mercutio: (x)dcc is still used for file sharing and works great
hazardous: that's pretty nasty
but clever at the same time.. :)
when i go to the supermarket there is a savings card that remembers/tracks everything you buy
it's kind of handy as it'll tell you when things you frequently buy are on sale.
but some people really don't like that level of tracking.  at least it's obvious.
... except it isn't actually obvious?
it's obvious to me? :)
i suppose it isn't necessarily obvious to everyone
https://patchwork.ozlabs.org/patch/671069/ that is a serious patch, damn
seems short to me
it's a new congestion algoritham
oh serious as in great
not serious as in big
it requires fq
wow
i want to try it now
heh
did you try it static?
not yet
mercutio: well, yeah, it's probably obvious to anyone in here--but I think for most people, it's not obvious at all, and in particular what the total consequences are or could be, it's rather just seen as some nice gift of the supermarket
i played with heaps of congestion stuff years back
i found bic can sometimes be faster than cubic
and i found that the new initcwnd stuff from google really helped
but that 8 packets worked better than 10 sometimes
and that 12 worked better than 10 sometimes
10 was always an in between amount.  but i think they went too high seriously.
also i found that pacing packets doesn't help nearly as much as i thought it would.
in normal internet packets come in bursts, on/off.  but that means recovery works better too
but there's some empty space on the off
there's a sysetm to send less packets in the off time
which works better than trying to haev an average send speed.
also waking up to send packets frequently doesn't work well with regards to timers etc.. it puts cpu load up
atm linux has some serious issues with granuality with tc
and the shaping actually doesn't scale nearly as well as it should because of timer issues.
:o
you need really really tight timers to do shaping well
That's what she said!!
like more than 1000/sec
esp if you can't have more than 2 or 3 packets in flight at once
but 1000/sec with 3 packets in flight is what 3000 pps
so when you want 30k+ pps per queue you start seeing the granuality needs to go up
that BBR patch indeed looks nice
hmm that's using estimated bandwidth
that doesn't work on lots of current networks :(
becuase of issues like that shaping/pacing issue
people will have gigabit connects rate limited to 200 megabit
so traffic estimates can get confused
cos rate limit is like "go over threshold, packets dropped"
end site queueing is where the most dramatic improvements can happen atm i reckon
i have dsl anyway, traffic estimating should work ok :)
i wonder how big of a problem asymmetric end-user connections are
not at all
unless one side is too small
lack of decent aqm/queues are a way bigger problem
like if your connection receives 30 packets back to back will all 30 get through
and what will happen to latency
with google's 10 packet initcwnd thing being common now that's just 3 web responses simultaneously
before even increasing window size
14600 bytes *  3
43.8K, then acceptable latency spike
say you want 5 msec
you'd have to have 200*43.8k/sec throughput
which means 8760k/sec, so about 80 megabit
so as soon as you have 8 megabit connectoin
latency spikes to 50msec...
which is definitely too high to my midn.  so 10 packet initcwnd is too high for 8 megabit
but aqm/shaping at the end point can help
like fq_codel, which that algoritham relies on heh
but want fq_codel at end point too
hm what is Mikrotik RouterOS using my default
wifi is actuall even worse
never looked into it
hardware queues
you need it before it hits you though
but for outbound you can set sfq
i don't think they have fq_codel yet
i don't actually have any outbound aqm atm
only inbound
i don't really do that much uploading, and can do a bit over 30 megabit up now
on 1 megabit you really need aqm though
only-hardware-queue leaves interface with only hw transmit descriptor ring buffer which acts as a queue in itself. Usually at least 100 packets can be queued for transmit in transmit descriptor ring buffer. Transmit descriptor ring buffer size and the amount of packets that can be queued in it varies for different types of ethernet MACs.
what connection type do you have static
think i'm going to test this
mercutio: DOCSIS3 cable
250/10
yeh you mostly haev to care up probabluy
indeed
you can do a 10 megabit queue on your outbound with burst
then put sfq on top of it
it's probably slightly over 10 megabit
so 10 megabit should work ok
fq_codel would be nicer though
Hunk #1 FAILED at 124.
nearly applied cleanly
actaually i think that's fine, it's only diag stuff
i wish vultr had serial console :)
a working console would be a good start
heh
hard reboot fixed it...
damn vultr sucks :)
then kernel.org mirror is down
there's also a new updated vegas algorirtham now
hmm need linux/win_minmax.h
oh
i think we need all 14 of those patches
hmm 16.  does anyone konw an easy way to patch all 16?
manually clickign seemed to be the easiest  as i couldn't find mbox of month
# cat /proc/sys/net/ipv4/tcp_available_congestion_control
cubic reno bbr cdg nv
hmm it's slower than cubic for peak performance, and faster than cubic for minimum performance
and on large file much more consistent, and 23 seconds vs 26 seconds
how are you testing?
with curl
from vultr sydney
to dsl end point
i wanted something closeish, but not too close
i'm getting a 200mb file
i was doing 10mb at first though
the smoothness is way better with bbr
like while watching the curl current speed
where cubic is going up and down like a yoyo
so it's 8688k/sec with bbr, and 7855k/sec with cubic
that's basically 10% faster.  this is with 85 megabit sync rate on vdsl
i should test from further away too
19.2/18.9 to sj
16.0/15.8 to arp
so yeah it looks like it should in general give some bandwidth increase
even if only a couple of megabit
is this some low level tcp/ip enhancement
it's a new congestion control algoritham
thought we only needed those when using legacy network gear like frame relay
this will make the internet go faster in general
s/algoritham/algorithm
<mercutio> it's a new congestion control algorithm
but it's really wifi/3g/4g etc that are the problem areas atm
faster is better
as latency and bandwidth can vary dramatically over time
is it Linux only at the moment?
yeah
it's not even in linux main
it's a series of 16 patches to apply
Windows can implement it when it gets popular?
you can try my kernel if you have linux :)
i'm using 4.8-rc6
as it seemed best to use current with it
windows doesn't really matter
it's about the tcp sender
and windows shouldn't be on servers. :)
I am on Linux ixp 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
https://weallsee.net/vmlinuz-4.8-rc6
it should have all the important things not in modules :)
and only suitable for virtual machines
ofcourse I should test before applying that
ie it doesn't have heaps of hardware support for weird stuff
to see if it improves
nah
you can change real time
echo bbr > /proc/sys/net/ipv4/tcp_congestion_control
change kernel withough reboot?
and echo cubic ..
yeah
oh
nah you can change congestion algoritham
ahh that makes more sense
i just have alternate kernel, you could compile yourself if you want
i can tar up the patches
as long as it works with ubuntu I dont mind trying your kernel
cool
yeah i'm using it with ubuntu
just stick it in /boot
and run update-grub
how do I set the default kernel
or will it do that automatically
update-grub will set the highest number first
you'll see it when it runs update-grub
Found linux image: /boot/vmlinuz-4.8-rc6
Found linux image: /boot/vmlinuz-4.4.0-9136-generic
rebooting now
like mine is like that
did it come up fine?
dont think so
I cant ping it
oh, weird
vnc it?
yea
console is black
oh hmm
i think console is normalyl black actually
enter doesnt seem to change it
not accepting keyboard input
serial it? :)
doesnt the OS have to have something configured for that to work
never used serial console before
ahh
yeh console=ttyS..
console=ttyS0, etc
i wonder why it doesn't show anything on console
and why network isn't working
what file system are you using?
booting again
kernel panic
not syncing
remove quiet and splash?
that could be fs loading issue
unable to mount root fs on unknown block
oh i think i know the issue
hangon
it's the scsi modules
I should boot into old kernel?
hmm
if you want
it has virtio-scsi
gah
does it say partition talbe
I mean to load a new patched kernel you provide :-)
like sda1, sda2 etc
well i'm not sure why it's not working atm
can you show me screenshot?
Device     Boot  Start      End  Sectors  Size Id Type
i mean when linux boots is it seeing that
https://gist.github.com/mnathani/01a7492abc39781e5faa1fd63241d51e
I switched back to the original kernel
oh you're using lvm
i wonder if i'm missing lvm support
ok compiling again
hmm
i wonder if cloudflare will cache
you could name it something different
i disabled caching on cloudflare temp
development mode
it's nearly finished compiling..
have you heard of bonded internet: http://itel.com/services/bonded-internet/
ok
new version is there
md5 is a39815975d919495da9362a2173e7add
same filename?
nah hadn't heard of it
we're getting gigabit internet in this country anyway.
there is a video as well
https://www.youtube.com/watch?v=tqbnjgbtDl0
YouTube video: "Double or Triple Your Internet Speed - This Method Actually Works!" by LinusTechTips
it's kind of crazy considering we were far behind
says you get things like static IP
and unrestricted ports etc
using residential links and their service
looked pretty cool to me
mptcp is interesting from the pov of things like 4g and home internet
and going from one to the other
same thing
http://imgur.com/a/bMpgo
was the md5ok?
yea
only compared the last 4 characters
yeah i understand
That's what she said!!
shoudl be fine :)
it really doesn't show much on that screen
i wonder if you could show what it shows on serial and set serial?
is the lvm encryped?
can I pass a parameter from grup
encrypted?
dont think so
yeah
console=ttyS0,115200
on which line
I have setparams ...
That's what she said!!
BryceBot: no
Oh, okay... I'm sorry. 'I have setparams ...'
did you login to serial console?
there is a linux line
I am on web vnc
grub bootloader
you have to login to serial console for serial console capturing :)
like ssh to console.cust.arpnetworks.com
where I can edit boot options
otherwise won't be able to see it
ok
but doesnt the ubuntu have to have that command as well?
what do you mean?
you setill have to set in grub..
but you have to already be on serial console
otherwise you miss
grub permanent
there's no storing of previous serial console output
or grub one time while booting
once you are logged onto serial console and see the boot coming up etc
you can then set console=ttyS0,115200 as advanced option to grub
err to linux
you can also update your grub config to always do both
GRUB_CMDLINE_LINUX="console=ttyS0,115200n8 console=tty0"
http://www.extremetech.com/computing/234881-from-this-point-forward-all-intel-and-amd-cpus-are-windows-10-only
sounds a bit odd, CPUs not supporting older operating systems
The phrasing seems weird. It seems more like MS is not supporting new processors on the older OSes?
Seriously guys, are we not doing phrasing anymore?
OK, it's just the headline that is oddly phrased.
wasn't that going around ages ago
It's over two weeks old.
even longer than that i was thinking
jan 16th i found osmething
If that's ancient, I'd hate to know what you think of software that was written before then!
well 8 months is quite a while
http://www.theverge.com/2016/1/16/10780876/microsoft-windows-support-policy-new-processors-skylake
The Verge: "Microsoft says new processors will only work with Windows 10"
That headline is also oddly phrased!
heh
trying out this new bbr algoritham, reminds me again of how far behind openbsd is
More details about BBR will be published in the ACM Queue, Vol. 14 No. 5, September-October 2016, under an article titled "BBR: Congestion-Based Congestion Control."
i wonder if that's free
Access not allowed, your library account has expired
:-)
my University access would have had it
hmm
i don't think it's actually out yet
http://queue.acm.org/issuedetail.cfm?issue=2984629
ahh it does cost
how do you find performance compares mnathani ?
https://www.kiwicon.org/blue
kind of eerie