On 08/10/2011 02:55 AM, Upendra Moturi wrote: Hi, does this patch solve your problem? I am setting the MTU to fixed 2kb. Doing tests with scp seems to indicate that this improved the situation -- at least for me. Stefan Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> --- src/util/network.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) Index: libvirt-acl/src/util/network.c =================================================================== --- libvirt-acl.orig/src/util/network.c +++ libvirt-acl/src/util/network.c @@ -1156,8 +1156,8 @@ virBandwidthEnable(virBandwidthPtr bandw virCommandFree(cmd); cmd = virCommandNew(TC); - virCommandAddArgList(cmd,"class", "add", "dev", iface, "parent", - "1:", "classid", "1:1", "htb", NULL); + virCommandAddArgList(cmd,"class", "add", "dev", iface, "parent", + "1:", "classid", "1:1", "htb", NULL); virCommandAddArgList(cmd, "rate", average, NULL); if (peak) @@ -1170,9 +1170,9 @@ virBandwidthEnable(virBandwidthPtr bandw virCommandFree(cmd); cmd = virCommandNew(TC); - virCommandAddArgList(cmd,"filter", "add", "dev", iface, "parent", - "1:0", "protocol", "ip", "handle", "1", "fw", - "flowid", "1", NULL); + virCommandAddArgList(cmd,"filter", "add", "dev", iface, "parent", + "1:0", "protocol", "ip", "handle", "1", "fw", + "flowid", "1", NULL); if (virCommandRun(cmd, NULL) < 0) goto cleanup; @@ -1191,8 +1191,8 @@ virBandwidthEnable(virBandwidthPtr bandw virCommandFree(cmd); cmd = virCommandNew(TC); - virCommandAddArgList(cmd, "qdisc", "add", "dev", iface, - "ingress", NULL); + virCommandAddArgList(cmd, "qdisc", "add", "dev", iface, + "ingress", NULL); if (virCommandRun(cmd, NULL) < 0) goto cleanup; @@ -1202,7 +1202,7 @@ virBandwidthEnable(virBandwidthPtr bandw virCommandAddArgList(cmd, "filter", "add", "dev", iface, "parent", "ffff:", "protocol", "ip", "u32", "match", "ip", "src", "0.0.0.0/0", "police", "rate", average, - "burst", burst, "mtu", burst, "drop", "flowid", + "burst", burst, "mtu", "2kb", "drop", "flowid", ":1", NULL); if (virCommandRun(cmd, NULL) < 0)
small correction it is not mbps ,it is MBps
On Wed, Aug 10, 2011 at 12:06 PM, Upendra Moturi <upendra.m@hexagrid.com <mailto:upendra.m@hexagrid.com>> wrote:
Hi
I am using 0.9.4 version of libvirt and want to limit bandwidth. I installed libvirt on ubuntu 11.04 using libvirt source.
For this i am using the QOS configuration
<devices> <interface type='network'>
<source network='default'/> <target dev='vnet0'/> *<bandwidth> <inbound average='1000' peak='5000' burst='1024'/> <outbound average='128' peak='256' burst='256'/>
</bandwidth>* </interface>
Here the inbound limit is working properly but the outbound is limiting but not with values which is give
Here are the scenarios i tested and the results
when i gave average as 2048 --- it is limiting with 600 -- 700 kb
average result ===================== 2048 (2mpbs) 600-700 kb 4096 (4mbps) 1 MB/s 10240 (10mbps) 2-3 MB/s 12288 (12 mbps) 3-4 MB/s 20480 (20 mbps) 16-18 MB/s
Is this the expected behavior or some thing is missing If this is the expected behavior ,then in what ratio it is limiting.
Please help me Thanks in advance.
-- Thanks and Regards, Upendra.M
-- Thanks and Regards, Upendra.M
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