[fpc-devel] FPC/Lazarus Rebuild performance

Jonas Maebe jonas.maebe at elis.ugent.be
Fri Sep 10 18:19:06 CEST 2010


On 10 Sep 2010, at 18:05, Adem wrote:

> On 2010-09-10 06:54 PM, Jonas Maebe wrote:
>>
>> On 10 Sep 2010, at 17:43, Adem wrote:
>>
>>>   SSD: 103,060 ms (1 min 43 sec)
>>> RAMDisk: 105,463 ms (1 min 46 sec)
>>>
>>> This doesn't make sense. FPC/Lazarus compiles on the faster medium  
>>> longer (albeit only 3 sec.).
>> Everything on your SSD is cached in RAM, so it's normal that both  
>> are about the same speed. The 3 seconds difference is probably just  
>> noise.
> I am sorry, but what you've just said doesn't make sense either --at  
> least to me.
>
> If that were true, wouldn't the disk benchmarks be also the same?

No. Disk benchmark specifically disable OS disk in order to be able to  
measure the actual disk throughput rather than just the speed of the  
OS buffer cache.


Jonas




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