ettv_b6 causing MAJOR lags on broadcasts

chosen_ · Post by **chosen_** » Mon Aug 29, 2005 10:22 am

Well, i have the same prob since ettv b6 (no test with ettv b5)

Today, we will use my matchserver for an ettv match.

The ETTV Servers of arni and me are in the same servercenter and this server center is almost directly connected to the german DECIX.
Tenovis databorg is also good known for their quality and!! bandwidth.

Also an amd xp 3200+ (ettv serv) and intel p4 (matchserver today) won't produce any lags.

And yes, i know that i have enough bandwith and cpu power, and have a good server

with ettv b3 and b2 did successfull broadcast the atlantic battle with 250 viewers (2x 100 slots, 1x 50 slots).

And at least, i don't believe, that 2 ettvservs with 50 viewers need less power than 1 ettvserv with 100 viewers.

Hope we find a fast solution, i have to broadcast some matches this week

cya
chosen

Edit:
I was broadcasting the atlantic battle over the french hub (the gameserver makes now the problems too) without probs, so no bandwidth probs 4 sure.

Post by **bani** » Mon Aug 29, 2005 10:42 am

please try b4 and verify exactly it's a b6 only bug.

arni · Post by **arni** » Mon Aug 29, 2005 11:46 am

ok, i think i have to make some corrections to what i've claimed to be the reason:

* It doesnt seem to be a problem of b6, because we are currently having an almost lagfree broadcast with master and slave beeing on the same network ...

On the other hand this prooves:

* The ettv server has got enough bandwidth and cpu to handle its 125viewers

* The problems that we had before must have been caused by the matchserver or on the way from it to the recorder (yes i know you said this in the first place

)

More observations:

It only seems to happen with lots of ettv servers connected directly to the matchserver - each time this happened it were 5 or 6.

There comes the arguement of too little bandwidth on the matchserver in again - reason i cant believe this is: Same happened on 3 different matchservers with direct lan connections to the internet as well as the players on the same server not lagging? (Again players as well as recorders beeing all over europe sort of disprooves the possibility that connection to recorders was just crap)

Possible reason:

These are just my own ideas, in the rest of the thread you had always rejected all my bug claims, thats why its only my own thoughts about it (as it also was before)

--> Does the ettv master have problems in handling large numbers of ettv slaves?

Post by **bani** » Mon Aug 29, 2005 1:10 pm

is the master b4 or b6?

arni · Post by **arni** » Mon Aug 29, 2005 1:16 pm

all b6 now

(and for the other broadcasts aswell)

Post by **bani** » Mon Aug 29, 2005 1:17 pm

-=[VP]+arni+=- wrote:all b6 now

(and for the other broadcasts aswell)

was the master b6 or b4 when you were getting lags before?

arni · Post by **arni** » Mon Aug 29, 2005 1:27 pm

bani wrote:
-=[VP]+arni+=- wrote:all b6 now

(and for the other broadcasts aswell)
was the master b6 or b4 when you were getting lags before?

was also b6

chosen_ · Post by **chosen_** » Tue Aug 30, 2005 5:45 am

Well, i had no lag problems yesterday, cause there were just 65 viewers on my server.

Well, arni had lags when someone joined his other gameservers, i don't think that it was a problem before b6, cause (!) i have 5 gameserver and 2 ettv servers on one machine when i broadcast the attlantic battle.

I think finally, that the b6 needs more resources, what is maybe the problem that causes lags.

Anyway i think if 2 full 50 slots need less resources than full 1 100 slots ettv serv, its .. hmm .. don't know how to call it

If u want, we can test it next week, there are some good matches that will have some more viewers than a 4th division semifinal like yesterday.

At all, we can test this week: ettv_b6 on wed, ettv_b4 on thu and on saturday and sunday everything we want cause there are 5 matches waiting

if u want i can give u access to ssh and my 2nd ettv server to look at the problem yourself.

cya
chosen

arni · Post by **arni** » Tue Aug 30, 2005 6:55 am

the ettv having a 1,5 sec lag was normal because the matchserver that became active was in swapfile and matchservers have higher prio than the ettv replayer.

not an ettv problem just machine busy

but the thing that was different yesterday is that we only had 3 ettv servers connected to the master - i think that makes more of a difference

Post by **bani** » Tue Aug 30, 2005 10:28 am

b6 takes less resources than b4 or b5.

arni · Post by **arni** » Sat Sep 03, 2005 4:03 pm

ok bani we seem to have localised the problem more:

Matchserver and ettv server were on the same network segment ...

Matchserver b4 & ETTV server b6 - Works perfectly

Matchserver b6 & ETTV server b6 - Causing these strange lags with frames with 50 or 00 at the end get dropped ...

Post by **bani** » Sat Sep 03, 2005 9:11 pm

ok that helps.

Post by **bani** » Wed Sep 07, 2005 5:17 pm

what os is the matchserver, recorder, slaves, etc?

arni · Post by **arni** » Wed Sep 07, 2005 6:06 pm

usually all linux, but the bug also happened with a windoze matchserver of the same version

Post by **bani** » Wed Sep 07, 2005 11:36 pm

on your linux servers can you do /sbin/ifconfig
and tell me the txqueuelen for your ethernet interfaces?
do any of your interfaces say non-zero for errors: or dropped: or overruns: ?

also whats the output of cat /proc/sys/net/core/rmem* and cat /proc/sys/net/core/wmem* and cat /proc/sys/net/core/netdev_max_backlog ?