CPU affinity

Soft CPU affinity
Processes do not frequently migrate between processors.
Hard CPU affinity
Processes run on processors you specify.

The Linux kernel API:

To alter the bitmask
   sched_set_affinity()

To view the current bitmask
   sched_get_affinity()

Memory Benchmark Test

Memory Performance

stream

STREAM

void
STREAM_Copy (double *source, double *destination, int size) {
   int j;
   size=size/8;
   for (j=0; j < size; j++)
      source[j] = destination[j];
}

Byte Copy

void
byte_copy (char *source, char *destination, int size) {
   int j;
   for (j=0; j < size; j++)
      source[j] = destination[j];
}

mem_bench



Bandwidth (x86) (0.15, 32bits) (0.16, 64bits)

CPU Benchmark Test

CPU Core

nbench

Floating-Point

fp_bench

CPU Utilization

sysstat

Storage Performance Test

Disk I/O Performance

CrystalDiskMark (2.2)

datamark (0.0.4)

dd (coreutils)

[ ]# dd if=/dev/hda1 of=/dev/hdb1 bs=4k conv=noerror,sync

dd_rescue

[ ]# dd_rescue /dev/zero /media/disk/zero2G -m 2G

File System Performance

IOzone 3

x86 version (bin) (src)
ARM version (bin) (src)

Iometer

Bonnie++

Misc:
sar - system activity report
   Example: http://www.thegeekstuff.com/2011/03/sar-examples/
iperf - perform network throughput tests
hdparm - to test local disk performance of any bricks
dbench - Measure disk throughput for simulated netbench run
iozone - Filesystem Benchmark
htop - interactive process viewer
vnstat - a console-based network traffic monitor
iftop - display bandwidth usage on an interface by host