At $WORK we use a modification of DEVICE_POLLING instead of running
our NICs in interrupt mode. With the ULE scheduler we are seeing that
CPU utilization (e.g. in top -SH) is completely wrong: the polling
threads always end up being reported at a utilization of 0%.
I see problems both
On 18.07.2012 23:29, Ryan Stone wrote:
At $WORK we use a modification of DEVICE_POLLING instead of running
our NICs in interrupt mode. With the ULE scheduler we are seeing that
CPU utilization (e.g. in top -SH) is completely wrong: the polling
threads always end up being reported
On 19 Feb 2009, at 12:15 , Joseph Koshy wrote:
% pmccontrol -L
pmccontrol: Initialization of the pmc(3) library failed: No such
file or
directory.
Did you load hwpmc(4) into the kernel?
How can I check that? kldload pmc reports that pmc interface exists in
kernel.
pmc: Unknown Intel
Hi,
I would like to obtain fore mentioned data from within my module. I
need these performance metrics to see how certain code executes, and
make decisions during the runtime. pmc(3) seems complete, but it also
seems to be intended for use in the userland.
How to use pmc from modules? Is
to be intended for use in the userland.
How to use pmc from modules? Is there any other way? Also, module is
amd64 only, so I don't care about portability.
I'm not sure what you mean by module ini this context.
But CPU utilization my be found in the kern.cp_time sysctl value;
per-core
I would like to obtain fore mentioned data from within my module. I need
these performance metrics to see how certain code executes, and make
decisions during the runtime. pmc(3) seems complete, but it also seems to be
intended for use in the userland.
How to use pmc from modules? Is there
- Original Message
From: Won De Erick [EMAIL PROTECTED]
To: Jeremy Chadwick [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]; freebsd-hackers@freebsd.org
Sent: Sunday, November 16, 2008 7:18:46 PM
Subject: Re: NET.ISR and CPU utilization performance w/ HP DL 585 using
FreeBSD 7.1 Beta2
Won De Erick wrote:
I compiled the following em driver for Intel NIC Pro (82571) w/ FreeBSD 7.1
Beta 2 on HPDL 585 machine having 16CPUs.
http://people.yandex-team.ru/~wawa/
With net.isr.direct=1, I made some changes on kthreads(default=2) for em0 and
em1's rx.
dev.em.0.rx_kthreads:
- Original Message
From: Ivan Voras [EMAIL PROTECTED]
To: freebsd-hackers@freebsd.org
Sent: Tuesday, November 18, 2008 5:21:04 AM
Subject: Re: NET.ISR and CPU utilization performance w/ HP DL 585 using
FreeBSD 7.1 Beta2
Won De Erick wrote:
I compiled the following em
- Original Message
From: Jeremy Chadwick [EMAIL PROTECTED]
To: Won De Erick [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]; freebsd-hackers@freebsd.org
Sent: Saturday, November 15, 2008 10:16:31 PM
Subject: Re: NET.ISR and CPU utilization performance w/ HP DL 585 using
FreeBSD 7.1 Beta2
16K WAIT a 38:22 12.26% irq31: bce0
45 root1 -64- 0K16K WAIT 7 11:31 12.06% irq17: uhci0
47 root1 -64- 0K16K WAIT 6 1:54 3.66% irq16: ciss0
28 root1 -32- 0K16K WAIT 8 16:01 0.00% swi4: clock
sio
Overall CPU
root1 -32- 0K16K WAIT 8 16:01 0.00% swi4: clock
sio
Overall CPU utilization has significantly dropped, but I noticed that swi1
has taken CPU0 with high utilization when the net.isr.direct=0.
What does this mean?
SCENARIO B : Bombarded w/ more TCP traffic:
Worst
Hi Good Morning..
I want to calculate the CPU utilization in my DHCP server
implementation.
I am using C language on Solaris 9. Could any one please let me know
Is there any system call can do this?
Thanks in advance.
Regards,
Abdul Rasheed.
Confidentiality Notice
The information
In the last episode (Nov 10), [EMAIL PROTECTED] said:
Hi Good Morning..
I want to calculate the CPU utilization in my DHCP server
implementation.
I am using C language on Solaris 9. Could any one please let me know
Is there any system call can do this?
This is completely the wrong mailing
Hi,
i am looking for how to accurately calculate the CPU utilization per
process.
i have looked through the top sources, and found out it's using the kvm
lib, which isn't suitable for my purpose.
is there a way to accurately calculate %CPU based on information from the
struct proc ? it does
In the last episode (Feb 12), Nimnod said:
i am looking for how to accurately calculate the CPU utilization per
process. i have looked through the top sources, and found out it's
using the kvm lib, which isn't suitable for my purpose.
Why not? You don't need to be setuid root to call kvm
On Sat, 12 Feb 2005 14:16:51 -0600, Dan Nelson [EMAIL PROTECTED]
wrote:
In the last episode (Feb 12), Nimnod said:
i am looking for how to accurately calculate the CPU utilization per
process. i have looked through the top sources, and found out it's
using the kvm lib, which isn't suitable
I am running FreeBSd 4.2 on machine with 2 Pentium II CPU's
When I run "top", it shows my processes with 0.00% CPU
Are you by any chance running an Asus P2B-DS motherboard? There was
an issue with some versions of the BIOS for the motherboards not
initializing the Real time clock (as far as
I am running FreeBSd 4.2 on machine with 2 Pentium II CPU's
When I run "top", it shows my processes with 0.00% CPU
Is there a problem with top, or my machine??
last pid: 34959; load averages: 0.10, 0.06, 0.05up 8+05:27:27
21:05:14
41 processes: 1 running, 40 sleeping
CPU states: 0.0%
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