keepalived high cpu usage / Vyatta VC6.2 / many VLANs with VRRP
Aitor Ibarra <[email protected]> Tue, 10 May 2011 17:26:03 +0100
| Newsgroups | gmane.linux.keepalived.announce |
|---|---|
| Message-ID | <C06E537F3FC8644AB284935CEA557B240213E988F8D1@VMHOTEL-SBS2008.vmhotelltd.local> |
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Hi,
I'm running into a cpu usage issue with keepalived as included in Vyatta VC=
6.2 - wondering if this has been addressed with more recent releases not ye=
t integrated into Vyatta... I'm an absolute newbie when it comes to both VR=
RP and Vyatta, so please forgive any naivety.
Basically, the more VLANs I set up (each running a subnet with a VRRP insta=
nce) the longer keepalived (the parent process) spends at a high CPU level.=
Keepalived seems to be single threaded, and with about 500 VLANs on a 1.8G=
Hz quad core xeon, I see keepalived run at about 70% of a core for several =
minutes until the VRRP virtual ips for all the subnets come up. If I push i=
t to 1000 VLANs, it stays stuck at 100% and the virtual ips NEVER come up. =
Is it just plain unrealistic to run so many instances? What's the largest n=
umber of VRRP instances tested?
The VLANS are running on a bonded pair of Ethernet interfaces. I can run wi=
th no VRRP without issue (and neglible CPU usage), but I need an HA solutio=
n.
Thanks,
Aitor
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nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>Hi,<o:p></o:p></=
p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>I’m =
running into a cpu usage issue with keepalived as included in Vyatta VC6.2 =
– wondering if this has been addressed with more recent releases not =
yet integrated into Vyatta... I’m an absolute newbie when it comes to=
both VRRP and Vyatta, so please forgive any naivety.<o:p></o:p></p><p clas=
s=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Basically, the more=
VLANs I set up (each running a subnet with a VRRP instance) the longer kee=
palived (the parent process) spends at a high CPU level. Keepalived seems t=
o be single threaded, and with about 500 VLANs on a 1.8GHz quad core xeon, =
I see keepalived run at about 70% of a core for several minutes until the V=
RRP virtual ips for all the subnets come up. If I push it to 1000 VLANs, it=
stays stuck at 100% and the virtual ips NEVER come up. Is it just plain un=
realistic to run so many instances? What’s the largest number of VRRP=
instances tested?<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p>=
<p class=3DMsoNormal>The VLANS are running on a bonded pair of Ethernet int=
erfaces. I can run with no VRRP without issue (and neglible CPU usage), but=
I need an HA solution.<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p=
></p><p class=3DMsoNormal>Thanks,<o:p></o:p></p><p class=3DMsoNormal><o:p>&=
nbsp;</o:p></p><p class=3DMsoNormal>Aitor<o:p></o:p></p></div></body></html=
>=
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