07-22-2005
Linux Benchmarks Makes No Sense
I created two computers with identical hardware, and run the benchmark programs in both starting at the same exact time.
What makes no sense is that the computer that has the lower average index (121) finished the race a good 30 minutes ahead of the computer wich showed the higher avg index (167). The only difference here were the operating systems, which I am not naming yet because it may have commercial implications, and frankly I need to understand the results before jumping to conclusions. Maybe lower index means better system? That would be absurd.
Anybody has any idea about what is happenning?
TEST BASELINE RESULT INDEX
Arithmetic Test (type = double) 2541.7 1062680.6 418.1
Dhrystone 2 without register variables 22366.3 5043054.8 225.5
Execl Throughput Test 16.5 132.0 8.0
File Copy (30 seconds) 179.0 10549.0 58.9
Pipe-based Context Switching Test 1318.5 2091.5 1.6
Shell scripts (8 concurrent) 4.0 63.3 15.8
=========
SUM of 6 items 727.9
AVERAGE 121.3
TEST BASELINE RESULT INDEX
Arithmetic Test (type = double) 2541.7 1156065.7 454.8
Dhrystone 2 without register variables 22366.3 7300029.6 326.4
Execl Throughput Test 16.5 63.1 3.8
File Copy (30 seconds) 179.0 38201.0 213.4
Pipe-based Context Switching Test 1318.5 3060.1 2.3
Shell scripts (8 concurrent) 4.0 24.0 6.0
=========
SUM of 6 items 1006.8
AVERAGE 167.8
This User Gave Thanks to philip_38 For This Post:
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LEARN ABOUT DEBIAN
go-testflag
GO-TESTFLAG(7) Miscellaneous Information Manual GO-TESTFLAG(7)
NAME
go - tool for managing Go source code
DESCRIPTION
The 'go test' command takes both flags that apply to 'go test' itself and flags that apply to the resulting test binary.
The test binary, called pkg.test, where pkg is the name of the directory containing the package sources, has its own flags:
-test.v
Verbose output: log all tests as they are run.
-test.run pattern
Run only those tests and examples matching the regular expression.
-test.bench pattern
Run benchmarks matching the regular expression. By default, no benchmarks run.
-test.cpuprofile cpu.out
Write a CPU profile to the specified file before exiting.
-test.memprofile mem.out
Write a memory profile to the specified file when all tests are complete.
-test.memprofilerate n
Enable more precise (and expensive) memory profiles by setting runtime.MemProfileRate. See 'godoc runtime MemProfileRate'. To pro-
file all memory allocations, use -test.memprofilerate=1 and set the environment variable GOGC=off to disable the garbage collector,
provided the test can run in the available memory without garbage collection.
-test.parallel n
Allow parallel execution of test functions that call t.Parallel. The value of this flag is the maximum number of tests to run
simultaneously; by default, it is set to the value of GOMAXPROCS.
-test.short
Tell long-running tests to shorten their run time. It is off by default but set during all.bash so that installing the Go tree can
run a sanity check but not spend time running exhaustive tests.
-test.timeout t
If a test runs longer than t, panic.
-test.benchtime n
Run enough iterations of each benchmark to take n seconds. The default is 1 second.
-test.cpu 1,2,4
Specify a list of GOMAXPROCS values for which the tests or benchmarks should be executed. The default is the current value of
GOMAXPROCS.
For convenience, each of these -test.X flags of the test binary is also available as the flag -X in 'go test' itself. Flags not listed
here are passed through unaltered. For instance, the command
go test -x -v -cpuprofile=prof.out -dir=testdata -update
will compile the test binary and then run it as
pkg.test -test.v -test.cpuprofile=prof.out -dir=testdata -update
AUTHOR
This manual page was written by Michael Stapelberg <stapelberg@debian.org>, for the Debian project (and may be used by others).
2012-05-13 GO-TESTFLAG(7)