[Vserver] Tuning HD performance
Hi, I'm running a vserver running various LAMP servers. A while ago I installed munin to check how the server was behaving at various times. It turns out that the server has a LOT of iowait (up to 115) when under load. What I did was that I ran tiobench on the local HD and this is what I got: -- Sequential Reads File Blk Num Avg Maximum Lat% Lat%CPU IdentifierSize Size Thr Rate (CPU%) LatencyLatency >2s >10sEff -- - --- -- -- - --- - 2.6.14.3-vs2.0.1 100 40961 446.29 99.97% 0.0060.04 0.0 0.0 446 2.6.14.3-vs2.0.1 100 40962 728.70 396.4% 0.0070.05 0.0 0.0 184 2.6.14.3-vs2.0.1 100 40964 855.43 1587.% 0.0110.20 0.0 0.054 2.6.14.3-vs2.0.1 100 40968 839.09 2328.% 0.013 56.08 0.0 0.036 Random Reads File Blk Num Avg Maximum Lat% Lat%CPU IdentifierSize Size Thr Rate (CPU%) LatencyLatency >2s >10sEff -- - --- -- -- - --- - 2.6.14.3-vs2.0.1 100 40961 418.79 96.48% 0.0060.02 0.0 0.0 434 2.6.14.3-vs2.0.1 100 40962 754.47 386.3% 0.0060.04 0.0 0.0 195 2.6.14.3-vs2.0.1 100 40964 839.15 1374.% 0.0100.05 0.0 0.061 2.6.14.3-vs2.0.1 100 40968 739.47 870.8% 0.0090.04 0.0 0.085 Sequential Writes File Blk Num Avg Maximum Lat% Lat%CPU IdentifierSize Size Thr Rate (CPU%) LatencyLatency >2s >10sEff -- - --- -- -- - --- - 2.6.14.3-vs2.0.1 100 409616.89 4.602% 0.0219.83 0.0 0.0 150 2.6.14.3-vs2.0.1 100 409629.12 15.32% 0.031 80.06 0.0 0.060 2.6.14.3-vs2.0.1 100 409649.65 52.36% 0.0400.54 0.0 0.018 2.6.14.3-vs2.0.1 100 409689.92 102.5% 0.066 100.08 0.0 0.010 Random Writes File Blk Num Avg Maximum Lat% Lat%CPU IdentifierSize Size Thr Rate (CPU%) LatencyLatency >2s >10sEff -- - --- -- -- - --- - 2.6.14.3-vs2.0.1 100 409610.34 0.148% 0.0100.03 0.0 0.0 230 2.6.14.3-vs2.0.1 100 409620.34 0.352% 0.0110.06 0.0 0.098 2.6.14.3-vs2.0.1 100 409640.37 1.033% 0.0170.07 0.0 0.036 2.6.14.3-vs2.0.1 100 409680.38 1.596% 0.0160.14 0.0 0.024 -- I'm wondering; shouldn't the CPU % be lower on reads? Is there a way to increase this performance? A. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Add IP to vserver
No, just these settings... On 5.5.2006, at 01:44, ehab heikal wrote: Did u need to change any settings in the vserver itself? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arnór Kristjánsson Sent: Friday, May 05, 2006 4:27 AM To: vserver@list.linux-vserver.org Subject: Re: [Vserver] Add IP to vserver What I did was to add files to /etc/vservers//interfaces dir; basically copying like so: cp -r /etc/vservers/ How do I add an IP to a vserver? I added 2 ips by editing the configuration of the vserver, but now these Ips are not accessible from computers outside my lan, as if they do not route right. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Add IP to vserver
from http://this.is/promazin/?p=page&ID=1 update Feb 06 2006 networking and mask settings It is extremely important to set the mask for every single host. I created severe problems on the network by using the default mask settings. ifconfig does not display this so I suggest the iproute package, including the lovable tool ip addr, use it to give you detailed information about your interfaces. The mask is set in the following manner echo 255.255.xxx.xxx > /etc/ vservers/vserver-name/interfaces/0/mask. You can also use a file called prefix and set the subnet there, for example echo 24 > /etc/vservers/vserver-name/interfaces/0/prefix Using the vserver command to create a new vserver. vserver build \ -n ltsp \ --hostname ltsp.domain.com \ --interface vlan10:172.201.222.10 \ -m debootstrap -- -d sarge On 5.5.2006, at 01:30, ehab heikal wrote: I did that but the ips are only accessible from our LAN and do not route. These IP are routable since I was using them on another server in the same datacenter so the Ips them selves have no problems and they have the same gateway etc. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arnór Kristjánsson Sent: Friday, May 05, 2006 4:27 AM To: vserver@list.linux-vserver.org Subject: Re: [Vserver] Add IP to vserver What I did was to add files to /etc/vservers//interfaces dir; basically copying like so: cp -r /etc/vservers/ How do I add an IP to a vserver? I added 2 ips by editing the configuration of the vserver, but now these Ips are not accessible from computers outside my lan, as if they do not route right. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] Add IP to vserver
What I did was to add files to /etc/vservers//interfaces dir; basically copying like so: cp -r /etc/vservers/ and then editing the ip and mask files in "1". Some of my servers have 4 different ips set up this way. HTH, A. On 5.5.2006, at 00:54, ehab heikal wrote: How do I add an IP to a vserver? I added 2 ips by editing the configuration of the vserver, but now these Ips are not accessible from computers outside my lan, as if they do not route right. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] libsensors3 and capabilities
Hi, I'm trying to install jffnms inside a debian etch vserver guest (my test box). dpkg-reconfigure libsensors3 tells me that the kernel isn't compiled with sensors support, but I'd swear it is there. I got to thinking it was a capability thing. Can anyone point me in the right direction? A. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] libsensors3 and capabilites
Hi, I'm trying to install jffnms inside a debian etch vserver guest (my test box). dpkg-reconfigure libsensors3 tells me that the kernel isn't compiled with sensors support, but I'd swear it is there. I got to thinking it was a capability thing. Can anyone point me in the right direction? A. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] vlan
I used the guide available at: http://this.is/promazin/?p=page&ID=1 and it worked wonders for me. The only thing "not covered" (not implying that the guide should) is that Cisco uses VLAN1 for management and that VLAN should therefore not be tagged. I use VLAN1 for data (because of legacy reasons) and therefore had to change the config examples provided from: auto lo iface lo inet loopback auto eth0 vlan2 vlan10 vlan20 # iface eth has to be up with no ip number iface eth0 inet static address 0.0.0.0 netmask 0.0.0.0 vlan_raw_device eth0 iface vlan2 inet static address 172.201.221.17 netmask 255.255.255.224 gateway 172.201.221.17 vlan_raw_device eth0 ... -- to -- auto lo iface lo inet loopback auto eth0 vlan2 vlan10 vlan20 # iface eth has to be up with no ip number iface eth0 inet static address 0.0.0.0 netmask 0.0.0.0 vlan_raw_device eth0 iface vlan2 inet static address 172.201.221.17 netmask 255.255.255.224 gateway 172.201.221.17 vlan_raw_device eth0 iface vlan10 inet static address 172.201.222.4 netmask 255.255.254.0 gateway 172.201.222.1 vlan_raw_device eth0 iface vlan20 inet static address 192.168.1.254 netmask 255.255.255.0 gateway 192.168.1.1 vlan_raw_device eth0 --- to -- auto lo iface lo inet loopback auto eth0 vlan2 vlan10 vlan20 # iface eth has to be up with no ip number iface eth0 inet static address 172.201.221.17 netmask 255.255.255.224 gateway 172.201.221.17 iface vlan10 inet static address 172.201.222.4 netmask 255.255.254.0 gateway 172.201.222.1 vlan_raw_device eth0 iface vlan20 inet static address 192.168.1.254 netmask 255.255.255.0 gateway 192.168.1.1 vlan_raw_device eth0 -- and it worked wonderfully! Basically what this does is to define eth0 as a regular interface and the VLANx interfaces as VLANs on a raw_device... HTH A. On 28.3.2006, at 13:59, Chuck wrote: is there any in-depth guide/documentation to fully explain construction of vlans with respect to vservers? my boss now wants to change our "unique port" network vlan structure to multiple vlans on a single port. -- Chuck ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
