Hi,
Here are the results of comparison of kernel 2.5.51 and 2.5.52 on TIObench.
key findings.
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test 2.5.52 (as compared to
2.5.51) APPRXIMATE % change
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rate (megabytes per second) 5% decrease
CPU % utilization 5% decrease
Average Latency less than 2% increase
Maximum latency 15 % increase
CPU efficiency less than 2% increase
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Linux kernel 2.5.52
TIO bench results
Date 16th december 2002
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Unit information
================
File size = megabytes
Blk Size = bytes
Rate = megabytes per second
CPU% = percentage of CPU used during the test
Latency = milliseconds
Lat% = percent of requests that took longer than X seconds
CPU Eff = Rate divided by CPU% - throughput per cpu load
Sequential Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.5.52 252 4096 10 8.48 5.251% 12.152 1825.07 0.00000 0.00000 161
Random Reads
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.5.52 252 4096 10 0.50 0.729% 211.130 1079.20 0.00000 0.00000 69
Sequential Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.5.52 252 4096 10 16.17 30.00% 4.525 29226.70 0.06094 0.00625 54
Random Writes
File Blk Num Avg Maximum Lat% Lat% CPU
Identifier Size Size Thr Rate (CPU%) Latency Latency >2s >10s Eff
---------------------------- ------ ----- --- ------ ------ --------- ----------- -------- -------- -----
2.5.52 252 4096 10 0.78 1.084% 0.675 992.39 0.00000 0.00000 72
regards,
Aniruddha Marathe
WIPRO Technologies, India
[email protected]