Date: Sun, 7 Jan 2018 12:28:37 +0800 From: blubee blubeeme <gurenchan@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: "O'Connor, Daniel" <darius@dons.net.au>, gljennjohn@gmail.com, FreeBSD current <freebsd-current@freebsd.org> Subject: Re: USB stack Message-ID: <CALM2mEkjLCvJXV-XKFV%2BCW1j12T-LrcVSuX4_mw8-BcaXFeqNg@mail.gmail.com> In-Reply-To: <CANCZdfomep_7MxOttAUXxN8a73sFsyKXvvc_TJ6jXad77ZBSbw@mail.gmail.com> References: <CALM2mEmZFP9dGOivJknrCaaa-K1cSxNTTEV%2B8XCMpoZp-xcbqQ@mail.gmail.com> <1FD1FE97-D25C-4BAC-A3E0-F22509FB0C2B@dons.net.au> <CALM2mE=7cKcPzJ=-bVvmHez2inrAqJsuMaW%2BUZZtXesB3pzDtQ@mail.gmail.com> <6A4FF1B9-D98B-4E73-9E3E-E951749E0C21@dons.net.au> <20180104092349.2821f9f9@ernst.home> <18F01F2F-8907-4CF8-A80A-B6B5C16593B7@dons.net.au> <CALM2mE=uFK0BVqxFcrU_K%2BN%2BwYnu9VTewACeNqPTGYFEv93g4g@mail.gmail.com> <CALM2mEmX_3F1ivmT2gRKjenFQwf3mEbGzb%2BFx4KbuVzZsQ=LWA@mail.gmail.com> <CANCZdfobwBwEDwcX=sz17rVh8DugTbJPjG0q6HWcgkoT0sQ=CQ@mail.gmail.com> <CALM2mEmmPeawLbKgkRf=bMo2W3d4OzmNY3cjmVAReE3C60nmLQ@mail.gmail.com> <CANCZdfomep_7MxOttAUXxN8a73sFsyKXvvc_TJ6jXad77ZBSbw@mail.gmail.com>
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On Sun, Jan 7, 2018 at 12:25 PM, Warner Losh <imp@bsdimp.com> wrote: > > > On Sat, Jan 6, 2018 at 9:20 PM, blubee blubeeme <gurenchan@gmail.com> > wrote: > >> >> >> On Sun, Jan 7, 2018 at 12:17 PM, Warner Losh <imp@bsdimp.com> wrote: >> >>> >>> >>> On Sat, Jan 6, 2018 at 9:08 PM, blubee blubeeme <gurenchan@gmail.com> >>> wrote: >>> >>>> On Sun, Jan 7, 2018 at 11:56 AM, blubee blubeeme <gurenchan@gmail.com> >>>> wrote: >>>> >>>> > I ask does FreeBSD usb stack actually implements USB spec 2.0 or >>>> greater >>>> > and the topic gets derailed...? >>>> > >>>> > Are you guys saying that 7-8MB/s is USB speeds? >>>> > >>>> > On Thu, Jan 4, 2018 at 6:44 PM, O'Connor, Daniel <darius@dons.net.au= > >>>> > wrote: >>>> > >>>> >> >>>> >> >>>> >> > On 4 Jan 2018, at 09:23, Gary Jennejohn <gljennjohn@gmail.com> >>>> wrote: >>>> >> >> What is an "LG v30"? >>>> >> >> >>>> >> > It's a smartphone from LG and only supports USB2 speed. The >>>> reported >>>> >> > transfer rate is no big surprise. >>>> >> >>>> >> OK thanks. >>>> >> >>>> >> -- >>>> >> Daniel O'Connor >>>> >> "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 >>>> >> >>>> >> >>>> > Actually, this post: https://forums.freebsd.org/threads/41041/ >>>> >>>> on the forum from 2013 pretty well describes what I am experiencing wh= en >>>> moving data over USB. >>>> >>>> I have no problems hitting very high read/ write speeds using dd or >>>> downloading something but copying by USB is excruciatingly slow. >>>> >>>> Why is that? >>> >>> >>> If you are copying a boatload of tiny files to USB there's two issues. >>> Both our UFS and MSDOS don't do well in this case. Second, for flash ba= sed >>> USB thumbdrives, most of them have horrible write performance unless yo= u >>> buy quality drives... >>> >>> Warner >>> >> I would consider this=EF=BC=9A https://www.samsung.com/ >> us/computing/memory-storage/memory-cards/micro-sd-evo-256gb- >> memory-card-w-adapter-mb-mc256da-am/ >> 256GB Samsung microsd card quality. >> > > At most, you can get 90MB/s read/write on this card. What are you seeing? > And how are you copying? > > Warner > I use the phone, LG V30 to record basically ungraded RAW video files to the microsd card; they are large files. I transfer them to my computer copy a backup to the 1TB driver; then do edits/ color grading, etc in blender, then I transfer the finished to another 1TB hdd for backup as well.
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