libusb performance on 8.1
[re-sent from the correct address]
Hi,
I am building a USB interface to a radar data acquisition chassis based on the
Cypress CY7C68013A.
While doing some speed testing I find that FreeBSD does ~4Mb/sec, but Linux
does 17Mb/sec & OS X does 8-10Mb/sec.
It is using libusb-1.0 with the async API in a threaded app. I spawn a thread
which sites in the following loop:
while (!child_exit) {
tout.tv_sec = 0;
tout.tv_usec = 10;
libusb_handle_events_timeout(ctx, &tout);
}
ugsio_cancelusb();
The parent thread is the rest of the program which and handles reading data out
of the completed transfers and forwarding them to the data processing children
and re-submitting them to the USB stack.
I keep 8 transactions of 512 bytes each in flight. The device itself holds up
to 4 packets in a FIFO until the PC is ready. Increasing the number of
transactions in flight has no effect on performance.
Does anyone have a suggestion as to how I can look at improving performance?
Deploying Linux is not really an option :)
The Linux PC is..
Linux fpgawork 2.6.32-28-generic #55-Ubuntu SMP Mon Jan 10 23:42:43 UTC 2011
x86_64 GNU/Linux
The CPU is a Core 2 E6400 @ 2.13GHz on a Gigabyte 965P-DS3 rev 1
(http://www.gigabyte.com/products/product-page.aspx?pid=2314#ov) which has an
ICH8 chipset.
The FreeBSD PC is..
FreeBSD aumond8.gsoft.com.au 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19
02:55:53 UTC 2010 r...@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
i386
The CPU is a Core 2 E7500 @ 2.93GHz on a Supermicro C2SBA+
(http://www.supermicro.com/products/motherboard/Core/G33/C2SBA_.cfm) which has
an ICH9 chipset.
Any patches welcome!
Thanks.
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
___
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http://lists.freebsd.org/mailman/listinfo/freebsd-usb
To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
libusb performance on 8.1
Hi,
I am building a USB interface to a radar data acquisition chassis based on the
Cypress CY7C68013A.
While doing some speed testing I find that FreeBSD does ~4Mb/sec, but Linux
does 17Mb/sec & OS X does 8-10Mb/sec.
It is using libusb-1.0 with the async API in a threaded app. I spawn a thread
which sites in the following loop:
while (!child_exit) {
tout.tv_sec = 0;
tout.tv_usec = 10;
libusb_handle_events_timeout(ctx, &tout);
}
ugsio_cancelusb();
The parent thread is the rest of the program which and handles reading data out
of the completed transfers and forwarding them to the data processing children
and re-submitting them to the USB stack.
I keep 8 transactions of 512 bytes each in flight. The device itself holds up
to 4 packets in a FIFO until the PC is ready. Increasing the number of
transactions in flight has no effect on performance.
Does anyone have a suggestion as to how I can look at improving performance?
Deploying Linux is not really an option :)
The Linux PC is..
Linux fpgawork 2.6.32-28-generic #55-Ubuntu SMP Mon Jan 10 23:42:43 UTC 2011
x86_64 GNU/Linux
The CPU is a Core 2 E6400 @ 2.13GHz on a Gigabyte 965P-DS3 rev 1
(http://www.gigabyte.com/products/product-page.aspx?pid=2314#ov) which has an
ICH8 chipset.
The FreeBSD PC is..
FreeBSD aumond8.gsoft.com.au 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19
02:55:53 UTC 2010 r...@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
i386
The CPU is a Core 2 E7500 @ 2.93GHz on a Supermicro C2SBA+
(http://www.supermicro.com/products/motherboard/Core/G33/C2SBA_.cfm) which has
an ICH9 chipset.
Any patches welcome!
Thanks.
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
___
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http://lists.freebsd.org/mailman/listinfo/freebsd-usb
To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
page fault on device disconnect
I've accidentally cut power to my self-powered USB hdd enclosure with UFS+gjournal on GELI. The enclosure also acts as a hub and has single usb memory stick plugged in but not mounted. I kind of expected to have panic in VFS as is typical in such situations but instead it happened earlier in the stack: ugen3.2: at usbus3 (disconnected) uhub4: at uhub3, port 1, addr 2 (disconnected) Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xea7820aa fault code = supervisor read, page not present instruction pointer = 0x20:0xc0710d64 stack pointer = 0x28:0xe4239afc frame pointer = 0x28:0xe4239b0c code segment= base 0x0, limit 0xf, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags= interrupt enabled, resume, IOPL = 0 current process = 15 (usbus3) trap number = 12 panic: page fault cpuid = 0 KDB: stack backtrace: db_trace_self_wrapper(c076c1d5,d31206e,2c66000a,70797420,78302065,...) at db_trace_self_wrapper+0x26 kdb_backtrace(c078804a,0,c075dd75,e42399a8,0,...) at kdb_backtrace+0x2a panic(c075dd75,c0788d33,c3e43438,1,1,...) at panic+0x117 trap_fatal(c119,ea782000,1,0,c3e432d0,...) at trap_fatal+0x325 trap_pfault(0,0,9ed23521,c3e432d0,c3d82000,...) at trap_pfault+0x250 trap(e4239abc) at trap+0x453 calltrap() at calltrap+0x6 --- trap 0xc, eip = 0xc0710d64, esp = 0xe4239afc, ebp = 0xe4239b0c --- bus_dma_tag_destroy(ea78207a,c44767d0,c4476400,c44c10a0,e4239b44,...) at bus_dma_tag_destroy+0x14 usb_dma_tag_unsetup(c4476400,0,c09cc592,491,c44764b0,...) at usb_dma_tag_unsetup+0x3e usbd_transfer_unsetup_sub(c3e60dd4,0,c09cc592,4f0,0,...) at usbd_transfer_unsetup_sub+0xa0 usbd_transfer_unsetup(c44c10a0,1,c44c1200,1,0,...) at usbd_transfer_unsetup+0x1ad uhub_detach(c44c1200,c3d8f860,c079b618,e4239bc4,c0527199,...) at uhub_detach+0x3a device_detach(c44c1200,c09cbde6,c4466bd0,1,2,...) at device_detach+0x68 usb_detach_device(c447d000,ff,2,c447d0f0,c447d000,...) at usb_detach_device+0x3f usb_unconfigure(c44c9600,c09bb1f0,c3fda440,7f2,c3e60c78,...) at usb_unconfigure+0x36 usb_free_device(c447d000,0,1,10,c3e60dd4,...) at usb_free_device+0x18a uhub_explore(c3eba400,0,c09cb510,f7,c3e60d5c,...) at uhub_explore+0x128 usb_bus_explore(c3e60d5c,c3e60dd4,c09cc4e1,6c,c3e60d0c,...) at usb_bus_explore+0xb8 usb_process(c3e60cfc,e4239d28,492,18080458,3019040,...) at usb_process+0xaa fork_exit(c09c5890,c3e60cfc,e4239d28) at fork_exit+0x90 fork_trampoline() at fork_trampoline+0x8 --- trap 0, eip = 0, esp = 0xe4239d60, ebp = 0 --- Uptime: 30d19h59m54s (da0:umass-sim0:0:0:0): SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 (da0:umass-sim0:0:0:0): SCSI sense: Error code 0x3e # FreeBSD 8.2-PRERELEASE #0: Sun Dec 19 19:59:25 CET 2010 It's not really important to me but if someone wants to work on it I can provide more info. ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: gphoto2 and canon ixus 960is
On Wed, 19 Jan 2011 15:39:54 +0100 Hans Petter Selasky wrote: HPS> Have you correctly given permission to the HPS> corresponding /dev/ugenX.Y device? Do'h. Stupid me! I've set some devfs-rules so /dev/ugen* and /dev/usb* are +rw for group operator and now it works. Thanks, Jens -- 19. Hartung 2011, 16:18 Homepage : http://www.jan0sch.de Bride, n.: A woman with a fine prospect of happiness behind her. -- Ambrose Bierce, "The Devil's Dictionary" pgpkyaV45BG8n.pgp Description: PGP signature
Re: gphoto2 and canon ixus 960is
> > Have you correctly given permission to the corresponding /dev/ugenX.Y > device? Also check /dev/usbX.Y --HPS ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: gphoto2 and canon ixus 960is
On Wednesday 19 January 2011 13:17:21 Jens Jahnke wrote: > Hi, > > I just tried to import photos from my canon ixus 960is and but it is > not recognized. > > Output from /var/log/messages: > Jan 19 13:10:14 magni kernel: ugen7.2: at usbus7 > Jan 19 13:10:14 magni root: Unknown USB device: vendor 0x04a9 product > 0x315f bus uhub7 > > I found some hints on the ml archives from several years back and tried > the following command line: > jens@magni:~% gphoto2 --debug --debug-logfile=gphoto2.log --camera > "Canon Digital IXUS 960 IS (PTP mode)" --port "usb:" -l > *** Fehler *** > Ein Fehler trat in der IO-Bibliothek auf (»Falsche Parameter«): Keine > Fehlerbeschreibung verfügbar. *** Fehler (-2: »Falsche Parameter«) > *** > > The log file from gphoto2 is attached. > > Output of `uname -a`: > FreeBSD magni.rostock.home 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul > 19 02:36:49 UTC 2010 > r...@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 > > Any ideas? Have you correctly given permission to the corresponding /dev/ugenX.Y device? --HPS ___ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
gphoto2 and canon ixus 960is
Hi, I just tried to import photos from my canon ixus 960is and but it is not recognized. Output from /var/log/messages: Jan 19 13:10:14 magni kernel: ugen7.2: at usbus7 Jan 19 13:10:14 magni root: Unknown USB device: vendor 0x04a9 product 0x315f bus uhub7 I found some hints on the ml archives from several years back and tried the following command line: jens@magni:~% gphoto2 --debug --debug-logfile=gphoto2.log --camera "Canon Digital IXUS 960 IS (PTP mode)" --port "usb:" -l *** Fehler *** Ein Fehler trat in der IO-Bibliothek auf (»Falsche Parameter«): Keine Fehlerbeschreibung verfügbar. *** Fehler (-2: »Falsche Parameter«) *** The log file from gphoto2 is attached. Output of `uname -a`: FreeBSD magni.rostock.home 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC 2010 r...@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 Any ideas? Regards, Jens -- 19. Hartung 2011, 13:04 Homepage : http://www.jan0sch.de Larkinson's Law: All laws are basically false. gphoto2.log Description: Binary data pgpGvVm8iaWle.pgp Description: PGP signature
