How load averages and cpu usage depends a lot from the kernel. I believe
individual process usage more than core load or load averages.
For example, if you look with "top" program, you might see something
like this:
load average: 0.34, 0.42, 0.23
Cpu0 : 29.0%us, 0.5%sy, 0.0%ni, 66.8%id, 0.5%wa, 0.0%hi, 2.2%si,
1.0%st
Cpu1 : 26.0%us, 0.7%sy, 0.0%ni, 70.4%id, 1.1%wa, 0.0%hi, 0.7%si,
1.1%st
and when you look at the process list below that stuff, you might see
the real values:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
32094 game 20 0 493m 356m 11m R 61 17.8 638:30.00 srcds_linux
1499 game 20 0 487m 359m 11m S 54 17.9 516:56.58 srcds_linux
So i'd rather believe the values in process list than the summary above.
Then again, on our other bigger machine, the values are a bit different.
The summary again:
load average: 4.63, 5.07, 5.35
Cpu0 : 16.3%us, 0.0%sy, 0.0%ni, 82.4%id, 0.3%wa, 0.0%hi, 1.0%si,
0.0%st
Cpu1 : 73.1%us, 0.7%sy, 0.0%ni, 25.6%id, 0.0%wa, 0.0%hi, 0.7%si,
0.0%st
Cpu2 : 0.0%us, 0.0%sy, 0.0%ni, 97.7%id, 2.0%wa, 0.0%hi, 0.3%si,
0.0%st
Cpu3 : 68.1%us, 1.0%sy, 0.0%ni, 30.2%id, 0.0%wa, 0.0%hi, 0.7%si,
0.0%st
And the process info:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7339 game 20 0 392m 258m 21m S 78 3.3 91:41.36 srcds_linux
10288 game 20 0 399m 275m 21m R 73 3.5 38:46.18 srcds_linux
7262 game 20 0 317m 201m 15m S 18 2.5 195:01.39 srcds_linux
5686 game 20 0 341m 157m 12m R 2 2.0 11:07.86 srcds_linux
As you can see, the differences are caused by different kernels. We had
2.6.37 or something where there was constant 16-20 load average while
the cpu stats where the same, just load went bonkers. Never seen 100%
unless the server is stuck like it has been couple of times since the
lazor update. It might be i7 issue, we have older machines.
-ics
25.7.2011 14:22, Saint K. kirjoitti:
I could live with that, at least knowing a reason why my 3000,- euro hardware
can only sustain 7-ish 24 slots TF2 servers.
Saint K.
________________________________________
From: hlds_linux-boun...@list.valvesoftware.com
[hlds_linux-boun...@list.valvesoftware.com] On Behalf Of James Botting
[bottswan...@googlemail.com]
Sent: 25 July 2011 13:18
To: Half-Life dedicated Linux server mailing list
Subject: Re: [hlds_linux] cpu on i7 920
Everytime a new weapon goes 'pew pew' the laser destroys a section of your
CPU.
It's a new feature.
On 25/07/2011 12:14, "Andres Pozos"<javato...@yahoo.es> wrote:
Its not a bug its a "feature", jk. Orangebox take teh 100% cpu usage in
a core with more than 25 slots, i tested it on many linux distros, many
kernel configurations and many cpus. So welcome to the club.
Hi,
Thanks for the reply.
The servers are build according to Tyans best practise, so everything
is inserted in the correct slots. I've recently also updated the BIOS
versions to be sure.
One thing I notice, at the memory settings is a "snooping" option - If
this is disabled, the overall load is slightly lower (as it is now).
I'd generally wouldn't blame the hardware either, however, seeing I
can't find anything software wise, it's the logical next thing to look
at.
Any more tips are welcome!
Saint K.
________________________________________
From: Jesse Molina [je...@opendreams.net]
Sent: 25 July 2011 12:36
To: Half-Life dedicated Linux server mailing list
Cc: Saint K.
Subject: Re: [hlds_linux] cpu on i7 920
Looks fine, don't mess with it.
generic-receive-offload would be good if you were doing 10G networking,
but otherwise forget about it.
Make sure that your RAM is in the right slots as recommended by Tyan.
That can slow things down sometimes but I would not expect that to cause
such significant problems.
I have no clue. Grab an old cruddy desktop, set it up on your home
network, do a quickplay qualified server, and then watch how it runs.
Use the same OS and versions you are using on your server and then start
twiddling. You only need about a 2Mbps upstream rate for a 24-player
server.
I would blame software way before I started blaming hardware.
Actually, I'd blame something you did unknowingly, first, but just
because I'm a BOFH.
People like to throw switches in the desperate hope that one of them was
put there by system developers specifically just to slow things down,
like a turbo switch on an old 486DX.
"Surely, my sheer desire to make things go faster and by randomly
throwing every bios setting, recompiling my kernel with obscure realtime
patches I found, enabling weird sysctrl parameters, and buying a Bigfoot
gaming NIC will make things go faster!"
And that's why we have fps_max 1000 and 100PPS update/cmd rates on
servers.
I really have no idea what I'm talking about. I've only been messing
with srcds servers for the last nine months or so.
Then again... Seagate did ship me all of those SATA 300 drives with the
150-limiting jumpers on by default.
Saint K. wrote:
Hi,
I am getting these values returned, not entirely sure what I am
looking at;
mrblonde:~# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: off
large-receive-offload: off
ntuple-filters: off
receive-hashing: off
Does this appear to be good? I've checked the chipset specs and it
supports checksum offloading.
Saint K.
________________________________________
From: hlds_linux-boun...@list.valvesoftware.com
[hlds_linux-boun...@list.valvesoftware.com] On Behalf Of Andrew
Armitage [and...@thirdlife.org]
Sent: 25 July 2011 10:36
To: hlds_linux@list.valvesoftware.com
Subject: Re: [hlds_linux] cpu on i7 920
I wouldn't expect problems with. But I happily admit to being no
expert.
Try ethtool -k<interface> and see what's what?
A
On 25/07/2011 08:42, Saint K. wrote:
The servers are build on Tyan Tempest i5400 motherboards, based on
the Intel 5400B chipset platform, the Gbit nic's used on this board
are Intel 82563EB chips.
I've never really figured the load could be related to the networking
chip as our throughput tests never really show any issues when tested
(with all sorts of packet sizes, tcp/udp)
Saint K. ________________________________________ From:
hlds_linux-boun...@list.valvesoftware.com
[hlds_linux-boun...@list.valvesoftware.com] On Behalf Of Andrew
Armitage [and...@thirdlife.org] Sent: 25 July 2011 09:36 To:
hlds_linux@list.valvesoftware.com Subject: Re: [hlds_linux] cpu on i7
920
Maybe the issue is the network hardware? HLDS is very network
intensive.
I believe that some cards support checksum offloading and some
don't.
A
On 25/07/2011 07:28, Saint K. wrote:
What I am still not getting is that our Xeon E5420's are doing
like 70-80% load on a single core for 24 players, and our Xeon
E5410's 90%+, where you say your older 4600+ does 70%.
Tried all sorts of different kernels out there.
Is there perhaps certain BIOS settings which could benefit when
running gameservers on them?
Ours surely should perform much better then that?
Saint K. ________________________________________ From:
hlds_linux-boun...@list.valvesoftware.com
[hlds_linux-boun...@list.valvesoftware.com] On Behalf Of Jesse
Molina [je...@opendreams.net] Sent: 25 July 2011 05:15 To:
Half-Life dedicated Linux server mailing list Subject: Re:
[hlds_linux] cpu on i7 920
I have a AMD Phenom x6 1055T doing multiple servers at the same
time. TF2 causes the active core to go to 100% for about two
seconds during map changes, but otherwise I've never seen it go
that high for extended periods of time. Average during full
24-player usage is about 40%.
I also have an older AMD Athlon64 x2 4600+ that runs a single
24-player TF2 quickplay server. It averages 70% usage when full
and gameplay is great.
Both of these are desktop class boards with DDR2 PC800M RAM.
Linux 2.6.39.
Try watching your CPU usage at (relatively) high resolution with
something like "htop -d 1"
No clue why you are maxing out like that.
Eric Riemers wrote:
All,
I run a 32 slots server on a i7 920 @ 2.67ghz, but i can see
with top and such that its potentially maxing out at 100% at
times since it only uses one core. Is it really now doing so much
cpu that even a i7 core isn't enough? Didn't have much complaints
before the pew pew.
24 slots on the same server do around 60% when full.
Eric
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-- # Jesse Molina # Mail = je...@opendreams.net # Page =
page-je...@opendreams.net # Cell = 1.602.323.7608 # Web =
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--
# Jesse Molina
# Mail = je...@opendreams.net
# Page = page-je...@opendreams.net
# Cell = 1.602.323.7608
# Web = http://www.opendreams.net/jesse/
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