similar to: vm running slowly in powerful host

Am 2015-09-17 09:29, schrieb Pasi K?rkk?inen: > > Are you using nfs over UDP or TCP ? > TCP, but Network cant be the bottleneck, have tested it with iperf between bare metal/domU's and the nfs domU and it was perfectly fast... > > I don't think. > > > If you used NFS over UDP, try running it over TCP. no I use it over TCP... > > What does

Hi all, I just installed centos 5.4 xen-kernel on intel core i5 machine as dom0. After some hours of syncing a raid10 array (8 sata disk) I noticed a steadily increasing loadavg. I think without reasonable i/o wait or cpu utilization the loadavg on this system should be very lower. If this loadavg is normal I would be greatful if somone could explain why. The screenshots below show that there is

Hi, I'm running a CentOS 4. server and I sometimes face a weird problem. It is a weird performance problem, and here is how I discovered it. This server runs OpenVZ virtual machines, and one of them is an asterisk server for my personal use. The first symptom of the problem is that the voice quality became flaky. So I logged on the server to see what could be eating cpu cycles, when I

I did some additional testing - I stopped Kafka on the host, and kicked off a disk check, and it ran at the expected speed overnight. I started kafka this morning, and the raid check's speed immediately dropped down to ~2000K/Sec. I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*). The raid check is now running between 100000K/Sec and 200000K/Sec, and has been for several

Hi All, I have a client trying to us a Promise Tech iSCSI array to share 2.8TB via SAMBA. I have CentOS 4.2 with all updates installed on an IBM server. The installation and setup was pretty straightforward. The Promise box is using Gigabit Ethernet, and is the only device on that net (I think they are using a cross-over cable - I didn't set up the hardware). We're experiencing

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I have a 6.3 guest running on a 6.3 host and the output from top seems strange to me. At least I did not expect this. While in the guest on core is busy with i/o the host seems idle. Does anyone know why it is this way? See the output from top below, first the one from guest, then host. top - 14:12:35 up 12 min, 1 user, load average: 2.76,

All of our Kafka clusters are fairly write-heavy. The cluster in question is our second-heaviest ? we haven?t yet upgraded the heaviest, due to the issues we?ve been experiencing in this one. Here is an iostat example from a host within the same cluster, but without the RAID check running: [root at r2k1 ~] # iostat -xdmc 1 10 Linux 3.10.0-327.13.1.el7.x86_64 (r2k1) 05/27/16 _x86_64_ (32 CPU)

Here is a sample of running iostat on a server that has a LUN from a SAN with multiple paths. I am specifying a device list that just grabs the bits related to the multi path device: $ iostat -dxkt 1 2 sdf sdg sdh sdi dm-7 dm-8 dm-9 Linux 2.6.18-371.8.1.el5 (db21b.den.sans.org) 06/20/2014 Time: 02:30:23 PM Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await

Hello, I have run into some performance issues after adding bricks to a 3.3.1 volume. Basically I am seeing very high CPU usage and extremely degraded performance. I started a re-balance but stopped it after a couple days. The logs have a lot of entries for split-brain as well as "Non Blocking entrylks failed for". For some of the directories on the client doing an ls will show multiple

Dear group I had a R ? program that was to slow, I mad it multi core prog..to speed up, its a simulation when the runs are 100 its very fast..raising the runs to 10k mad it in the first fast then it slow down I checked the HW usafe and here is the top command results %Cpu0 ?:100.0 us, ?0.0 sy, ?0.0 ni, ?0.0 id, ?0.0 wa, ?0.0 hi, ?0.0 si, ?0.0 st %Cpu1 ?:100.0 us, ?0.0 sy, ?0.0 ni, ?0.0 id, ?0.0

libvirt_lxc causes cpu 100% usage? libvirt version : 1.1.1 I don't know what happend, any help would be appreciated. thx top - 07:39:44 up 1 day, 2:13, 2 users, load average: 4.72, 4.59, 4.51 Tasks: 243 total, 4 running, 239 sleeping, 0 stopped, 0 zombie %Cpu0 : 33.1 us, 1.3 sy, 0.0 ni, 64.6 id, 0.7 wa, 0.0 hi, 0.3 si, 0.0 st %Cpu1 : 41.1 us, 3.0 sy, 0.0 ni, 55.3 id, 0.7

hi all, below is the output of top off a machine i have, sorted by CPU utilization. my question is, how can all 8 CPUs say they're pegged at 100% user utilization, when there are just these 8 processes saying they're using 25% of a CPU each, and no other processes showing up taking any resources? i have run this test on other machines and they act as expected. i found this b/c this

Hi there, I have a multi DC global setup. 9 x Ubuntu 14.04.3 DC's in multiple Sites. This has been working nicely for some time however recently the FSMO holder has been refusing LDAP requests on occasions and showing constant very high CPU usage: top - 08:59:12 up 8:51, 1 user, load average: 1.03, 1.00, 1.03 Tasks: 186 total, 4 running, 182 sleeping, 0 stopped, 0 zombie %Cpu0 :

It was found that the software NIC team created in Centos was having issues due to a failing network cable. The team was going berserk with up/down changes. On Fri, Jul 3, 2020 at 10:12 AM Erick Perez - Quadrian Enterprises < eperez at quadrianweb.com> wrote: > Hey! > I have a strange condition in one of the servers that I don't where to > start looking. > I login to the

Hi. I'm testing a centos 5.4 xen PV guest on top of a centos 5.4 host. for some reason, the disk performance from the guest is awful. when I do an import , the io is fine for a while then climbs to 100% and stays there most of the time. at first I tougth it was because I was using file-backed disks, so deleted those and changed to LVM, but the situation did't improve. Here's an

I'm trying to figure out what's causing an average system load of 3+ to 5+ on an Intel quad core. The server has with 2 KVM guests (assigned 1 core and 2 cores) that's lightly loaded (0.1~0.4) each. Both guest/host are running 64bit CentOS 5.6 Originally I suspected maybe it's i/o but on checking, there is very little i/o wait % as well. Plenty of free disk space available on all

Hello to all, I compiled the source of smbd4wins on a suse 10.2 machine successful. On the same machine there is a samba server ver. 3.0.31. The wins is working but after a couple of days it has a high cpu load which is steadily growing and then the system hangs and I need to restart it: top - 15:11:15 up 6 days, 7:07, 2 users, load average: 0.20, 0.25, 0.29 Tasks: 311 total, 2 running,

Hi all, At the pre-big thanks to the SAMBA team for many years the great work. Sorry for my english. A week ago, have implemented productively Samba 4.1.5 on CentOS 6.5. I installed samba by default dns server built-in (internal) with the rfc2307. Everything works great, but after a while I noticed that the memory on my server is largely occupied. At this time there are about 10 users domain -

Hi Erick, what was the value of 'si' in top ? Best Regards, Strahil Nikolov ?? 3 ??? 2020 ?. 18:48:30 GMT+03:00, Erick Perez - Quadrian Enterprises <eperez at quadrianweb.com> ??????: >It was found that the software NIC team created in Centos was having >issues due to a failing network cable. The team was going berserk with >up/down changes. > > >On Fri, Jul 3,

On 3/19/2018 5:42 AM, Ondrej Valousek wrote: Removing NFS or NFS Ganesha from the equation, not very impressed on my own setup either. For the writes it's doing, that's alot of CPU usage in top. Seems bottle-necked via a single execution core somewhere trying to facilitate read / writes to the other bricks. Writes to the gluster FS from within one of the gluster participating bricks: