It comes with a standalone tool, so I did a quick comparison with some other well-known SRCs (sndfile-resample = 0.1.7-3ubuntu1; others converters compiled from latest source).
Execution time and comparative execution time percentage shown for a couple of common SRC ratios, and a couple of conversion qualities:
High-ish quality:
44100 -> 96000 sox rate 6.21s 100.0%
44100 -> 96000 ssrc 20.58s 331.4%
44100 -> 96000 fsrctool -q mq20 27.74s 446.7%
44100 -> 96000 sndfile-resample -c 1 40.17s 646.9%
96000 -> 44100 sox rate 5.28s 100.0%
96000 -> 44100 ssrc 19.98s 378.4%
96000 -> 44100 fsrctool -q mq20 28.88s 547.0%
96000 -> 44100 sndfile-resample -c 1 34.54s 654.2%
Best-ish quality:
44100 -> 96000 sox rate -vs 7.01s 100.0%
44100 -> 96000 ssrc_hp 32.86s 468.8%
44100 -> 96000 fsrctool -q hq24 24.19s 345.1%
44100 -> 96000 sndfile-resample -c 0 369.50s 5271.0%
96000 -> 44100 sox rate -vs 5.91s 100.0%
96000 -> 44100 ssrc_hp 32.31s 546.7%
96000 -> 44100 fsrctool -q hq24 22.58s 382.1%
96000 -> 44100 sndfile-resample -c 0 359.16s 6077.2%