Discussion Forums > Technology
Routers - which to pick
Pentium100:
--- Quote from: kitamesume on January 06, 2013, 03:13:06 PM ---RT-N12 rev.C1 has 32MB of ram, which i think can handle up to 32K of connections, i won't risk it though.
--- End quote ---
A conntrack entry takes up about 310B, so 32K entries would take up about 9.5MB, though the RAM is also used for other stuff, not just conntrack.
--- Quote ---2Hrs timeout sounds fine, although would this work instead? both are set to 300seconds at the moment, i'm waiting for some dropout connection first and if the 16K connection upperlimit still has enough space to spare.
--- End quote ---
5 minutes may be a bit too short for TCP, for example if you use telnet or ssh.
kitamesume:
--- Quote ---Total Available - 80%
26160 kB / 32768 kB
Free - 45%
11888 kB / 26160 kB
Used - 55%
14272 kB / 26160 kB
Buffers - 9%
1344 kB / 14272 kB
Cached - 27%
3916 kB / 14272 kB
Active - 6%
915 kB / 14272 kB
Inactive - 5%
670 kB / 14272 kB
--- End quote ---
this is the level of ram on my router @ 901connections, assuming that the free ram of 11,888kB is correct, i can hold as many as 32K connections.
i use neither, although i'll push it to 24hrs on both TCP and UDP and set connections to 32K for now, see if it crashes or anything.
edit: ok, it crashed at about 3hrs after setting it as such, i dunno at what connection count it did but i'm at 90% at 5,500~ connections.
i'm gonna try [ 24hrs TCP | 3hrs UDP | 12,288 connections ] this time.
edit2:
--- Quote ---i'm gonna try [ 24hrs TCP | 3hrs UDP | 12,288 connections ] this time.
--- End quote ---
6hrs and no crashes so far, seems like its a good setup, although hovering at 96% ram usage with only 8K connections is kind of making me worry.
also, does changing the congestion control to anything else help improve internet consistency? i've set it to HTCP currently and its been good so far as well.
to note though my internet is quite leaky, dropping packets and such.
edit3: i'm gonna try out westwood TCP, it favors good consistency and efficiency on leaky pipelines, might be a good decision. tried HTCP | Vegas | cubic | westwood - vegas gave the most consistent connection...
Pentium100:
3 hours for UDP is way too long - set it to 5 minutes or so, even the default isn't that big.
kitamesume:
i'm fiddling with it, most likely i'll set it to 30mins later on.
i'm fine-tuning the settings first, taking off all the unnecessary services to reduce overall ram/cpu usage =P
i'll need to set a few static IPs too since a few of my PCs hosts game servers (minecraft, etc.)
edit: speaking of improvements, OMG i can load <2MB images almost instantly! mangas <33
looks like either the TCP congestion control or QoS is working, Utorrent and the other apps aren't interfering with my browsing at all.
CappinHoff:
DD-WRT doesn't make the router a beast, it more or less adds more router control options. It does not increase performance. Though it does make the gui for the router better and more user friendly. I suppose that makes it run better(in theory).
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