Re: Benchmark - 2nd run

[Jean-Marc Zucconi <jmz@xxxxxxxxxxxxxx>]

>>>>> Matthew Dillon writes:

 >     If it isn't that it's got to be something else simple-stupid.
 >     The unusual system times for a user-cpu-bound program would 
 >     explain the horrible results on the other benchmarks.

I have found the origin of the problems with 5.2. The new ACPI code
generates more than 36000 interrupts per second on my hardware. (Asus
P2B-DS). Disabling ACPI improves the 5.2 perfs. Curiously there is not
a big  improvement for the lorenz test (now: 24.82 real / 24.80 user /
0.00 sys) but the bytebench benchmark is much closer to the 5.1
benchmark: 

Dhrystone 2 without register variables   661362.9 lps 
Dhrystone 2 using register variables     661430.8 lps 
Arithmetic Test (type = arithoh)        1055234.6 lps 
Arithmetic Test (type = register)         91672.9 lps 
Arithmetic Test (type = short)            88086.6 lps 
Arithmetic Test (type = int)              91662.9 lps 
Arithmetic Test (type = long)             91682.2 lps 
Arithmetic Test (type = float)           105154.2 lps 
Arithmetic Test (type = double)          105242.2 lps 
System Call Overhead Test                 82300.9 lps 
Pipe Throughput Test                      78012.8 lps 
Pipe-based Context Switching Test         23268.0 lps 
Process Creation Test                      1517.7 lps 
Execl Throughput Test                      1371.7 lps 
File Read  (10 seconds)                  181930.0 KBps
File Write (10 seconds)                   12033.0 KBps
File Copy  (10 seconds)                   11905.0 KBps
File Read  (30 seconds)                  182251.0 KBps
File Write (30 seconds)                   11933.0 KBps
File Copy  (30 seconds)                   11811.0 KBps
C Compiler Test                             241.2 lpm 
Shell scripts (1 concurrent)                572.2 lpm 
Shell scripts (2 concurrent)                324.9 lpm 
Shell scripts (4 concurrent)                163.9 lpm 
Shell scripts (8 concurrent)                 82.0 lpm 
Dc: sqrt(2) to 99 decimal places          54949.6 lpm 
Recursion Test--Tower of Hanoi             8382.6 lps 


                     INDEX VALUES            
TEST                                        BASELINE     RESULT      INDEX

Arithmetic Test (type = double)               2541.7   105242.2       41.4
Dhrystone 2 without register variables       22366.3   661362.9       29.6
Execl Throughput Test                           16.5     1371.7       83.1
File Copy  (30 seconds)                        179.0    11811.0       66.0
Pipe-based Context Switching Test             1318.5    23268.0       17.6
Shell scripts (8 concurrent)                     4.0       82.0       20.5
                                                                 =========
     SUM of  6 items                                                 258.2
     AVERAGE                                                          43.0

Jean-Marc

-- 
Jean-Marc Zucconi -- PGP Key: finger jmz@xxxxxxxxxxx [KeyID: 400B38E9]