Hallo,
ich hätte ein Frage bezüglich Jetstress Auswertung.
Ich habe auf einem Testsystem Jetstress laufen lassen um die Performance des Storage Systems zu testen.
Jedoch verstehe ich bestimmte Werte beim Ergebnis nicht.
Kann mir jemand die Begriffe "Thread count" und "43 sessions have actual 16709 IOPS..." erklären?
Bis 43 sessions sind die erreichten IO/s ganz gut, bei 138 dann wieder schlecht:
ZitatAlles anzeigen
2/9/2009 3:23:09 PM -- Volume F: has 0.0004 for Avg. Disk sec/Read.
2/9/2009 3:23:09 PM -- Operation mix: Sessions 26, Inserts 25%, Deletes 10%, Replaces 50%, Reads 15%, Lazy Commits 80%.
2/9/2009 3:23:39 PM -- Volume E: has 0.00006 for read latency slope.
2/9/2009 3:25:39 PM -- 12841 batch transactions/sec and 26 sessions have 16265 IOPS.
2/9/2009 3:25:39 PM -- 26 sessions have actual 16265 IOPS (target IOPS: 15506)
2/9/2009 3:25:39 PM -- Volume E: has 0.0023 for Avg. Disk sec/Read.
2/9/2009 3:25:39 PM -- Volume F: has 0.0013 for Avg. Disk sec/Write.
2/9/2009 3:25:39 PM -- Volume F: has 0.0005 for Avg. Disk sec/Read.
2/9/2009 3:25:39 PM -- Operation mix: Sessions 43, Inserts 25%, Deletes 10%, Replaces 50%, Reads 15%, Lazy Commits 80%.
2/9/2009 3:26:09 PM -- Volume E: has 0.00005 for read latency slope.
2/9/2009 3:28:09 PM -- 11822 batch transactions/sec and 43 sessions have 16709 IOPS.
2/9/2009 3:28:09 PM -- 43 sessions have actual 16709 IOPS (target IOPS: 18792)
2/9/2009 3:28:09 PM -- Volume E: has 0.0036 for Avg. Disk sec/Read.
2/9/2009 3:28:09 PM -- Volume F: has 0.0016 for Avg. Disk sec/Write.
2/9/2009 3:28:09 PM -- Volume F: has 0.0006 for Avg. Disk sec/Read.
2/9/2009 3:28:09 PM -- Operation mix: Sessions 150, Inserts 25%, Deletes 10%, Replaces 50%, Reads 15%, Lazy Commits 80%.
2/9/2009 3:28:39 PM -- Volume E: has 0.00002 for read latency slope.
2/9/2009 3:30:39 PM -- 2718 batch transactions/sec and 138 sessions have 4981 IOPS.
2/9/2009 3:30:39 PM -- 138 sessions have actual 4981 IOPS (target IOPS: 16975)
2/9/2009 3:30:39 PM -- Volume E: has 0.0018 for Avg. Disk sec/Read.
2/9/2009 3:30:39 PM -- Volume F: has 0.0008 for Avg. Disk sec/Write.
2/9/2009 3:30:39 PM -- Volume F: has 0.0001 for Avg. Disk sec/Read.
2/9/2009 3:30:39 PM -- Operation mix: Sessions 129, Inserts 25%, Deletes 10%, Replaces 50%, Reads 15%, Lazy Commits 80%.
Als "Achieved I/O per Second" werden im Ergebnis aber nur 1843.921 IO/s angegeben. Thread count 43 (per-storage group)
Ich kann mir das einfach nicht erklären. Kann jemand helfen?