What is the average I/O performance of SanDisk Cruzer Micro 8GB Flash Drive?

The average I/O performance of a flash drive can be measured by running SQLIO with multiple 64-KB blocks with a large stripe factor.

Here is the read performance test of SanDisk Cruzer Micro 8GB Flash Drive on 64-KB blocks.

C:\fyicenter\SQLIO>sqlio -LS -kR -b64 -i64 -f64 -t1 -s60 -p0 E:\test.dat

using system counter for latency timings, 2343896 counts per second
1 thread reading for 60 secs from file D:\test.dat
	using 64KB IOs over 2048KB stripes with 64 IOs per run
	affinity on cpu number 0
initialization done
CUMULATIVE DATA:
throughput metrics:
IOs/sec:   395.50
MBs/sec:    24.71
latency metrics:
Min_Latency(ms): 1
Avg_Latency(ms): 2
Max_Latency(ms): 33
histogram:
ms: 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24+
%:  0  0 99  1  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0

Here is the write performance test of SanDisk Cruzer Micro 8GB Flash Drive on 64-KB blocks.

C:\fyicenter\SQLIO>sqlio -LS -kW -b64 -i64 -f64 -t1 -s60 -p0 E:\test.dat

using system counter for latency timings, 2343896 counts per second
1 thread writing for 60 secs to file D:\test.dat
	using 64KB IOs over 2048KB stripes with 64 IOs per run
	affinity on cpu number 0
initialization done
interrupted by Ctrl-C - stopping I/Os now
CUMULATIVE DATA:
throughput metrics:
IOs/sec:     1.83
MBs/sec:     0.11
latency metrics:
Min_Latency(ms): 2
Avg_Latency(ms): 543
Max_Latency(ms): 1608
histogram:
ms: 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24+
%:  0  0  0  0  0  0  0 29  2  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 68

As you can see, in the simulation of multiple 64-KB file I/O, reading speed is 24.71 MBs/sec, and writing speed is 0.11 MBs/sec. Like most USB flash drive, reading is much faster than writing on SanDisk Cruzer Micro 8GB Flash Drive.

⇒ SanDisk Cruzer Micro Flash Drive - Maximum Reading Speed

⇐ SanDisk Cruzer Blade Flash Drive - Maximum Writing Speed

⇑ I/O Tests on Flash Drives

⇑⇑ SQLIO Disk I/O Benchmark Test Tutorials