Displaying 20 results from an estimated 95 matches for "config_hz".
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config_h
2010 Sep 21
1
Questions about 1000HZ Kernel
Hello,
The XEN kernel in "XEN RELEASE-4.0.1" is shipped with the following
config parameters:
CONFIG_HZ_1000=y
CONFIG_HZ=1000
At many blogs and forums there is a discussion that the CONFIG_HZ
parameter should be changed to 250 HZ or 300 HZ.
We will operate a DomU and the Dom0 with the same 1000HZ Kernel. Is this
setup possible and recommended. How high is the performance cut-off?
Which option is m...
2007 Sep 20
1
A special kernel for linux as guest os
Dear Yagi-san,
> I heard from the horse's mouth that the CentOS team is working on the
> 100Hz centosplus kernel. I think your request triggered the action :-)
> They want make people happy.
That sounds nice!
This TIPS, CONFIG_HZ=100, is one of FAQs. It will make most of us happy.
Now we can get kernel-vm package on dev.centos.org.
Is it a test release of the special kernel?
I installed the kernel-vm. Its change-log shows HZ=100.
And the kernel seems better for clock interval on VMWare.
Thanks a lot.
Yuji
2013 Oct 02
2
Dahdi_dummy is more accurate than core timer?
Hi,
I have some servers that are dedicated to do meetme conferencing. From
some previous test i concluded that I need to use dahdi_dummy as it is
more accurate.
If I did use the core timers in dahdi (not loading dahdi_dummy) I got
bad quality in the conferences and dahdi_test showed 99.6% as worst.
I thought maybe the issue as bad hardware for the timing or something
else. But today I
2007 Oct 25
7
TC (HTB) doesn''t work well when network is congested?
Hi,
I have a server and ten clients in a Gigabit network. The server has
125mbps network bandwidth.
I want that the server has 40Mbps bandwidth reserved for client 1 (IP
192.168.5.141), and the
rest bandwidth is for all other clients.
My script looks like this (I use IFB for incoming traffic):
#!/bin/bash
export TC="/sbin/tc"
$TC qdisc add dev ifb0 root handle 1: htb default 30
2007 Aug 28
8
cpufreq affects rate in, at least, htb
Hi all :)
I''ve tested this and having a cpufreq that slows down the CPU
affects the rate of HTB. My ondemand cpufreq governor scales down the
CPU frequency about 40% and this is more or less the slowdown the rate
suffers, 40%.
Any known way of dealing with this without having to disable
cpufreq?
Thanks in advance :)
Ra?l N??ez de Arenas Coronado
--
Linux Registered
2006 Apr 15
13
htb overrate with 2.6.16
...th 2.6.10-1.771_FC2smp and stopped
working when I upgraded to 2.6.16-1.2069_FC4smp.
These are fedora kernels and the network controller is an Intel Gbit
(e1000) running a 100 Mbps Full Duplex.
Don''t know how or if this matters but the 2.6.10 kernel has
CONFIG_X86_HZ=1000 and the 2.6.16 has CONFIG_HZ=250
The idea is to just shape to , say 2Mbit, a certain kind of traffic
everything else should goes unshaped.
# tc qdisc add dev eth0 root handle 1: htb default 20
# tc class add dev eth0 parent 1: classid 1:2 htb rate 2Mbit
# tc qdisc add dev eth0 parent 1:2 sfq perturb 10
# tc filter add dev et...
2007 Jan 16
8
egress bandwidth not limited / limited extremely inaccurately
...roblems before I did that when the box was in a
private LAN)
The server details are:
(serenity:~) # uname -a89zx
Linux serenity 2.6.18-gentoo-r4 #1 SMP Mon Jan 15 12:33:56 CET 2007
x86_64 Intel(R) Pentium(R) D CPU 3.00GHz GenuineIntel GNU/Linux
(this is genkernel generated)
(serenity:~) # grep -i config_hz
/etc/kernels/kernel-config-x86_64-2.6.18-gentoo-r4
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
(serenity:~) # lspci | grep -i ether
05:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5714
Gigabit Ethernet (rev a3)
05:04.1 Ethernet controller: Br...
2009 Mar 10
1
Lenny how to compile new kernel
Hi!
I need to have a modified entry for CONFIG_HZ in the Dom-U kernel. I
installed Lenny, then installed the xen-enabled kernel
linux-image-2.6.26-1-xen-686 and also the sources (apt-get source
linux-image-2.6.26-1-xen-686). However, there is no .config file in this
package. So make menuconfig starts with the default values. However,
when I compil...
2006 Feb 09
0
[PATCH] remove x86_64 mach-xen/asm/param.h
...am.h
--- a/linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/param.h Thu Feb 9 20:25:33 2006 +0100
+++ /dev/null Thu Jan 1 00:00:00 1970 +0000
@@ -1,23 +0,0 @@
-#ifndef _ASMx86_64_PARAM_H
-#define _ASMx86_64_PARAM_H
-
-#ifdef __KERNEL__
-# include <linux/config.h>
-# define HZ CONFIG_HZ /* Internal kernel timer frequency */
-# define USER_HZ 100 /* .. some user interfaces are in "ticks */
-# define CLOCKS_PER_SEC (USER_HZ) /* like times() */
-#endif
-
-#ifndef HZ
-#define HZ 100
-#endif
-
-#define EXEC_PAGESIZE 4096
-
-#ifndef NOGROUP
-#define NOGROUP (-1)
-#endif
-...
2007 Sep 07
1
Centos 5 Xen Problem
Hi ,
I am using Centos 5 for virtualization , i have installed Centos 5 as Host OS and trying install Centos 5 as a guest OS but system is stuck at final screen
Starting Install process. This may take saveral minutes......
and its not doing anything else after that i am waiting for at leat 30-40 minutes.
Kernel and Hardware details are as follows:
Kernel
Linux xen 2.6.18-8.el5xen #1 SMP
2006 Oct 14
0
/proc/net/dev counters
...9060588 3458809975 0 0 0 0 0 0
eth0:2125601276 3324729816 3604 3441 3441 92 0 1347070 896165072 3458818569 0 0 0 0 0 0
2113352907-2107451373=5901534 (traffic on intefece about 40Mbit/s = 5MB/s) - seems good.
Both routers have CONFIG_HZ=1000, two cpus, and bofh are using
e1000/e100 driver with enabled NAPI.
Besides I''ve similar thing on laptop, 2.6.14 , Broadcom BCM4401-B0 nic (b44) :)
Why interface counters are increasing so slowy? this behavior can be
changed? or in other way this is normal behavior or some bug , fea...
2011 May 14
10
Asterisk-cpu utilization > 60 %
Hi,
On 64 bit centos 5.6 I have virtualbox 4 and 64 bit elastix latest.
Since yesterday cpu utilization has been constantly peaking 65-75%. Hardly
1-2 concurrent calls. No other activity on server. Top shows asterisk on
top.
Its quad xeon server with 4 gb ram.
Any suggestion where should I start and how should I go about with my
investigation.
Thank you and have a great weekend.
Sans
2010 Oct 16
0
RHEL 6 /etc/inittab misconfigured
...Y_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_HAVE_MLOCK=y
CONFIG_HAVE_MLOCKED_PAGE_BIT=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_HZ_250=y
CONFIG_HZ=250
CONFIG_PHYSICAL_START=0x1000000
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE=""
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ISA_DMA_API=y
CONFIG_BINFMT_ELF=y
CONFIG_NET=y
CONFIG_UNIX=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_...
2007 May 04
1
[PATCH 1/3] Documentation and example updates
...y, but usually it's easiest not to.
+
+ You will need to configure your kernel with the following options:
CONFIG_HIGHMEM64G=n ("High Memory Support" "64GB")[1]
CONFIG_TUN=y/m ("Universal TUN/TAP device driver support")
@@ -35,7 +38,8 @@ Running Lguest:
CONFIG_HZ=100 ("Timer frequency")[2]
- A tool called "lguest" is available in this directory: type "make"
- to build it.
+ to build it. If you didn't build your kernel in-tree, use "make
+ O=<builddir>".
- Create or find a root disk image. There ar...
2007 Jul 29
1
[PATCH] BLOCK=n , LGUEST=m/y compile error
...MENTAL=y ("Prompt for development and/or incomplete code/drivers")
CONFIG_PARAVIRT=y ("Paravirtualization support (EXPERIMENTAL)")
CONFIG_LGUEST=y/m ("Linux hypervisor example code")
+ CONFIG_BLOCK=y ("Enable the block layer")
and I recommend:
CONFIG_HZ=100 ("Timer frequency")[2]
diff --git a/drivers/lguest/Kconfig b/drivers/lguest/Kconfig
index 43d901f..4bc0577 100644
--- a/drivers/lguest/Kconfig
+++ b/drivers/lguest/Kconfig
@@ -1,6 +1,6 @@
config LGUEST
tristate "Linux hypervisor example code"
- depends on X86 && P...
2007 May 04
1
[PATCH 1/3] Documentation and example updates
...y, but usually it's easiest not to.
+
+ You will need to configure your kernel with the following options:
CONFIG_HIGHMEM64G=n ("High Memory Support" "64GB")[1]
CONFIG_TUN=y/m ("Universal TUN/TAP device driver support")
@@ -35,7 +38,8 @@ Running Lguest:
CONFIG_HZ=100 ("Timer frequency")[2]
- A tool called "lguest" is available in this directory: type "make"
- to build it.
+ to build it. If you didn't build your kernel in-tree, use "make
+ O=<builddir>".
- Create or find a root disk image. There ar...
2007 Jul 29
1
[PATCH] BLOCK=n , LGUEST=m/y compile error
...MENTAL=y ("Prompt for development and/or incomplete code/drivers")
CONFIG_PARAVIRT=y ("Paravirtualization support (EXPERIMENTAL)")
CONFIG_LGUEST=y/m ("Linux hypervisor example code")
+ CONFIG_BLOCK=y ("Enable the block layer")
and I recommend:
CONFIG_HZ=100 ("Timer frequency")[2]
diff --git a/drivers/lguest/Kconfig b/drivers/lguest/Kconfig
index 43d901f..4bc0577 100644
--- a/drivers/lguest/Kconfig
+++ b/drivers/lguest/Kconfig
@@ -1,6 +1,6 @@
config LGUEST
tristate "Linux hypervisor example code"
- depends on X86 && P...
2007 May 09
2
[PATCH 0/2 v05] lguest: TSC & hrtimers
The following patches are the latest update of the TSC and hrtimer patches
I posted on 29/03.
Rusty's original TSC patch has been resynced to the latest lguest repo,
as has the hrtimer patch, which also incorporates feedback from Jeremy &
Rusty:
- Change clock event hrtimer to absolute time. 'now' is captured in the
host during the hypercall.
- Propagate -ETIME back to the
2007 May 09
2
[PATCH 0/2 v05] lguest: TSC & hrtimers
The following patches are the latest update of the TSC and hrtimer patches
I posted on 29/03.
Rusty's original TSC patch has been resynced to the latest lguest repo,
as has the hrtimer patch, which also incorporates feedback from Jeremy &
Rusty:
- Change clock event hrtimer to absolute time. 'now' is captured in the
host during the hypercall.
- Propagate -ETIME back to the
2010 Dec 03
5
Linux DomU vs Bare Metal performance issues
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi, I''m trying to diagnose a reasonably large performance drop between
two ostensibly similar servers; one running CentOS 5.5 on bare metal,
the other running Fedora 14 as a Xen DomU under CentOS 5.5 (Xen
3.1.2-194.26.1.el5)
I have a pair of older Dell PowerEdge 1750 servers, each with 4GB ram
and 2x 2.4GHz Xeon CPU''s with