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Re: [Xen-users] max utilization

Heh, fair enough :-)

In which case, if 752M is enough then:

xe vm-memory-dynamic-range-set uuid=<uuid> min=752MiB max=752MiB

otherwise, edit /boot/extlinux.conf to bump up the dom0_mem to a larger number, then reboot. You may have to do the above command once you've rebooted.

For more CPUs, you'll need to try the beta of 5.6-FP1, which has some fixes for multi-vcpu dom0.


On 19 Oct 2010, at 13:36, balakrishna wrote:

actly my scenario is i am testing network driver for our 10G NIC card. for that i have inserted our 10G card in xenserver machine & installed our driver in order to test that  need to send heavy traffic from physical host (xenserver) to peer(linux machine). in that case if i send heavy traffic host is getting hang. for that purpose i want to giv more memory & cpu to dom0 .


On Tue, Oct 19, 2010 at 6:01 PM, Jonathan Ludlam <Jonathan.Ludlam@xxxxxxxxxxxxx> wrote:
I don't think you want to do that.

dom0 is intended to be lightweight so as to leave as many resources as possible for your VMs. For example, your VMs will are only able to use what's left of your memory, so we try hard to keep dom0's memory usage to a minimum.

In your case, dom0 is taking about 550 megs, leaving your VMs about 15.5 gigs to use. 


On 19 Oct 2010, at 13:05, balakrishna wrote:


--> i have 8cores cpu. but my xenserver is using only one cpu, how to make use of all cpu cores

--> machine is having 16G ram but domain0 is having very less memory. is there any way to increase memory for domain0

[root@xenserver-DZONGRI ~]# cat /proc/meminfo
MemTotal:       574464 kB
MemFree:        111776 kB
Buffers:          9500 kB
Cached:         117320 kB
SwapCached:        100 kB
Active:          79220 kB
Inactive:        93112 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       574464 kB
LowFree:        111776 kB
SwapTotal:      524280 kB
SwapFree:       524180 kB
Dirty:               4 kB
Writeback:           0 kB
AnonPages:       45436 kB
Mapped:          16700 kB
Slab:           185236 kB
SReclaimable:     4304 kB
SUnreclaim:     180932 kB
PageTables:          0 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
WritebackTmp:        0 kB
CommitLimit:    811512 kB
Committed_AS:   610184 kB
VmallocTotal:   233464 kB
VmallocUsed:      4968 kB
VmallocChunk:   228316 kB
DirectMap4k:    755452 kB
DirectMap2M:         0 kB

thanks in advacne.

Balakrishna B


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