ubuntu 16.04 became VERY slow

[Colin Law]

On 19 December 2016 at 10:18, robert rottermann <robert at redcor.ch> wrote:
>
>
> 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.

As I said, I would start by sorting the sdc problems. They may not be
related but my philosophy is always to fix the problems that you can
get a grasp on, even though it may not appear that they are related to
the problem you are trying to fix.

Colin