Test of TDMS write performance

All test are executed with the LV2016 project “TDMS-Perf-Test” from the GitLab repo https://code.hampel-soft.com/hse-labs/proofs-of-concepts.

Windows

Tested in a Win 7 VM (2 cores, 6GB RAM, SSD) on a Dell XPS13 notebook.

Conditions: TDMS Write data layout: decimated, TDMS Flush after every write. Runtime 2 minutes.

Block size	Block rate (ms)	# Channels	kBytes per block	Ø Write time (s)	Ø Write rate (kB/s)	File size (kB)	Index size (kB)
100	100	16	12,50	0,043	109	7.491	4
250	250	16	31,25	0,047	740	7.488	4
500	500	16	62,50	0,046	1.534	7.504	4
1000	1000	16	125,0	0,053	2.636	7.504	4

Tested with a cRIO 9030 (firmware version 4.0).

Conditions: TDMS Write data layout: decimated. Runtime 2 minutes.

Block size	Block rate (ms)	# Channels	kBytes per block	Ø Write time (s)	Ø Write rate (kB/s)	File size (kB)	Index size (kB)
100	100	16	12,50	0,002	6.059	7.404	4
250	250	16	31,25	0,002	14.314	7.457	4
500	500	16	62,50	0,002	26.886	7.473	4
1000	1000	16	125,0	0,003	49.591	7.504	4

Conditions: TDMS Write data layout: decimated, TDMS Flush after every write. Runtime 2 minutes.

Block size	Block rate (ms)	# Channels	kBytes per block	Ø Write time (s)	Ø Write rate (kB/s)	File size (kB)	Index size (kB)
100	100	16	12,50	0,015	946	7.404	4
250	250	16	31,25	0,018	2.179	7.457	4
500	500	16	62,50	0,017	4.143	7.473	4
1000	1000	16	125,0	0,019	7.614	7.566	4

Conditions: TDMS Write data layout: decimated. Runtime 2 minutes.

Block size	Block rate (ms)	# Channels	kBytes per block	Ø Write time (s)	Ø Write rate (kB/s)	File size (kB)	Index size (kB)
100	25	24	18,75	0,003	6.523	41.556	6
250	25	24	46,875	0,003	15.927	103.646	6
500	25	24	93,75	0,003	30.003	206.393	4
1000	25	24	187,5	0,005	55.502	407.912	4