Ben daha çok
http://www.cpubenchmark.net/high_end_cpus.html bu listeyi merak ediyorum. Pek çoğumuz bu listeyi baz alıyoruz ama bana ciddi tutarsızlıklar var gibi geliyor.i7 işlemciler, pek çok üst düzey Xeon işlemciden daha falza puan almış ve bununda ötesinde bazı düşük alt modeller, üst modellerinden daha fazla puan almış. Örnek vermek gerekirse,
Intel Xeon X5650 @ 2.67GHz 7,765 puan alırken, bir alt modeli olan Intel Xeon X5660 @ 2.80GHz 7,015 puan alıyor. Bu tablodaki testler neye göre yapılıyor ve ne kadar sağlıklı? Ben açıkçası pek de sağlıklı olduğunu düşünmüyorum şu örnekten sonra.
Merhabalar : Benchmark testleri hic bir zaman %100 sonuclar vermez fakat yeni bir sunucu yatirimi yapacaginizda size az bucuk fikirler verebilir , mesela dun yaptigim bir kac islemci testinden size bir kac enstantene sunabilirim ;
2X5430 2.66GHz (2 fiziksel islemcili)Quadcore 8 cekirdek - 12GB DDR2 RAM
Benchmark sonucu :
------------------------------------------------------------------------
Benchmark Run: Sun Aug 08 2010 17:13:52 - 17:38:05
8 CPUs in system; running 8 parallel copies of tests
Dhrystone 2 using register variables 90366849.6 lps (10.0 s, 7 samples)
Double-Precision Whetstone 19096.4 MWIPS (10.1 s, 7 samples)
Execl Throughput 20090.9 lps (30.0 s, 2 samples)
Pipe Throughput 4018098.2 lps (10.0 s, 7 samples)
Pipe-based Context Switching 1546855.1 lps (10.0 s, 7 samples)
Process Creation 63629.9 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 30394.6 lpm (60.0 s, 2 samples)
Shell Scripts (16 concurrent) 2400.0 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 4762.2 lpm (60.0 s, 2 samples)
System Call Overhead 2203295.7 lps (10.0 s, 7 samples)
System Benchmarks Partial Index BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 90366849.6 7743.5
Double-Precision Whetstone 55.0 19096.4 3472.1
Execl Throughput 43.0 20090.9 4672.3
Pipe Throughput 12440.0 4018098.2 3230.0
Pipe-based Context Switching 4000.0 1546855.1 3867.1
Process Creation 126.0 63629.9 5050.0
Shell Scripts (1 concurrent) 42.4 30394.6 7168.5
Shell Scripts (16 concurrent) --- 2400.0 ---
Shell Scripts (8 concurrent) 6.0 4762.2 7937.0
System Call Overhead 15000.0 2203295.7 1468.9
========
System Benchmarks Index Score (Partial Only) 4433.8
Simdi tek fiziksel islemcili Xeon 3460 HT 2.80GHz 8 cekirdek - 4GB RAM DDR3
Bencmark sonucu :
------------------------------------------------------------------------
Benchmark Run: Sun Aug 08 2010 18:52:16 - 19:16:06
8 CPUs in system; running 8 parallel copies of tests
Dhrystone 2 using register variables 59716676.6 lps (10.0 s, 7 samples)
Double-Precision Whetstone 18199.7 MWIPS (10.2 s, 7 samples)
Execl Throughput 28119.0 lps (30.0 s, 2 samples)
Pipe Throughput 4506101.1 lps (10.0 s, 7 samples)
Pipe-based Context Switching 1492913.5 lps (10.0 s, 7 samples)
Process Creation 91171.5 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 34835.1 lpm (60.0 s, 2 samples)
Shell Scripts (16 concurrent) 2521.7 lpm (60.1 s, 2 samples)
Shell Scripts (8 concurrent) 5051.0 lpm (60.0 s, 2 samples)
System Call Overhead 6452069.4 lps (10.0 s, 7 samples)
System Benchmarks Partial Index BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 59716676.6 5117.1
Double-Precision Whetstone 55.0 18199.7 3309.0
Execl Throughput 43.0 28119.0 6539.3
Pipe Throughput 12440.0 4506101.1 3622.3
Pipe-based Context Switching 4000.0 1492913.5 3732.3
Process Creation 126.0 91171.5 7235.8
Shell Scripts (1 concurrent) 42.4 34835.1 8215.8
Shell Scripts (16 concurrent) --- 2521.7 ---
Shell Scripts (8 concurrent) 6.0 5051.0 8418.3
System Call Overhead 15000.0 6452069.4 4301.4
========
System Benchmarks Index Score (Partial Only) 5286.1
Gordugunuz gibi cok enteresan sekilde 2 islemcili 5430 2.66GHZ - 12gb ram DDR3 benchmark skoru : "4433.8" fakat Tek islemcili Xeon 3460 2.80GHZ Hyper-threading 8 cekirdek benchmark puani "5286.1".
Bu 2 sunucuyu yurtdisinda kiralamaya kalksaniz 2x5430 , 3460 'dan en asagi 100$ daha pahali , mesela bu testleri gordukten sonra 2X5430 sahipleri varsa 3460 'a gecmeleri onlara daha iyi performansi daha ucuza almalarini saglayacak.Tabiki Database uygulamarinda cache on plana cikacagi icin 2X5430 'un cache'si daha (2x12mb) fazla ve o tur bir operasyon icin daha uygun.
O yuzden bu tarz testler yapilmali ve arsiv olusturulmali.
iyi calismalar.