[PATCH v1 10/10] vircaps2xmltest: Introduce HMAT test case

[Michal Prívozník]

On 6/4/21 2:50 PM, Martin Kletzander wrote:
> On Mon, May 31, 2021 at 10:36:11AM +0200, Michal Privoznik wrote:
>> This test was generated on a guest with the following NUMA
>> configuration:
>>
>>    <numa>
>>      <cell id='0' cpus='0-23' memory='4194304' unit='KiB' discard='yes'>
>>        <cache level='1' associativity='direct' policy='writeback'>
>>          <size value='10' unit='KiB'/>
>>          <line value='8' unit='B'/>
>>        </cache>
>>        <cache level='2' associativity='full' policy='writethrough'>
>>          <size value='128' unit='KiB'/>
>>          <line value='16' unit='B'/>
>>        </cache>
>>      </cell>
>>      <cell id='1' memory='2097152' unit='KiB'>
>>        <cache level='1' associativity='direct' policy='writeback'>
>>          <size value='10' unit='KiB'/>
>>          <line value='8' unit='B'/>
>>        </cache>
>>      </cell>
>>      <interconnects>
>>        <latency initiator='0' target='0' type='access' value='5'/>
>>        <latency initiator='0' target='0' type='read' value='6'/>
>>        <latency initiator='0' target='0' type='write' value='7'/>
>>        <latency initiator='0' target='1' type='access' value='10'/>
>>        <latency initiator='0' target='1' type='read' value='11'/>
>>        <latency initiator='0' target='1' type='write' value='12'/>
>>        <bandwidth initiator='0' target='0' type='access'
>> value='204800' unit='KiB'/>
>>        <bandwidth initiator='0' target='0' type='read' value='205824'
>> unit='KiB'/>
>>        <bandwidth initiator='0' target='0' type='write' value='206848'
>> unit='KiB'/>
>>        <bandwidth initiator='0' target='0' cache='1' type='access'
>> value='208896' unit='KiB'/>
>>        <bandwidth initiator='0' target='0' cache='1' type='read'
>> value='209920' unit='KiB'/>
>>        <bandwidth initiator='0' target='0' cache='1' type='write'
>> value='210944' unit='KiB'/>
>>        <bandwidth initiator='0' target='1' type='access'
>> value='102400' unit='KiB'/>
>>        <bandwidth initiator='0' target='1' type='read' value='103424'
>> unit='KiB'/>
>>        <bandwidth initiator='0' target='1' type='write' value='104448'
>> unit='KiB'/>
>>        <bandwidth initiator='0' target='1' cache='1' type='access'
>> value='105472' unit='KiB'/>
>>        <bandwidth initiator='0' target='1' cache='1' type='read'
>> value='106496' unit='KiB'/>
>>        <bandwidth initiator='0' target='1' cache='1' type='write'
>> value='107520' unit='KiB'/>
>>      </interconnects>
>>    </numa>
>>
>> The sysfs content was also copied over from the VM but only those
>> files which are accessed in the test are stored in the repo.
>>
>> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
>> ---
> 
> This unfortunately introduces symbolic link loops.  They are fine in
> sysfs, but we always had issues with them when running distcheck and
> similar.
> 
> I tried it now and did not reproduce the exact issue, but it still is
> not nice (global -u complains, some programs might just end up in an
> infinite loop).  Historically we replicated "just enough" to use it in
> tests, but not so much that it would introduce loops.  I would prefer if
> it stayed that way.

Yeah, I remember us fixing this, but I don't recall all the details.
I'll switch to files.

Michal