LLCbench的安装和使用 ubuntu入门之十六

user@localhost:~$ tar -zxf llcbench.tar.gz 
user@localhost:~$ ls
Desktop    Image-xenomai-dele-x100-20220520a  Public     bin  libexec                           llcbench         perf-pc         test          ubuntu-kde-test.tar.gz
Documents  Music                              Templates  etc  linux-4.19-master-xenomai         llcbench.tar.gz  perf-test-data  test1         xenomai-v3.1.2
Downloads  Pictures                           Videos     lib  linux-4.19-master-xenomai.tar.gz  perf             share           test1.tar.gz  xenomai-v3.1.2.tar.bz2
user@localhost:~$ cd llcbench
user@localhost:~/llcbench$ ls
CHANGES  COPYING  Makefile  README  blasbench  cachebench  conf  doc  flushall.c  llcbench.h  misc  mpbench  results  sys.def  timer.c  user.def  www
user@localhost:~/llcbench$ ls
CHANGES  COPYING  Makefile  README  blasbench  cachebench  conf  doc  flushall.c  llcbench.h  misc  mpbench  results  sys.def  timer.c  user.def  www
user@localhost:~/llcbench$ make

Please use one of the following targets:

	alpha
	alpha-mpich
	linux-lam
	linux-mpich
	linux-opteron-mpich-acml
	ia64-mpich-ecc
	o2000
	pow2
	pow3
	ppc
	solaris
	solaris-mpich
	t3e
	reconfig (to bring this menu up again)

After configuration, please check the VBLASLIB variable in 
sys.def and make sure that it is pointing to the vendor BLAS
library if one exists.
user@localhost:~/llcbench$ make linux-lam
ln -s conf/sys.linux-lam sys.def
user@localhost:~/llcbench$ make
Please use one of the following targets:

For all three : compile, run, script, graph, clean, clobber, reconfig
For BlasBench : blas-bench, blas-run, blas-script, blas-graph
For CacheBench: cache-bench, cache-run, cache-script, cache-graph
For MPBench   : mp-bench, mp-run, mp-script, mp-graph

clean: removes object files and leaves result files
clobber: removes binary files and leaves result files
distclean: removes everything!
user@localhost:~/llcbench$ make cache-bench
cd cachebench; make 
make[1]: Entering directory '/home/user/llcbench/cachebench'
gcc -c -I.. ../flushall.c
gcc -O -Wall -c -I.. ../timer.c
gcc -O -Wall -DUSE_DOUBLE -I.. cachebench.c flushall.o timer.o -lrt -o cachebench
In file included from cachebench.c:10:
cachebench.c: In function ‘fake_out_optimizations’:
cachebench.c:296:12: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  296 |     assert(fd=open("/dev/null",O_WRONLY));
      |            ^~
cachebench.c: In function ‘do_memory_copy’:
cachebench.c:712:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  712 |   assert(y = (void *)malloc(memsize));
      |          ^
cachebench.c: In function ‘main’:
cachebench.c:947:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  947 |   assert(sizes = (long *)malloc(timeslots*sizeof(long)));
      |          ^~~~~
cachebench.c:949:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  949 |   assert(times = (double *)malloc(timeslots*repeat_count*sizeof(double)));
      |          ^~~~~
cachebench.c:951:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  951 |   assert(bws = (double *)malloc(timeslots*repeat_count*sizeof(double)));
      |          ^~~
cachebench.c:953:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  953 |   assert(percents = (double *)malloc(timeslots*repeat_count*sizeof(double)));
      |          ^~~~~~~~
cachebench.c:955:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  955 |   assert(x = (DATATYPE *)malloc((size_t)memsize));
      |          ^
make[1]: Leaving directory '/home/user/llcbench/cachebench'
user@localhost:~/llcbench$ ls
CHANGES  COPYING  Makefile  README  blasbench  cachebench  conf  doc  flushall.c  llcbench.h  misc  mpbench  results  sys.def  timer.c  user.def  www

cd cachebench; make 
make[1]: Entering directory '/home/user/llcbench/cachebench'
make[1]: 'cachebench' is up to date.
make[1]: Leaving directory '/home/user/llcbench/cachebench'
user@localhost:~/llcbench$ ls
CHANGES  COPYING  Makefile  README  blasbench  cachebench  conf  doc  flushall.c  llcbench.h  misc  mpbench  results  sys.def  timer.c  user.def  www
user@localhost:~/llcbench$ ls cachebench/
Makefile  cachebench  cachebench.c  cachegraph.gp  flushall.o  scripts  timer.o

user@localhost:~/llcbench$ cd cachebench/
user@localhost:~/llcbench/cachebench$ ./cachebench 

		Memory Set Library Cache Test

C Size		Nanosec		MB/sec		% Chnge
-------		-------		-------		-------
256             0.07            14006.49        1.00           
256             0.07            14007.11        1.00           
384             0.06            15007.76        0.93           
384             0.06            15007.85        1.00           
512             0.06            15563.79        0.96           
512             0.06            15563.29        1.00           
768             0.06            16162.41        0.96           
768             0.06            16162.38        1.00           
1024            0.06            16479.09        0.98           
1024            0.06            16479.26        1.00           
1536            0.06            16808.87        0.98           
1536            0.06            16792.13        1.00           
2048            0.06            16977.96        0.99 

参考：

使用llcbench测试缓存性能
https://blog.youkuaiyun.com/leishangwen/article/details/43339887

LLCbench - Low Level Architectural Characterization Benchmark Suite
https://icl.cs.utk.edu/llcbench/index.htm