Re: [Users] Fwd: Re: Memory usage

Hi I think I found the issue. I suspect it will happen when you get over 35% of used memory. Can you please create a bug for this issue? Or is there one already? -- Martin Sivák msivak(a)redhat.com Red Hat Czech RHEV-M SLA / Brno, CZ ----- Original Message ----- > I'm waiting for the next alarm. In the meanwhile this is the output now: > vdsClient -s saturnus2 getVmStats 3b9aa245-75ff-42e8-b921-1c9ce61826bf > > 3b9aa245-75ff-42e8-b921-1c9ce61826bf > Status = Running > guestFQDN = galatea.***.**** > memUsage = 32 > acpiEnable = true > netIfaces = [{'inet6': [], 'hw': '52:54:00:49:11:9d', 'inet': > ['192.168.99.19'], 'name': 'eth1'}, {'inet6': [], 'hw': > '00:1a:4a:67:c4:b3', 'inet': ['10.110.X.X'], 'name': 'eth2'}, {'inet6': [], > 'hw': '52:54:00:f1:22:48', 'inet': ['192.168.122.1'], 'name': 'virbr0'}] > pid = 38144 > session = Unknown > vmType = kvm > timeOffset = 0 > balloonInfo = {'balloon_max': '12582912', 'balloon_min': '8388608', > 'balloon_target': '12582912', 'balloon_cur': '12582912'} > pauseCode = NOERR > disksUsage = [{'path': '/', 'total': '37655093248', 'fs': 'ext4', > 'used': '21765771264'}, {'path': '/boot', 'total': '507744256', 'fs': > 'ext4', 'used': '49356800'}] > network = {'vnet0': {'macAddr': '00:1a:4a:67:c4:b3', 'rxDropped': '0', > 'txDropped': '0', 'rxErrors': '0', 'txRate': '0.0', 'rxRate': '0.0', > 'txErrors': '0', 'state': 'unknown', 'speed': '1000', 'name': 'vnet0'}, > 'vnet1': {'macAddr': '52:54:00:49:11:9d', 'rxDropped': '0', 'txDropped': > '0', 'rxErrors': '0', 'txRate': '0.0', 'rxRate': '0.0', 'txErrors': '0', > 'state': 'unknown', 'speed': '1000', 'name': 'vnet1'}, 'vnet2': {'macAddr': > '52:54:00:66:d3:aa', 'rxDropped': '0', 'txDropped': '0', 'rxErrors': '0', > 'txRate': '0.0', 'rxRate': '0.0', 'txErrors': '0', 'state': 'unknown', > 'speed': '1000', 'name': 'vnet2'}} > memoryStats = {'swap_out': '0', 'majflt': '0', 'mem_free': '8520656', > 'swap_in': '0', 'pageflt': '396', 'mem_total': '12197520', 'mem_unused': > '1580896'} > guestName = galatea.brusselsairport.aero > elapsedTime = 2251149 > displayType = qxl > cpuSys = 12.76 > appsList = ['ovirt-guest-agent-1.0.8-1.el6', 'kernel-2.6.32-71.el6'] > guestOs = 2.6.32-71.el6.x86_64 > username = vandenpt > hash = -3779086589437073991 > displayIp = 0 > displayPort = 5900 > guestIPs = 192.168.99.19 10.110.50.84 192.168.122.1 > kvmEnable = true > disks = {'vda': {'readLatency': '0', 'apparentsize': '45097156608', > 'writeLatency': '1313701', 'imageID': > '528a377f-4f98-4023-92de-ce52c394d4a9', 'flushLatency': '187524', > 'readRate': '0.00', 'truesize': '45097156608', 'writeRate': '8502.90'}, > 'hdc': {'readLatency': '0', 'apparentsize': '0', 'writeLatency': '0', > 'flushLatency': '0', 'readRate': '0.00', 'truesize': '0', 'writeRate': > '0.00'}} > monitorResponse = 0 > statsAge = 0.47 > cpuUser = 68.45 > lastLogin = 1392707812.29 > clientIp = > displaySecurePort = 5901 > > > > 2014-02-17 14:00 GMT+01:00 Martin Sivak <msivak(a)redhat.com&gt;: > > > Hi Koen, > > > > can you try the mentioned vdsClient command (vdsClient getVmStats > > <affected vm>) as soon as you get the warning about negative memory? The > > one David sent to us does not contain the negative number and we weren't > > able to find the issue based on it. > > > > Thanks > > > > -- > > Martin Sivák > > msivak(a)redhat.com > > Red Hat Czech > > RHEV-M SLA / Brno, CZ > > > > ----- Original Message ----- > > > Any updates about the issue? Because just now, the alarm went off again > > :-) > > > Kind regards, > > > > > > Koen > > > > > > > > > 2014-02-13 16:55 GMT+01:00 Martin Sivak <msivak(a)redhat.com&gt;: > > > > > > > Thank you. > > > > > > > > I wonder why mem_total is smaller than balloon_cur (and max). I will > > have > > > > to dig a bit more to see what happened. > > > > > > > > -- > > > > Martin Sivák > > > > msivak(a)redhat.com > > > > Red Hat Czech > > > > RHEV-M SLA / Brno, CZ > > > > > > > > ----- Original Message ----- > > > > > ---------- Forwarded message ---------- > > > > > From: "david van zeebroeck" < david(a)analytics.brusselsairport.be&gt; > > > > > Date: Feb 13, 2014 4:31 PM > > > > > Subject: Re: [Users] Memory usage > > > > > To: "Martin Sivak" < msivak(a)redhat.com > > > > > > Cc: "Doron Fediuck" < dfediuck(a)redhat.com >, "Koen Vanoppen" < > > > > > vanoppen.koen(a)gmail.com >, < users(a)ovirt.org > > > > > > > > > > > in attachement is the output of vdsclient > > > > > > > > > > > > > > > > > > > > > > > > > On Thu, Feb 13, 2014 at 2:26 PM, Martin Sivak < msivak(a)redhat.com > > > > > wrote: > > > > > > > > > > > > > > > Hi everybody, > > > > > > > > > > would it be possible to add the output of vdsClient getVmStats > > <affected > > > > vm > > > > > id> from the affected host here and to the bug? > > > > > > > > > > Also can we please get the bug number that tracks this issue? I > > could not > > > > > find it in BZ. > > > > > > > > > > -- > > > > > Martin Sivák > > > > > msivak(a)redhat.com > > > > > Red Hat Czech > > > > > RHEV-M SLA / Brno, CZ > > > > > > > > > > ----- Original Message ----- > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > From: "Koen Vanoppen" < vanoppen.koen(a)gmail.com > > > > > > > > To: users(a)ovirt.org > > > > > > > Sent: Thursday, February 13, 2014 12:18:24 PM > > > > > > > Subject: Re: [Users] Memory usage > > > > > > > > > > > > > > > > > > > > > > > > > > > > We can't turn off the memory balloon option because we are > > running > > > > the > > > > > > > 3.3.2 > > > > > > > with the bug of the memory balloon. Thx for the help! > > > > > > > > > > > > Which balloon bug? > > > > > > > > > > > > > On Feb 13, 2014 10:51 AM, "Doron Fediuck" < dfediuck(a)redhat.com&gt; > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > > From: "René Koch" < rkoch(a)linuxland.at > > > > > > > > > To: "Doron Fediuck" < dfediuck(a)redhat.com > > > > > > > > > Cc: "Koen Vanoppen" < vanoppen.koen(a)gmail.com >, > > users(a)ovirt.org , > > > > > > > > "Martin > > > > > > > > Sivak" < msivak(a)redhat.com > > > > > > > > > Sent: Thursday, February 13, 2014 11:16:27 AM > > > > > > > > Subject: Re: [Users] Memory usage > > > > > > > > > > > > > > > > On Thu, 2014-02-13 at 03:49 -0500, Doron Fediuck wrote: > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > > > > From: "René Koch" < rkoch(a)linuxland.at > > > > > > > > > > > To: "Doron Fediuck" < dfediuck(a)redhat.com > > > > > > > > > > > Cc: "Koen Vanoppen" < vanoppen.koen(a)gmail.com >, > > > > users(a)ovirt.org , > > > > > > > > > > "Martin > > > > > > > > > > Sivak" < msivak(a)redhat.com > > > > > > > > > > > Sent: Wednesday, February 12, 2014 7:31:47 PM > > > > > > > > > > Subject: Re: [Users] Memory usage > > > > > > > > > > > > > > > > > > > > On Wed, 2014-02-12 at 11:22 -0500, Doron Fediuck wrote: > > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > > > > > > From: "René Koch" < rkoch(a)linuxland.at > > > > > > > > > > > > > To: "Koen Vanoppen" < vanoppen.koen(a)gmail.com > > > > > > > > > > > > > Cc: users(a)ovirt.org > > > > > > > > > > > > Sent: Wednesday, February 12, 2014 4:18:37 PM > > > > > > > > > > > > Subject: Re: [Users] Memory usage > > > > > > > > > > > > > > > > > > > > > > > > On Wed, 2014-02-12 at 15:14 +0100, Koen Vanoppen wrote: > > > > > > > > > > > > > In The GUI, it says it's using 25% of the memory. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I guess it's the real value, right? > > > > > > > > > > > > The same happened for the memcached vm, someone > > reported > > > > to me > > > > > > > > > > > > - > > > > > > > > > > > > negative value in REST-API, but correct graph in oVirt > > > > webadmin > > > > > > > > > > > > GUI. > > > > > > > > > > > > > > > > > > > > > > > > I fear I have no idea how this can happen - so maybe > > > > someone > > > > > > > > > > > > else > > > > > > > > > > > > can > > > > > > > > > > > > help you troubleshoot this issue. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > 2014-02-12 15:10 GMT+01:00 Koen Vanoppen < > > > > > > > > > > > > > vanoppen.koen(a)gmail.com >: > > > > > > > > > > > > > Thanks for the quick respons, but there is no > > memcached > > > > > > > > > > > > > running on that VM. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Kind regards > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > 2014-02-12 15:06 GMT+01:00 René Koch < > > > > rkoch(a)linuxland.at >: > > > > > > > > > > > > > > > > > > > > > > > > > > On Wed, 2014-02-12 at 14:55 +0100, Koen Vanoppen > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > Dear all, > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > When we monitor one of our machines, we noticed > > > > > > > > > > > > > > that > > > > > > > > > > > > > there was one vm > > > > > > > > > > > > > > that was constantly giving a error of memory > > > > > > > > > > > > > > usage. > > > > > > > > > > > > > But when we took a > > > > > > > > > > > > > > look at it, there is actually nothing wrong with > > > > > > > > > > > > > > it. > > > > > > > > > > > > > Now we looked > > > > > > > > > > > > > > furhter then that. We looked at the API of the > > > > > > > > > > > > > machine and noticed > > > > > > > > > > > > > > something very strange: > > > > > > > > > > > > > > > > > > > > > > > > > > > > <statistic > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > href="/api/vms/3b9aa245-75ff-42e8-b921-1c9ce61826bf/statistics/b7499508-c1c3-32f0-8174-c1783e57bb08" > > > > > > > > > > > > > > > > > > > id="b7499508-c1c3-32f0-8174-c1783e57bb08"><name>memory.used</name><description>Memory > > > > > > > > > > > > > used (agent)</description><values > > > > > > > > > > > > > > > > > > > type="INTEGER"><value><datum>-944892806</datum></value></values><type>GAUGE</type><unit>BYTES</unit> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > It's a negative... > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Do you have memcached running in this vm? > > > > > > > > > > > > > > > > > > > > > > > > > > I heard about this issue with memcached, but never > > > > > > > > > > > > > tested memcached in > > > > > > > > > > > > > my oVirt environment. You get the real usage value > > > > > > > > > > > > > with > > > > > > > > > > > > > memory.used = memory.installed + memory.used > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Regards, > > > > > > > > > > > > > René > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > What could be the problem? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Kind regards, > > > > > > > > > > > > > > > > > > > > > > > > > > > > koen > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Guys, > > > > > > > > > > > these values are usually a result of overcommitment > > mechanism > > > > > > > > > > > usage. > > > > > > > > > > > For example, if KSM is effective, it will free a lot of > > > > memory > > > > > > > > > > > pages, > > > > > > > > > > > and total-free-committed becomes negative. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Thanks a lot for the information. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This was reported in > > > > > > > > > > > https://bugzilla.redhat.com/show_bug.cgi?id=977758 > > > > > > > > > > > and the engine is using memFree reported by vdsm, which > > is > > > > more > > > > > > > > > > > accurate. > > > > > > > > > > > > > > > > > > > > > > The API reports the old version due to backwards > > > > compatibility. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > I just had a look at the bugzilla report and the RHEV > > > > documentation > > > > > > > > > > which says "Current memory in bytes used by the virtual > > > > machine.". > > > > > > > > > > So this means, the reported values are totally useless for > > > > > > > > > > monitoring > > > > > > > > > > memory usage of a virtual machine if KSM is active. I would > > > > expect > > > > > > > > > > to > > > > > > > > > > get the memory usage of a virtual machine and not how much > > > > memory > > > > > > > > > > is > > > > > > > > > > consumed on the hypervisor (this is pretty useless > > information > > > > for > > > > > > > > > > me). > > > > > > > > > > > > > > > > > > > > Is it planned to report the memory usage in a virtual > > machine > > > > in > > > > > > > > > > the > > > > > > > > > > API > > > > > > > > > > as well? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Regards, > > > > > > > > > > René > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > René, > > > > > > > > > started digging into this, but it may take some time. > > > > > > > > > > > > > > > > > > Note that there are 2 memory usage reports; one for the host, > > > > > > > > > and another for each VM. > > > > > > > > > My response is related to the host, while the original > > question > > > > was > > > > > > > > > for the VM. I still think the root cause is the same (ie- > > > > related to > > > > > > > > > overcommitment; for example the VM may have a balloon > > inflated), > > > > but > > > > > > > > > would like to properly check and fix if needed. > > > > > > > > > > > > > > > > > > > > > > > > Yes, I know. So my question was if we can add another value > > for the > > > > > > > > usage in the vm in addition to the usage of the vm on the host. > > > > > > > > > > > > > > > We'll know once we understand the cause- ie is it a bug needs > > fixing > > > > or > > > > > > > should we indeed add another value > > > > > > > > > > > > > > If you have a setup with this issue, try removing the balloon > > device > > > > > > > and see if it helps / changes. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > In order to make sure we keep track of it, please open a bug > > > > with all > > > > > > > > > the > > > > > > > > > relevant info. > > > > > > > > > > > > > > > > > > > > > > > > > I'll open a bug for this. > > > > > > > > > > > > > > > Thanks > > > > > > > > > > > > > > > > > > > > > > > > Thanks and keep reporting! > > > > > > > > > Doron > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > Users mailing list > > > > > > > Users(a)ovirt.org > > > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > _______________________________________________ > > > > > > Users mailing list > > > > > > Users(a)ovirt.org > > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > _______________________________________________ > > > > > Users mailing list > > > > > Users(a)ovirt.org > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > > > _______________________________________________ > > > > > Users mailing list > > > > > Users(a)ovirt.org > > > > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > > >