search for: bursty

ALL: <<diffserv-gred_10-06>> I have attached the current script that I am using. $TC qdisc add dev $EDEV parent 2:20 gred setup DPs 3 default 2 grio $TC qdisc change dev $EDEV parent 2:20 gred DP 1 limit $lim min $minTh max $maxTh avpkt $avgPL burst $bursty bandwidth $netBand probability 0.02 prio 2 $TC qdisc change dev $EDEV parent 2:20 gred DP 2 limit $lim min $minTh max $maxTh avpkt $avgPL burst $bursty bandwidth $netBand probability 0.04 prio 3 $TC qdisc change dev $EDEV parent 2:20 gred DP 3 limit $lim min $minTh max $maxTh avpkt $avgPL burst $bu...

Hello again, Is it possible to split a bandwidth equally among clients regardless of its current link speed? I have a link that can get bursty at times. At any given time the N active sessions (the ones with non-empty queues) need to be serviced simultaneously, each at a rate of 1/N''th of the link speed. My case is an internet connection that oscillates between 96 kbps and 256 kbps. I cannot predict the connection speed in order...

Hi all, Newbie to the group. Just started using Opus as part of a WebRTC project and amazed by the versatility of the codec. Great stuff!!!! I have been trying to understand the performance of Opus inband FEC in the presence of bursty loss. Although I do not have exact characterization of the loss profile, we are seeing issues over WiFi. RTCP reports about 33% loss, but I am guessing a lot of it is burstly, lengthy drop outs as listeners are reporting drop outs in the audio. My understanding of how in band FEC works and how it p...

Hi all, I have an average 2mbit multicast stream that once in a while bursts high (up to 20mbit/s) in short periods (about 200ms). Could anyone please help me with directions using tc for configuing leaky bucket shaping to this stream? I have a 5mbit/s ceiling. My system is running gentoo linux 2.6.14, and I have compiled in all QoS modules. Thanks. Oivind

I have a 24 x 1TB system being used as an NFS file server. Seagate SAS disks connected via an LSI 9211-8i SAS controller, disk layout 2 x 11 disk RAIDZ2 + 2 spares. I am using 2 x DDR Drive X1s as the ZIL. When we write anything to it, the writes are always very bursty like this: ool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 232 0 29.0M xpool 488K 20.0T 0 101 0 12.7M xpool 488K 20.0T...

...how much of it is being used. If it's not being used that much, I'd like to know if the writes *from* the journal to the rest of the disk could be delayed until a certain percentage of the journal has been used. It would be nice to be able to get more contiguous writes to the journal for bursty types of loads... Mike

Hi everyone, I''m doing some networking experiments over high BDP topologies. Right now the configuration is quite simple -- two Xen boxes connected via a dummynet router. The dummynet router is set to limit bandwidth to 500Mbps and simulate an RTT of 80ms. I''m using the following sysctl values: net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096

...g setup up and running as planned. The last barrier seems to be tcp overshooting availible bandwidth when its starting a transfer, and thereby bursting the line, so ping rises for a moment. At least this is my best guess at the problem :) There is a possibility that its just plain old traffic being bursty for some reason.. I am using bittorrent to test this, as it seems to be what stresses the line the most. Would it be possible to lower the default window size, and thereby making tcp start up slower, or would this just lower the overall speed? My efforts so far can be seen here: http://tc.schmakk.d...

Just showing someone how great DTrace is and then we spot something I do not understand. Of course it can be a major misunderstanding of myself. Would appreciate another (expert) look upon this. The goal we try to achieve is trying to get insight if there is a bursty nature in the time slot when system calls are done. Following DTrace snippet is tried: dtrace -q -p 3173 -n ''syscall::read:entry { @[probefunc] = count(); } profile:::tick-250ms { printa("%6s %@6d\n", @); printf("\n"); clear(@); }'' This to chop up a one se...

Hi, checkout new open source voipmonitor.org SIP packet sniffer.?I've developed it for my telco company and I've decided to share it. Testing and contributions are welcome! VoIPmonitor is open source live network packet sniffer which analyze SIP and RTP protocol. It can run as daemon or analyzes already captured pcap files. For each detected VoIP call voipmonitor calculates statistics

...l Pro100B, full duplex 100Mbit switch between client (PII/400 3Com905B, 128MB RAM) and server. The behavior I'm seeing in xperfmon++ v3.0 suggests that there is a problem in syncing writes from the client to the network and from the network to the server, i.e., disk traffic on the host is very bursty with peaks over 1MB/sec but with no disk traffic much of the time. The benchmark program, TESTNET 2.24, writes 65K blocks 1000 times sequentially to the mounted server share. netstat -i shows 3 input errors in 6 million frames, 1 output error in 100,000 frames. NFS mounts of this server clock ar...

...estion is : is there a way to have Icecast buffer the input / increase the input buffering ? Even though the latency would increase ? Why : On some radio streams, the listeners to a Icecast stream experience very frequent silences / disconnections. I strongly suspect that the source has a slow/bursty connection to Icecast so that the data sent to the Icecast server arrives in too discontinuous chunks, even though the average connection speed is ok. What's more, they tell me that the Icecast output is in advance vs the actual radio broadcast (through a link to their FM emitter). So I gue...

...ut I didn''t find a similar problem. Maybe I need to set quantum manually. I have tested with r2q default value (10) and also with 2 (raising quantum). Another question would be: if quantum is bigger, the client can exceed his limit by that value ? Is that possible all the time or at bursty intervals ? Thank you very much, Ciprian Nica _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

...t; (as shown below). Anyone know what's going on here? My network has both Linux and Win98 clients, but only the Win98 clients are showing this behavior. Both the Linux and Win98 clients access the same shared drives, but only the Win98 clients use shared printers. Also, the requests are bursty. The log entries below are the entire log file for this week and are copied on Tuesday morning. So after about 48hours of silence (logs are rotated on Sunday) all of a sudden this client (Win98 SE + all MS updates) is seeking user "nobody". Hmm. Note that I actually do *not* have...

...he transaction) and almost everytime the co-lo uses the web. I''d make a separate rule for the web but it doesn''t fix the general problem. I''m wondering if my problem is global synchronization and if RED would help quell my problem. Or else I''m handling the bursty traffic improperly and need to tweak my current config. I tested a line or two with red but I found the man page a bit misleading in regards to the burst. My original line was: tc qdisc add dev $DEV0 parent 1:20 handle 11: red limit 400kbit min 3000 max 6000 avpkt 1000 burst 40000 Yes, the...

Hi all, I''m having a hell of a time getting my IFB to work. I know I''ve done this before, so I''m missing something stupid. Can anybody tell me what it might be? Configs as follows: -------- #!/bin/sh modprobe ifb numifbs=1000 modprobe act_mirred modprobe 8021q brctl addbr br0 brctl setfd br0 0 brctl stp br0 off brctl addif br0 eth1 brctl addif br0 eth2 ifconfig eth1

...gt; noticeable unless you put both phones next to your > > > ears to compare. > > > > > > Latency affects delay while network loading affects > > > voice quality (e.g. break > > > ups) If the either end of your network is > > > experiencing very bursty traffic > > > patterns, then even a small latency won't > > > necessarily guarrantee good sound > > > quality. > > > > > > David Liu > > > Hong Kong > > > > > _______________________________________________ > Asterisk-User...

(By the way, upgrading to .11 seemed to take care of the skipping. Thanks!) The stream seems to be working just fine, although Winamp is showing bandwidth at 130 or higher, occasionally up to 145 or so. Most of my MP3s are 128 kbps, and ices should be re-encoding everything as 128 anyway. This is really a minor issue... but I'm wondering what could be taking up the extra bandwidth? Or

> behavior you are seeing....(that also is a difference between iceast1 and > icecast2 - no server-side buffering in icecast2 and there was in > icecast1)... What do you mean stream buffering? We never buffered in either version that I remember. If you fall behind, you get kicked. It's always been that way. jack. --- >8 ---- List archives: http://www.xiph.org/archives/

Has anyone here implemented Jon Kleinberg's burst detection algorithm ("Bursty and Hierarchical Structure in Streams" http://www.cs.cornell.edu/home/kleinber/bhs.pdf)? I'd rather not reimplement if there's already running code available.... Thanks, -s [[alternative HTML version deleted]]