On Thu, Nov 26, 2020 at 2:47 AM Dimitry Andric <d...@freebsd.org> wrote:
> On 26 Nov 2020, at 01:10, tech-lists <tech-li...@zyxst.net> wrote: > > > > I have a usb3-connected harddrive. dmesg shows this: > > [...] > > da0: <ADATA HD710 0> Fixed Direct Access SPC-4 SCSI device > > [...] > > > > running current-r367806-arm64 > > > > I think it might be auto-spinning-down or auto-sleeping. It's > > making initial interaction lag of 2-3 seconds. Is there a sysctl or > something somewhere where I can tell it to never sleep? Or is that > something I'd need to contact the manufacturer about? Or is there an > alternative strategy like tmpfs. It's not a "green" drive but I guess it > might > > be "green" in that it's usb3 powered. > > > > I have vfs.read_max=128 in /etc/sysctl.conf > > zdb has ashift=12 > > > > In case it's relevant, the filesystem on the disk is zfs. Once > > "woken up", inferaction is quick, as expected. > > thanks, > > I have been using the attached rc.d script for a long time now, which > uses camcontrol(8)'s "apm" and "aam" commands to set drives to 'maximum > performance' (aka don't try to save power by shutting down all the > time). > > Just drop this into /usr/local/etc/rc.d, and add something like the > following to your rc.conf: > > camperf_devices="da0 da1" > camperf_enable="YES" > > You can also manually start the rc.d script by running: > > sudo service camperf start > Should we have this, or a similar 'standby' setting as well in base? this question comes up a lot... Warner _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
