From: Franck BALAZOT <fbalazot@aeta.fr>
To: lartc@vger.kernel.org
Subject: [LARTC] rate precision of CBQ
Date: Tue, 17 Jul 2001 06:25:37 +0000 [thread overview]
Message-ID: <marc-lartc-99535118526106@msgid-missing> (raw)
Hi all,
I have managed some CBQ class like :
tc class add dev eth0 parent 10:1 classid 10:100 cbq bandwidth 1920KBit
rate 784 KBit allot 1514 weight 1 Kbit prio 8 maxburst 20 avpkt 1000
bounded
It works fine, but I noticed that the rate precision is not very good
(despite the bounded parameter) :
784 kBit => 96 KBytes/s (theoric) but 130-140 KBytes/s in reality
512 kBit => 64 KBytes/s (theoric) but 80-90 KBytes/s in reality
256 kBit => 32 KBytes/s (theoric) but 33-34 KBytes/s in reality
At low rate (< 256k), it seems good but not at higher rate.
Is this problem coming from my parameters (weight, prio, ...) or is it a
known problem with CBQ ?
regards,
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Franck BALAZOT (fbalazot@aeta.fr)
AETA.COM
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next reply other threads:[~2001-07-17 6:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-17 6:25 Franck BALAZOT [this message]
2001-07-17 9:16 ` [LARTC] rate precision of CBQ Marian Jancar
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