I just (finally) got an apartment in SG, and ordered cable service from Starhub (just internet, nothing else). I started off with the 2Mb/s minimum plan (Surflite) to see what it's like.
The Motorola Surfboard modem you get defaults to 192.168.100.1 and has a basic diagnostic screen via http (annoyingly, the modem closes connections to http://192.168.100.1
when it's online, so you don't get the negotiated connection speed).
From me (218.186.12.33) to my colo(haller.ws), I get 219KB/s peak (155 KB/s sustained) when wget'ing from port 80, and 30 KB/s peak (28 KB/s sustained) when ssh'ing, so they're doing some traffic-shaping. port 8080, 443, 110, 143 are also slow-shaped. However, they seem to just track individual streams, so aggregating multiple tcp streams looks like a good workaround(~5 x 30 KB/s seems appropriate). After observing for a couple days, I see higher speeds for non-tcp-80 traffic after midnight, so starhub appears to bucket us slow people at some point (most likely their border) with either a total shared bandwidth meter, or a time-of-day meter.
As you can see below, they use RFC1918 space, which means that TCP MSS detection is probably going to fail so you'll always pay 40B/1500B in TCP overhead as you won't be able to send jumbo ethernet frames (maybe they fix this for people connected to their premium network, as they ship a different modem for that).
traceroute to raq1.haller.ws (66.150.227.79), 30 hops max, 40 byte packets 1 cm1.omega28.maxonline.com.sg (218.186.28.1) 10.544 ms 2 172.20.13.1 (172.20.13.1) 9.944 ms # rfc1918 implies TCP MSS clamping... 3 172.26.13.1 (172.26.13.1) 11.645 ms 4 172.20.7.26 (172.20.7.26) 26.167 ms 5 172.20.7.50 (172.20.7.50) 22.065 ms 6 203.117.34.105 (203.117.34.105) 11.492 ms # whois says these two belong to starhub 7 203.117.34.6 (203.117.34.6) 16.597 ms 8 cr1-paix-peer.pao002.internap.net (198.32.176.48) 198.072 ms # big jump across the pacific puddle 9 cr2.sje007.inappnet.cr1.pao002.internap.net (66.79.146.122) 305.303 ms # another big jump? wtf? 10 cr1-cr2.sje007.internap.net (66.79.146.189) 285.944 ms 11 nym009-sje007-1077-cr1.nym009.pnap.internap.net (66.79.146.117) 282.992 ms 12 nym008-nym009-82-core3.nym008.internap.net (66.79.152.130) 277.037 ms 13 border2.po1-20g-bbnet1.nym008.pnap.net (216.52.95.3) 277.928 ms 14 core5.ge2-8.phi-nym008.phi.pnap.net (216.52.93.94) 276.360 ms 15 border5.ge6-1-bbnet2.phi.pnap.net (216.52.64.80) 324.983 ms 16 * 17 vz41.tektonic.net (66.150.224.2) 307.014 ms 18 raq1.haller.ws (66.150.227.79) 294.649 ms