Slow disk I/O - was Re: Seeking Help

[geoff at thebakershome.net]

>>>- Computer has 32 GB of ram and an Intel i7 3770 CPU.
>>> Primary HDD is a Samsung 840 Pro (SSD)
>>
>> Might want to see where the bottleneck is.
>>
>> Which ram do you have? Brand and model number. How many modules? If you
>> have
>> two dimms, which slots are they in? What speed is the ram running?
>
> Four dimms, each one is 8 GB, 1333 MHz, Corsair
>
>>
>> Run memtest86+ and see what bandwidth is reported for the cpu caches and
>> the
>> main ram. (in MB/s) Let the test run a couple of passes at least to see
>> if
>> the ram is defective.
>>
>> For the drives, boot Ubuntu Live and use the Disk Utility to read the
>> drive's health according to SMART, and run the 'read only' Benchmark on
>> each
>> drive. That SSD drive should nice speeds.
>>
>

I booted using the Ubuntu 12.10 install CD and selected Try Ubuntu. I then
tried to run the benchmark using the Disk Utility but it gave an error for
every drive:

"Error seeking to offset <number>"

So that did not work.

I did the memtest86 to determine RAM speed. It is listing at 17118 MB/s
and 32 GB size.



> I will get this information right away. Preparing a paste bin with other
> information first.
>
>> When you install Ubuntu, do you specify a partition layout manually, or
>> just
>> let Ubuntu format the boot drive as it likes?
>
> I did it manually. I let the SSD be configured by default as /
> One Platter ( 1 TB) as /home/ and this drive has the swap partition
>
>>
>> Do you automatically install packages that you've used for years, or is
>> it
>> a
>> pristine install?
>
> Pristine install, though I have since started to add more packages, but
> this happened from the start
>
>>
>> Do you change bios settings from the defaults for anything? If so, load
>> optimized or safe defaults and try.
>
> I have set it to optimized defaults, but it does not help
>
>>
>>
>>
>>
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>
>
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