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robonerd is now known as rnerd toddf: ok I would never have expected this brycec: ? toddf: I moved a perl bot I am writing that connects to btc-e.com to an arpnetworks vps
from my laptop here at home
instantly it is faster and reacts so quickly it makes me $2.33 USD equivalent in btc on the spot brycec: lol nice toddf: thats just the test account, time to move the big account m0unds: hahaha, nice brycec: Soon toddf's VPS will pay for itself toddf: since 12/10 I'm only $3.31 shy of being able to pay my next months bill .. before I move it to arpnetworks, so .. it seems realistic
(my bill is $65/mo fwiw) rnerd: toddf well i helped start the #coindev "virtual currency" software / service dev community, and we host with arp
you're both welcome to join our channel, and at the right place! :)
toddf which OS? toddf: openbsd of course rnerd: ah, fbsd here -: rnerd looks over at toddf, and gives him a nod ***: heavysixer has joined #arpnetworks
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heavysixer has quit IRC (Quit: heavysixer) mnathani: Anyone familiar with how squid operates?
#squid seems quiet right now. I am getting no HITTs in my access log: only TCP_MISS/200
Its set up as a reverse proxy
requests are going through, but not being cached I dont think ***: rnerd is now known as robonerd brycec: A reverse proxy? Any reason not to use nginx/lighttpd/etc?
(varnish..) robonerd: brycec is squid truly irrelevant largely, now?
if so, an era has passed -: robonerd takes a moment of silence brycec: I'd say it's overblown and overcomplicated for most reverse proxying
forward proxying it's still peachy
But Varnish is defintely the defacto caching reverse proxy robonerd: nice ***: heavysixer has joined #arpnetworks
ChanServ sets mode: +o heavysixer mnathani: brycec: can varnish be setup on say a front end web host with a separate apache server as the backend on a defferent box? brycec: mnathani: Yes
That's what Wikipedia does, for instance staticsafe: Varnish is awesome brycec: Full disclaimer I've never used Varnish. Looked at it, but purely out of curiosity. staticsafe: i wish I had the need for it though brycec: ditty
*ditto robonerd: url to varnish? up_the_irons: toddf: whoa that's awesome mnathani: https://www.varnish-cache.org/ robonerd: up_the_irons :)
mnathani ty
yea varnish looks useful
pure C or? ***: heavysixer has quit IRC (Quit: heavysixer) mnathani: I just switched to varnish, but my pages are still not being cached. :-( m0unds: boo brycec: I'd say it's time to check that the backend servers aren't sending do-not-cache headers
(tcpdump)
And of course check that varnish is configured correctly :p
Relevant https://www.varnish-cache.org/content/why-isnt-varnish-caching-requests-seem-pass-straight-through mnathani: Thanks brycec: Apparently Cookies?
mnathani: easy test on the cookies: cURL
I swear curl is 90% of my web server debugging toolkit staticsafe: curl ftw brycec: libcurl too, if you're writing programs robonerd: how does libcurl help?
er, curl/libcurl brycec: robonerd: rather than writing your own methods to open sockets etc, just use curl robonerd: can you get the raw binary somehow? brycec: robonerd: you mean the raw response from the server? yeah of course. robonerd: the ppl in #osdev were speaking in the same way about dropbear last night brycec: dropbear is an ssh server, not a client library robonerd: well yea m0unds: isn't dropbear gone?
i thought i'd heard it was KAPUT staticsafe: no mercutio: i prefer trafficserver to squid or varnish
m0unds: i hope not!
i like for multiple implementations of important projects to stick around m0unds: i could have sworn it was dropbear that died
saw that it didn't, now i'm wondering what did die and i confused it with dropbear mercutio: dropbear used to have vulnerabilities
and people didn't upgrade versions
and then some people did but didn't upgrade the version number m0unds: was there a period where it wasn't maintained well?
or partially abandoned or anything like that? mercutio: really ssh servers shouldn't say the version number clearly.
no idea
i use dropbear as a client these days
it works on old hp servers (ilo2) where openssh doesn't
it connects faster over high latency links m0unds: ah mercutio: and it even connects faster over low latency links m0unds: ever tried mosh? mercutio: but it doesn't aggregate text as much
so it can be a little slower for some things, and show more constant information
like typing dmesg
in real access, latency seems better if anything
and it's pretty fast
and it's hundreds of msec faster if dropbear on both sides going international
dbclient -l root arp.meh.net.nz pwd 0.00s user 0.00s system 0% cpu 1.963 total
ssh -l root arp.meh.net.nz pwd 0.01s user 0.00s system 0% cpu 2.201 total
that's to openbsd openssh
which is 170msec away
weird ping is usually less than that
it's 1.45 seconds to a linux host at arp
with dropbear server
i still kind of wish the handshaking was quicker
oh mosh was hell slow for me
it was laggy with 10 msec ping
but one of the ends was using atom at the time
and it's very cpu hungry it seems
i thought mosh was a novel idea, but i don't like using hugely inefficient software m0unds: i typically only use it on my laptop because connectivity is so variable it saves me from having to reconnect regularly
never really noticed significant cpu utilization at either end mercutio: ahh
well atoms are pretty slow m0unds: yea
macbook is an i7 mercutio: it couldn't do samba at gigabit speeds m0unds: server i was working with was a dual xeon
ahh, bummer mercutio: xeon doesn't mean much :)
it's like saying a gas car :) -: m0unds is too lazy to go look mercutio: anyway, mosh still uses ssh to connect m0unds: mid 2012
whatever mercutio: so recent m0unds: 192gb ram
etc mercutio: yeah
probably a e5 of sorts
e5-2690 or something maybe m0unds: wouldn't have dismissed cpu perf of a 10 year old xeon or something as being a reason for low cpu utilization...
herp derp mercutio: oh right
the old pentium4 type xeons were hell slow
err 5000 series m0unds: yep, netburst is a joke
bad arch mercutio: well about as bad as atom m0unds: good at warming up a room though mercutio: not really ***: r0ni has joined #arpnetworks mercutio: maybe a small room m0unds: 3.2GHz prescott was like a 130W cpu mercutio: tdp m0unds: or something absurd ***: r0ni has quit IRC (Client Quit) mercutio: they still don't use that much power normally
power supplies have got more efficient since then
and there's been some better idle, gating etc support
and cpus run closer to 0% load now
but in reasonable to high usage there's not much diff between old and newer cpus really
like 5000 series to 5400 series isn't huge jump
5400 to 5500 is a bit
5500 to 5600 is tiny i think
then a bit of a jump again from 5600 to whatever the next series was
is that e3 next?
it is isn't it
e3/35
e3/e5
and the affordable e5s aren't much faster than i5-2600s
err i7-2600
and power/efficiency/performance has hardly changed since then again
apparently ivy bridge cpus are more efficient than haswell at load
i suppose amd kind of fell off the train, so intel doesn't have aynone to compete with except arm type things that are coming up m0unds: amd still does well in hpc mercutio: with video cards? m0unds: mostly because of thread count
haven't seen a lot of amd powered gpu compute
nvidia seems to own that space mercutio: you mean stuff that powerpc is winning in power/performance?
that's curious
consdiering that amd is much better than nvidia at bitcoin
i assumed that amd was better in general with opencl type things m0unds: yea, i think part of it is opencl vs cuda
cuda being more ubiquitous
which is silly mercutio: i haven't touched either
it sounded like a nice idea
i've been playing with ssd raid
adn reading up about stuff m0unds: i think cuda's been around longer, sorta like physx or whatever in teh gaming world mercutio: it seeems intel motherboards can't do more than about 1500mb/sec on onboard sata m0unds: so adoption is higher mercutio: cos they have a 2GB/sec link for pci-e m0unds: intel mobo w/the SATA controller attached at the southbridge or a separate controller like marvell or whatever it was they used? mercutio: x4 i suppose
intel onboard direct
i get about 1400mb/sec with x4 pci-e x2
err pci-e 2
i think slightly over 1400mb/sec
so i suppose it basically it is x4 limitations
at x8 i was getting faster speeds
but at those speeds it doesn't amtter too much
but i think i/o bus speeds for non video is likely to be the next significant improvement
video cards are iommu now
err can do iommu
it may not be that far away that there are dual cpus on small computers
with a lower power fanless cpu and a full cpu m0unds: that's something AMD's working on, actually
arm + x86 mercutio: oh, interesting
arm already do that kind of thing m0unds: http://www.amd.com/us/aboutamd/newsroom/Pages/presspage2012Oct29.aspx
first step is servers mercutio: that's damn cool.
time xterm -e pwd" isn't much faster than it was on a p120. m0unds: that + APU stuff (xbox, ps4, low-end laptops) are where they're really kinda pushing stuff a bit mercutio: there's lots of inbuilt latency etc limitations
and downclocking big cpus is probably not going to keep latency low
i haven't really considered amd seriously for years
last i knew their memory performance and single threaded performance was way down m0unds: yep
multithreaded performance is stellar mercutio: and most things don't scale to multicore m0unds: yep mercutio: which is what i wondered about back with pentium pros
not much scales on linux yet
lbzip2 is damn cool.
compiling scales well
but i think we're really close to needing things like multithreaded file copying
like if you copy 100,000 files
it shouldn't iterate through the files one by one
but on single hard-disks they don't really cope with multiple transactions at once well
but ssd's and raid arrays should be ok m0unds: having lots of threads for encoding (single encode process per core) is nice mercutio: so that's my personal thing i wnat to look at soon
for multiple files? m0unds: yep mercutio: yeah multipel files is easy
i don't do any encoding myself
i don't even do mp3 encoding from cd's m0unds: i do some audio work for friends, occasionally do video mercutio: but cpus are fast enough now that single cpu'ing that is still going to keep up with the cd m0unds: yea mercutio: i ripped heaps of music years back m0unds: 17 seconds to encode a 70 minute album from wav -> flac or wav, flac or whatever -> other format
it's pretty hilarious mercutio: heh m0unds: doing 8 tracks at once mercutio: it used to use up 50% cpu to play a mp3
and i had to fuck around with nice lervels and shit
to make sure it didn't skip m0unds: i couldn't play mp3s on the machine i had til i was in HS
cpu was too slow, 486DX-33
haha mercutio: haha
i went 486dlc40 to p75 i think
err
it was 486dlc40 to some amd thingy
like a fast 486
with a weird name
then to a p120 m0unds: i went 486dx-33 4MB RAM -> 20MB RAM -> 300MHz AMD K6-2 mercutio: i overclocked the p120 to 133 mhz and removed the fan
so much headroom in those days
4mb ram gotta suck m0unds: it was cutting edge in 1993
double speed cdrom too mercutio: heh
shit 91
mp3s were around in 91?
oh you said 93
how did i read it as 91 m0unds: yeah, i had that machine til 1999
hahaha mercutio: heh
i got amd k6-2 sometime too
with 128mb of ram m0unds: cdrom interface was via the isa soundcard mercutio: i had 24mb before that
and couldn't run X m0unds: i didn't have enough vram in the 486 to run x at higher than 640x480 mercutio: heh
did you overclock isa bus? m0unds: nah mercutio: i didn't have enough memory
i think i had s3 virge
i just used svgatext mode m0unds: my 486 was 1MB cirrus logic or something
i could get 800x600 in wfw 3.11 mercutio: and had like 100 columns or so
heh
i dunno how much memory i had
probably 2mb?
i think it was s3 trio64 m0unds: i have a pci version of one of those somewhere
s3 trio or verge maybe mercutio: lots of people had vergs
trios were cheaper
i went to radeon 9000
which could do 1920x1440?
but on crt that flickered heaps
i usually just used 1280x1024 m0unds: yeah, probably low refresh or whatever
yeah, same mercutio: and then got annoyed with the lack of space sometimes and jumped up to 1600x1200
yeah 1280x1024 was 85 hertz
and 1920x1440 was like 60 hertz
1600x1200 75 hertz or something
19" crt
but when youwent up resolution things got less crisp
but yeah everything uses up so much memory niow
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
17037 root 20 0 333392 100136 80780 S 2.7 1.2 0:09.62 Xorg
i have 5 xterms open, and pidgin
but i was surprised how well linux seems to deal with 8gb of ram
compared to windopws
sometime memopry volumes went up enough that it doesn't really matter now m0unds: i've got 2GB free in win7 right now on this particular workstation mercutio: on 8gb ram? m0unds: yep mercutio: i have 5 gb free on 16gb right now
on the windows box
but i'm running chrome m0unds: probably superfetch caching stuff mercutio: and skype and putty
i disabled that stuff m0unds: why? mercutio: cos samsung told me to m0unds: lol mercutio: samsung magician software suggests you disable it m0unds: hahah
my corsair SSD has 3 years of use and still indicates 100% wear level with like 8TB of writes mercutio: i dunno i had 8gb for a while in it
cos i was curious how it'd go
(i default to thinking 16gb makse sense thse days) m0unds: i wonder if it's a write-saving measure for samsung
yea, my home ws is 16gb
this one's at my office mercutio: and i noticed the upgrade to 16
it's cos i junmped from 6 to 16 and thought 8 may have been enough
but i'm in similar situation with my linux bvox too
i have ram lying around
i could upgrade to 16gb or 24gb on server
but it's on 8gb
and i run chrome on it too
and it deals much better on 8gb
and i dual boot the windows box with linux too
and i notice no diff between 8/16
my original justification was for virtualisation though
and i was doing linux and windows on the same box for a bit
and upgrading from 16 to 24gb helped m0unds: samsung suggests disabling superfetch w/ssds as a memory saving measure mercutio: oh interesting m0unds: i was curious why they'd suggest it - iguess it makes sense in lower memory ssd envs like laptops or whatever mercutio: so i should reenable it m0unds: like if you've got a notebook with 4gb of ram, it might make a diff mercutio: the biggest difference i find with more ram is uncompressing large files yhou've juist copied on m0unds: but even then, i dunno mercutio: like say you have a 4gb archive
that you just copy on
it's nice if that 4gb stays in memory
but generally speaking it's still going to be slow ***: CaZe has quit IRC (Ping timeout: 246 seconds)
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