I wrote a simple program which does this:
gettimeofday
something (takes several seconds)
gettimeofday
print time elapsed
Several runs of the program take about the same time but the time
changes wildly when the executable is called differently.
---
./xx/xxx
5 s
xx/xxx
9 s
and similar. It
* Michal Mertl [EMAIL PROTECTED] [020203 08:17] wrote:
I wrote a simple program which does this:
gettimeofday
something (takes several seconds)
gettimeofday
print time elapsed
Several runs of the program take about the same time but the time
changes wildly when the executable is called
Hi,
On Sat, 2 Feb 2002 02:49:49 +0100
Marco Wertejuk [EMAIL PROTECTED] said:
wertejuk I was really nerved when I noticed that rtadvd is exiting
wertejuk without any notice if the host is not an ipv6 gateway.
wertejuk Since it took me a lot of time to find this problem
wertejuk I wrote a
Several runs of the program take about the same time but the time
changes wildly when the executable is called differently.
---
./xx/xxx
5 s
xx/xxx
9 s
snip
The only thing which I can think of that can be causing this is some
memory alignment issue.
it could also be the
On Sat, Feb 02, 2002 at 11:54:17PM -0800, David Greenman wrote:
Oh what a tangled web we weave. This should be really easy for people
to take a quick look at to see if I made any mistakes. I'm basically
untangling the (small) mess that people made of the code while trying to
On Sun, 3 Feb 2002 08:59:41 -0800
Alfred Perlstein [EMAIL PROTECTED] wrote:
Hi,
It sure looks like an alignment issue. If you print the address
of 'i' and 'j' in the attached program you can see for the fast
case they are aligned to 8 byte boundries, but when it's slow they
are at an
In the last episode (Feb 03), Alfred Perlstein said:
* Michal Mertl [EMAIL PROTECTED] [020203 08:17] wrote:
Several runs of the program take about the same time but the time
changes wildly when the executable is called differently.
The only thing which I can think of that can be causing
In message [EMAIL PROTECTED], Dan Nelson cleopede:
In the last episode (Feb 03), Alfred Perlstein said:
* Michal Mertl [EMAIL PROTECTED] [020203 08:17] wrote:
Not really sure what to make of this, anyone else know how we ought
to fix this?
This has actually been an issue for ages, most
Hey.
For example i cantrol fchflags syscall via my kernel module.
I got:
int
n_fchflags(register struct proc *p, register struct fchflags_args)
{
...
}
struct fchflags_args {
int fd;
int flags;
};
I can get vnode of changed file.
I can get inode number of changed file.
Mike Makonnen [EMAIL PROTECTED] writes:
On Sun, 3 Feb 2002 02:35:46 +0400
Gaspar Chilingarov [EMAIL PROTECTED] wrote:
I've got such situation on our free shellbox set up in the
university - some newbies were kidding with old while(1) fork();
attack.
On Sun, 3 Feb 2002, Mike Barcroft wrote:
This means less work for you, and no need to continuously maintain diffs
against the kernel sources. IMO it's a *very,very* bad thing to
introduce changes into the kernel that might introduce unintended side
effects when the problem can be solved
On Sun, 3 Feb 2002, Robert Watson wrote:
BTW, many sites find the per-uid process limits helpful in preventing fork
bombs from crippling the site. The default configuration may not be
sufficiently agressive, and while it's not the same as a rate limit, it
does have the effect of topping
On Fri, 1 Feb 2002, Luigi Rizzo wrote:
HZ also has an impact on select() behaviour when timeouts are
used (and device drivers using timeouts as well).
A lot of software uses select() with a very short timeout which
is usually rounded up to the next tick. If the author of the software
is
On Fri, 1 Feb 2002, Terry Lambert wrote:
I guess you are talking the LRP stuff.
I was just talking about the processing at NETISR as a
result of a higher HZ causing a higher softintr run
frequency.
Interesting; I hadn't considered that scheduling could have an effect on
performance, but
Hello,
can anyone give an idea of C code on how to quickly count
the number of processes for a given user? I want to patch
Apache in order to prevent it from forking new process
over user's maxproc limit (while running suexec).
Should I look at ps(1) source code or there are some
other
On Sun, 3 Feb 2002 18:02:13 -0500
Mike Barcroft [EMAIL PROTECTED] wrote:
He should be able to pick his own administrative policy.
And what I pointed out was simply another choice. Whether he implements
the solution in software or takes the administrative route is obviously
his choice. And if
On Sun, Feb 03, 2002 at 10:11:37PM +0100, Pawe Jakub Dawidek wrote:
+ But how can i get file name?
+
[...]
+ I got file name, but how can I get full path name for this file?
+
Answer that there is no way to get that will be nice too.
--
Pawe Jakub Dawidek
Network Administrator.
Am I Evil?
On 10:11+0300, Feb 4, 2002, Magdalinin Kirill wrote:
Hello,
can anyone give an idea of C code on how to quickly count
the number of processes for a given user? I want to patch
Apache in order to prevent it from forking new process
over user's maxproc limit (while running suexec).
Should
* Pawel Jakub Dawidek [EMAIL PROTECTED] [020203 23:49] wrote:
On Sun, Feb 03, 2002 at 10:11:37PM +0100, Pawel Jakub Dawidek wrote:
+ But how can i get file name?
+
[...]
+ I got file name, but how can I get full path name for this file?
+
Answer that there is no way to get that will be
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