[BENCHMARK] TIObench performance of mm2 patch. Latencies come down.

Aniruddha M Marathe (aniruddha.marathe@wipro.com)
Thu, 19 Dec 2002 13:54:33 +0530


Hi,
Here are the results of comparison of kernel 2.5.52 with mm2 and 2.5.52 with mm1.
on TIObench. key findings are listed in the table. Values in the table indicate approximate percentage change with respect to previous result.

* Maximum latency has come down for this patch. This was on rise from last 5.52 release.

-------------------------------------------------------------
test 2.5.52-mm2 (as compared to
2.5.52 mm1) APPRXIMATE % change
-------------------------------------------------------------
rate (megabytes per second) 5% increase
CPU % utilization lessthan 2% increase
Average Latency 10% decrease
Maximum latency 10 % decrease
CPU efficiency less than 5% increase
-------------------------------------------------------------

Here are the complete results.

No size specified, using 252 MB

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 9.08 5.545% 11.806 1837.19 0.00000 0.00000 164

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 0.48 0.770% 215.442 1346.07 0.00000 0.00000 62

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 17.59 32.71% 3.810 23958.10 0.05625 0.00156 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 0.77 1.067% 0.710 1113.98 0.00000 0.00000 72

Regards,
Aniruddha Marathe
WIPRO Technologies, India
aniruddha.marathe@wipro.com
+91-80-5502001 extn 5092
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/