Re: how to find reason for computer pausing often?
Derek Sivers wrote: > This past month or so, my Lenovo T440s laptop has started doing > strange 2-second pauses at random intervals, sometimes a few times > per minute. [...] > I know it isn't an OpenBSD problem, but any suggestions where you'd > look if it was you? Try changing SATA mode in BIOS from AHCI to IDE to disable what seems to be faulty power saving support from your drive? As per https://odd.blog/2013/11/26/yes-finally-fixed-ssd-freezing-computer/
Re: how to find reason for computer pausing often?
On Wed, Aug 08, 2018 at 08:59:40AM +0200, Solene Rapenne wrote: > Derek Sivers wrote: > > This past month or so, my Lenovo T440s laptop has started doing strange > > 2-second pauses at random intervals, sometimes a few times per minute. > > > > How would you look for the source of this trouble? There's nothing in > > /var/log showing when it happens. No log entries added there. Where else > > would you look? > > > > The easiest way to spot it in action is with a simple ls : > > > > cd /tmp > > mkdir a b c > > time ls a > > 0m00.00s real 0m00.00s user 0m00.01s system > > time ls b > > 0m03.22s real 0m00.00s user 0m00.01s system # there is the > > random pause > > time ls c > > 0m00.00s real 0m00.00s user 0m00.00s system > > time ls b > > 0m00.00s real 0m00.00s user 0m00.00s system > > > > I've tried it running OpenBSD 6.3 RELEASE, STABLE, and CURRENT. Happens > > with all. > > > > I wiped the entire drive (dd if=/dev/zero) then re-installed from scratch, > > and it still happens. > > > > It happens whether running X or just in the initial raw console without > > startx. > > > > I know it isn't an OpenBSD problem, but any suggestions where you'd look if > > it was you? > > > > Thank you. > > > > - Derek > > Hi Derek > > I think that your hard drive is failing. Is it a SSD? If no, it's > typical of an old failing hard disk. > > Could you try to mount a mfs filesystem and see if your example makes a > pause? That should not trigger any disk read as it's an in-memory > filesystem, if it doesn't block that mean that the hard disk is failing. Thanks for the reply and suggestion. It's an SSD - https://www.cnet.com/products/adata-premier-sp600ns34-solid-state-drive-128-gb-sata-6gb-s/specs/ - but I'll try the MFS thing, too.
Re: how to find reason for computer pausing often?
Derek Sivers wrote: > This past month or so, my Lenovo T440s laptop has started doing strange > 2-second pauses at random intervals, sometimes a few times per minute. > > How would you look for the source of this trouble? There's nothing in > /var/log showing when it happens. No log entries added there. Where else > would you look? > > The easiest way to spot it in action is with a simple ls : > > cd /tmp > mkdir a b c > time ls a > 0m00.00s real 0m00.00s user 0m00.01s system > time ls b > 0m03.22s real 0m00.00s user 0m00.01s system # there is the > random pause > time ls c > 0m00.00s real 0m00.00s user 0m00.00s system > time ls b > 0m00.00s real 0m00.00s user 0m00.00s system > > I've tried it running OpenBSD 6.3 RELEASE, STABLE, and CURRENT. Happens with > all. > > I wiped the entire drive (dd if=/dev/zero) then re-installed from scratch, > and it still happens. > > It happens whether running X or just in the initial raw console without > startx. > > I know it isn't an OpenBSD problem, but any suggestions where you'd look if > it was you? > > Thank you. > > - Derek Hi Derek I think that your hard drive is failing. Is it a SSD? If no, it's typical of an old failing hard disk. Could you try to mount a mfs filesystem and see if your example makes a pause? That should not trigger any disk read as it's an in-memory filesystem, if it doesn't block that mean that the hard disk is failing.
how to find reason for computer pausing often?
This past month or so, my Lenovo T440s laptop has started doing strange 2-second pauses at random intervals, sometimes a few times per minute. How would you look for the source of this trouble? There's nothing in /var/log showing when it happens. No log entries added there. Where else would you look? The easiest way to spot it in action is with a simple ls : cd /tmp mkdir a b c time ls a 0m00.00s real 0m00.00s user 0m00.01s system time ls b 0m03.22s real 0m00.00s user 0m00.01s system # there is the random pause time ls c 0m00.00s real 0m00.00s user 0m00.00s system time ls b 0m00.00s real 0m00.00s user 0m00.00s system I've tried it running OpenBSD 6.3 RELEASE, STABLE, and CURRENT. Happens with all. I wiped the entire drive (dd if=/dev/zero) then re-installed from scratch, and it still happens. It happens whether running X or just in the initial raw console without startx. I know it isn't an OpenBSD problem, but any suggestions where you'd look if it was you? Thank you. - Derek
