[HADOOP-2768] DFSIO write performance benchmark shows a regression

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Fix Version/s: 0.16.0
• Assignee: Dhruba Borthakur
• Reporter: Mukund Madhugiri
• Created: 01/Feb/08 18:59
• Updated: 08/Jul/09 16:42
• Resolved: 04/Feb/08 18:00

Description

We are seeing a performance regression in DFSIO write benchmark, possibly due to Hadoop-1707.

Here is the data:

• Aggregate cluster throughput went from 0.30G to 0.14G with 39 concurrent clients, on 20 nodes
• Aggregate cluster throughput went from 1.15G to 0.85G with 39 concurrent clients, on 100 nodes