s user 0m03.64s system
> > 0m30.65s real 0m24.91s user 0m03.44s system
> >
> > This is an amd64 machine using clang 16.0.6
> > Is my test naive? Am I missing something?
> > (How much lrintf gets used inside this?)
> >
> > Jan
> >
> >
> >
> > OpenBSD 7.5-current (GENERIC.MP) #34: Sat Apr 27 21:19:57 MDT 2024
> > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> > real mem = 8285454336 (7901MB)
> > avail mem = 8013254656 (7642MB)
> > random: good seed from bootblocks
> > mpath0 at root
> > scsibus0 at mpath0: 256 targets
> > mainbus0 at root
> > bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf0100 (36 entries)
> > bios0: vendor Award Software International, Inc. version "F3" date
> > 03/31/2011
> > bios0: Gigabyte Technology Co., Ltd. H67MA-USB3-B3
> > acpi0 at bios0: ACPI 1.0
> > acpi0: sleep states S0 S3 S4 S5
> > acpi0: tables DSDT FACP HPET MCFG ASPT SSPT EUDS MATS TAMG APIC SSDT
> > acpi0: wakeup devices PCI0(S5) PEX0(S5) PEX1(S5) PEX2(S5) PEX3(S5) PEX4(S5)
> > PEX5(S5) PEX6(S5) PEX7(S5) HUB0(S5) UAR1(S3) USBE(S3) USE2(S3) AZAL(S5)
> > acpitimer0 at acpi0: 3579545 Hz, 24 bits
> > acpihpet0 at acpi0: 14318179 Hz
> > acpimcfg0 at acpi0
> > acpimcfg0: addr 0xf4000000, bus 0-63
> > acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> > cpu0 at mainbus0: apid 0 (boot processor)
> > cpu0: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.09 MHz, 06-2a-07, patch
> > 0000002f
> > cpu0:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-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, 10 var ranges, 88 fixed ranges
> > cpu0: apic clock running at 99MHz
> > 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) i7-2600 CPU @ 3.40GHz, 3492.12 MHz, 06-2a-07, patch
> > 0000002f
> > cpu1:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu1: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu1: smt 0, core 1, package 0
> > cpu2 at mainbus0: apid 4 (application processor)
> > cpu2: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.19 MHz, 06-2a-07, patch
> > 0000002f
> > cpu2:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu2: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu2: smt 0, core 2, package 0
> > cpu3 at mainbus0: apid 6 (application processor)
> > cpu3: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.25 MHz, 06-2a-07, patch
> > 0000002f
> > cpu3:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu3: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu3: smt 0, core 3, package 0
> > cpu4 at mainbus0: apid 1 (application processor)
> > cpu4: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.21 MHz, 06-2a-07, patch
> > 0000002f
> > cpu4:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu4: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu4: smt 1, core 0, package 0
> > cpu5 at mainbus0: apid 3 (application processor)
> > cpu5: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.33 MHz, 06-2a-07, patch
> > 0000002f
> > cpu5:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu5: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu5: smt 1, core 1, package 0
> > cpu6 at mainbus0: apid 5 (application processor)
> > cpu6: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.25 MHz, 06-2a-07, patch
> > 0000002f
> > cpu6:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu6: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu6: smt 1, core 2, package 0
> > cpu7 at mainbus0: apid 7 (application processor)
> > cpu7: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3492.37 MHz, 06-2a-07, patch
> > 0000002f
> > cpu7:
> > 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,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,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,MELTDOWN
> > cpu7: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> > 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> > cpu7: smt 1, core 3, package 0
> > ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins, remapped
> > acpiprt0 at acpi0: bus 0 (PCI0)
> > acpiprt1 at acpi0: bus 1 (PEG0)
> > acpiprt2 at acpi0: bus -1 (PEG1)
> > acpiprt3 at acpi0: bus 2 (PEX0)
> > acpiprt4 at acpi0: bus -1 (PEX1)
> > acpiprt5 at acpi0: bus -1 (PEX2)
> > acpiprt6 at acpi0: bus -1 (PEX3)
> > acpiprt7 at acpi0: bus 3 (PEX4)
> > acpiprt8 at acpi0: bus 4 (PEX5)
> > acpiprt9 at acpi0: bus 5 (PEX6)
> > acpiprt10 at acpi0: bus 6 (PEX7)
> > acpibtn0 at acpi0: PWRB
> > acpipci0 at acpi0 PCI0
> > acpicmos0 at acpi0
> > com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
> > acpicpu0 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu1 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu2 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu3 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu4 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu5 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu6 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > acpicpu7 at acpi0: C3(350@96 mwait.1@0x20), C2(500@64 mwait.1@0x10),
> > C1(1000@1 mwait.1), PSS
> > cpu0: using VERW MDS workaround (except on vmm entry)
> > cpu0: Enhanced SpeedStep 3492 MHz: speeds: 3701, 3700, 3600, 3500, 3400,
> > 3300, 3200, 3100, 3000, 2900, 2800, 2700, 2600, 2500, 2400, 2300, 2200,
> > 2100, 1600 MHz
> > pci0 at mainbus0 bus 0
> > pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
> > ppb0 at pci0 dev 1 function 0 "Intel Core 2G PCIE" rev 0x09: apic 2 int 16
> > pci1 at ppb0 bus 1
> > nvme0 at pci1 dev 0 function 0 vendor "Kingston", unknown product 0x5017
> > rev 0x03: apic 2 int 16, NVMe 1.4
> > nvme0: KINGSTON SNV2S2000G, firmware SBM02103, serial 50026B76861D2EE0
> > scsibus1 at nvme0: 2 targets, initiator 0
> > sd0 at scsibus1 targ 1 lun 0: <NVMe, KINGSTON SNV2S20, SBM0>
> > sd0: 1907729MB, 512 bytes/sector, 3907029168 sectors
> > inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 2000" rev 0x09
> > drm0 at inteldrm0
> > inteldrm0: apic 2 int 16, SANDYBRIDGE, gen 6
> > "Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
> > ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x05: apic 2 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
> > azalia0 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x05: apic
> > 2 int 22
> > azalia0: codecs: Realtek ALC889, Intel/0x2805, using Realtek ALC889
> > audio0 at azalia0
> > ppb1 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb5: apic 2 int 16
> > pci2 at ppb1 bus 2
> > ppb2 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb5: apic 2 int 16
> > pci3 at ppb2 bus 3
> > nvme1 at pci3 dev 0 function 0 vendor "Kingston", unknown product 0x5017
> > rev 0x03: apic 2 int 16, NVMe 1.4
> > nvme1: KINGSTON SNV2S2000G, firmware SBM02103, serial 50026B768680E52A
> > scsibus2 at nvme1: 2 targets, initiator 0
> > sd1 at scsibus2 targ 1 lun 0: <NVMe, KINGSTON SNV2S20, SBM0>
> > sd1: 1907729MB, 512 bytes/sector, 3907029168 sectors
> > ppb3 at pci0 dev 28 function 5 "Intel 6 Series PCIE" rev 0xb5: apic 2 int 17
> > pci4 at ppb3 bus 4
> > nvme2 at pci4 dev 0 function 0 "Intel NVMe" rev 0x03: apic 2 int 17, NVMe
> > 1.3
> > nvme2: INTEL SSDPEKNW512G8, firmware 002C, serial PHNH9323049T512A
> > scsibus3 at nvme2: 2 targets, initiator 0
> > sd2 at scsibus3 targ 1 lun 0: <NVMe, INTEL SSDPEKNW51, 002C>
> > sd2: 488386MB, 512 bytes/sector, 1000215216 sectors
> > ppb4 at pci0 dev 28 function 6 "Intel 6 Series PCIE" rev 0xb5: apic 2 int 18
> > pci5 at ppb4 bus 5
> > re0 at pci5 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E-VL
> > (0x2c80), apic 2 int 18, address 50:e5:49:36:ec:0d
> > rgephy0 at re0 phy 7: RTL8169S/8110S/8211 PHY, rev. 5
> > ppb5 at pci0 dev 28 function 7 "Intel 6 Series PCIE" rev 0xb5: apic 2 int 19
> > pci6 at ppb5 bus 6
> > xhci0 at pci6 dev 0 function 0 "Etron EJ168 xHCI" rev 0x01: apic 2 int 19,
> > xHCI 1.0
> > usb1 at xhci0: USB revision 3.0
> > uhub1 at usb1 configuration 1 interface 0 "Etron xHCI root hub" rev
> > 3.00/1.00 addr 1
> > ehci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x05: 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
> > ppb6 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xa5
> > pci7 at ppb6 bus 7
> > pcib0 at pci0 dev 31 function 0 "Intel H67 LPC" rev 0x05
> > ahci0 at pci0 dev 31 function 2 "Intel 6 Series AHCI" rev 0x05: apic 2 int
> > 19, AHCI 1.3
> > ahci0: port 0: 6.0Gb/s
> > ahci0: port 2: 3.0Gb/s
> > ahci0: port 4: 3.0Gb/s
> > scsibus4 at ahci0: 32 targets
> > sd3 at scsibus4 targ 0 lun 0: <ATA, SanDisk SD7SN3Q0, X217>
> > naa.5001b44c52e5d2a1
> > sd3: 61057MB, 512 bytes/sector, 125045424 sectors, thin
> > sd4 at scsibus4 targ 2 lun 0: <ATA, ST2000DM008-2FR1, 0001>
> > naa.5000c500c128f41c
> > sd4: 1907729MB, 512 bytes/sector, 3907029168 sectors, thin
> > sd5 at scsibus4 targ 4 lun 0: <ATA, KINGSTON SA400S3, S340>
> > naa.50026b7381124414
> > sd5: 915715MB, 512 bytes/sector, 1875385008 sectors, thin
> > ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x05: apic 2
> > int 18
> > iic0 at ichiic0
> > spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-12800
> > spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM PC3-12800
> > isa0 at pcib0
> > isadma0 at isa0
> > pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> > pcppi0 at isa0 port 0x61
> > spkr0 at pcppi0
> > it0 at isa0 port 0x2e/2: IT8728F rev 1, EC port 0x290
> > vmm0 at mainbus0: VMX/EPT
> > uhub3 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching Hub"
> > rev 2.00/0.00 addr 2
> > uhidev0 at uhub3 port 5 configuration 1 interface 0 "Logitech USB Keyboard"
> > rev 1.10/64.00 addr 3
> > uhidev0: iclass 3/1
> > ukbd0 at uhidev0: 8 variable keys, 6 key codes
> > wskbd0 at ukbd0: console keyboard
> > uhidev1 at uhub3 port 5 configuration 1 interface 1 "Logitech USB Keyboard"
> > rev 1.10/64.00 addr 3
> > uhidev1: iclass 3/0, 3 report ids
> > ucc0 at uhidev1 reportid 1: 2 usages, 3 keys, enum
> > wskbd1 at ucc0 mux 1
> > uhid0 at uhidev1 reportid 2: input=1, output=0, feature=0
> > ucc1 at uhidev1 reportid 3: 21 usages, 14 keys, enum
> > wskbd2 at ucc1 mux 1
> > uhidev2 at uhub3 port 6 configuration 1 interface 0 "Genius Optical Mouse"
> > rev 1.10/1.00 addr 4
> > uhidev2: iclass 3/1
> > ums0 at uhidev2: 3 buttons, Z dir
> > wsmouse0 at ums0 mux 0
> > uhub4 at uhub2 port 1 configuration 1 interface 0 "Intel Rate Matching Hub"
> > rev 2.00/0.00 addr 2
> > vscsi0 at root
> > scsibus5 at vscsi0: 256 targets
> > softraid0 at root
> > scsibus6 at softraid0: 256 targets
> > root on sd3a (761a7a05237a5a1d.a) swap on sd3b dump on sd3b
> > inteldrm0: 1360x768, 32bpp
> > wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
> > wskbd1: connecting to wsdisplay0
> > wskbd2: connecting to wsdisplay0
> > wsdisplay0: screen 1-5 added (std, vt100 emulation)
>
> > #include <stdlib.h>
> > #include <math.h>
> > #include <err.h>
> >
> > #include <samplerate.h>
> >
> > int
> > main()
> > {
> > float irate = 48000;
> > float orate = 44100;
> > float *signal = NULL;
> >
> > long time = 60 * 60 * 4;
> > long len = irate * time;
> >
> > SRC_DATA data;
> > float t;
> > long s;
> >
> > signal = calloc(len, sizeof(float));
> > for (t = 0, s = 0; s < len; t += 1/irate, s++)
> > signal[s] = sin(t);
> > /*signal[s] = 0;*/
> >
> > data.data_in = signal;
> > data.data_out = calloc(len, sizeof(float));
> > data.src_ratio = (1.0 * orate) / irate;
> > data.input_frames = len;
> > data.output_frames = len;
> >
> > if (src_simple (&data, SRC_LINEAR, 1)) {
> > /*
> > See api_misc.md#error-reporting for how to convert
> > the error value into a text string.
> > */
> > warnx("rate conversion error");
> > }
> >
> > if (data.input_frames_used < len)
> > warnx("Only %ld < %ld used", data.input_frames_used, len);
> > if (data.output_frames_gen < (orate * time))
> > warnx("Only %ld < %ld generated",
> > data.output_frames_gen, (long) orate * time);
> >
> > return 0;
> > }
> >
>
>
>
