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--- aix:perf_tools [2023/07/28 00:43]
manu [PerfPMR]
+++ aix:perf_tools [2024/02/08 21:51] (current)
manu
@@ Line 1: / Line 1: @@
 ===== Performance Tools =====
+https://www.ibm.com/support/pages/node/7111774?myns=swgother&mynp=OCSWG10&mync=E&cm_sp=swgother-_-OCSWG10-_-E
 ==== Standard AIX tools ====
@@ Line 127: / Line 129: @@
 Nstress tools have multiple binaries to test performances : ncpu, ndisk64, nmem64, nlog, nfile, nram...
+==== Ndisk ====
 __Example, test disks__
-  # dd if=/dev/zero of=bigfile bs=1m count=1024
+<cli prompt='#'>
-Test in sequential mode, using 100% read and misc block size (4k, 8k, 64k, 1m) for 60 seconds
+[root@arwen]/root # dd if=/dev/random of=testfile01 bs=1G count=50
-  # ndisk64 -f bigfile -S -r100 -b 4096:8k:64k:1m -t 60
+</cli>
+Test in sequential mode, using 100% read and misc block size (4k, 8k, 64k, 1m) for 60 seconds, and 3 parallel streams
+<cli prompt='#'>
+[root@arwen]/root # ndisk64 -M 3 -f testfile01,testfile02,testfile03 -S -r100 -b 4096:8k:64k:1m -t 60
+</cli>
 Test in Random mode, using 75% read and 25% write and misc block size (4k, 8k, 64k, 1m) , flushing IO to disk
-  # ndisk64 -f bigfile -R -r75 -b 4096:8k:64k:1m -q
+<cli prompt='#'>
+[root@arwen]/root # ndisk64 -f bigfile -R -r75 -b 4096:8k:64k:1m -q
+</cli>
 ==== VDBench ====

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