ubuntu 16.04 became VERY slow

[robert rottermann]

On 19.12.2016 10:33, Colin Law wrote:
> On 19 December 2016 at 09:20, robert rottermann <robert at redcor.ch> wrote:
>> thanks colin
>> On 19.12.2016 09:56, Colin Law wrote:
>>> On 19 December 2016 at 08:40, robert rottermann <robert at redcor.ch> wrote:
>>>> Hi there,
>>>>
>>>> i am using ubuntu 16.04 on on a reasonably modern box.
>>>>
>>>> During the last couple of weeks it has become unbearably slow.
>>> Slow doing what?
>> everything  :(
>> switching from one window to an other with alt tab, can take 2secs or so.
>>>
>>> If you run
>>> tail -f /var/log/syslog
>>> which will show syslog as it is written to do you see significant
>>> activity there or anything like looks like ongoing errors?
>> no, here it is (and it seems rather static)
>>
>> root at mozart:/home/robert# tail -f /var/log/syslog -n 30
>>
>> Dec 19 10:09:24 mozart systemd[1]: Started ACPI event daemon.
>>
>> Dec 19 10:09:24 mozart systemd[1]: Started CUPS Scheduler.
>>
>> Dec 19 10:09:24 mozart smartd[12445]: Device: /dev/sdb [SAT], is SMART
>> capable. Adding to "monitor" list.
>>
>> Dec 19 10:09:24 mozart smartd[12445]: Monitoring 2 ATA and 0 SCSI devices
>>
>> Dec 19 10:09:25 mozart smartd[12445]: Device: /dev/sda [SAT], state written
>> to /var/lib/smartmontools/smartd.ST31000524AS-9VPGLDY0.ata.state
>>
>> Dec 19 10:09:25 mozart smartd[12445]: Device: /dev/sdb [SAT], state written
>> to
>> /var/lib/smartmontools/smartd.WDC_WD10EALX_089BA0-WD_WCATR8111487.ata.state
>>
>> Dec 19 10:10:01 mozart com.ubuntu.OneConf[2986]: WARNING:oneconf.hosts:Error
>> in loading other_hosts file: [Errno 2] No such file or directory:
>> '/home/robert/.cache/oneconf/813e56ef1c4f171bda95b46b5448007c/other_hosts'
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc2.device: Job
>> dev-sdc2.device/start timed out.
>>
>> Dec 19 10:10:50 mozart systemd[1]: Timed out waiting for device
>> dev-sdc2.device.
>>
>> Dec 19 10:10:50 mozart systemd[1]: Dependency failed for /dev/sdc2.
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc2.swap: Job dev-sdc2.swap/start
>> failed with result 'dependency'.
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc2.device: Job
>> dev-sdc2.device/start failed with result 'timeout'.
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc1.device: Job
>> dev-sdc1.device/start timed out.
>>
>> Dec 19 10:10:50 mozart systemd[1]: Timed out waiting for device
>> dev-sdc1.device.
>>
>> Dec 19 10:10:50 mozart systemd[1]: Dependency failed for /dev/sdc1.
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc1.swap: Job dev-sdc1.swap/start
>> failed with result 'dependency'.
>>
>> Dec 19 10:10:50 mozart systemd[1]: dev-sdc1.device: Job
>> dev-sdc1.device/start failed with result 'timeout'.
> I would start by understanding and sorting those problems.
>
> I see you have installed something like smartmontools. Did the
> problems start when you did that?
no, I installed smartmon, to answer your question about disk health
>
> Have you updated display drivers or something similar?
i did do all the regular updates, nothing else.
robert