Two more spikes over the course of the past 12 hours, none of which show any correlation to an increase the number of bots; however, that does not say anything about the velocity of bots hitting the site. However, there is no correlation (over the last 12 hours and with two spikes recorded) with an increased overall number of bots. In addition, there is no correlation to increase network I/0.
The only consistent correlation so far is:
The one minute load average spike.
The increase in the total number of apache2 processes.
The increase in the total percentage of apache2 CPU % recorded.
There is weak, but inconsistent, correlation with:
An increase in the number of bots on the site .
An increase in the overall MySQL CPU percent.
There is no correlation, weak or otherwise to:
An increase in network I/O.
Any application cron activity.
Any system cron activity.
Any system disk I/O errors or anomalies.
So, as a sanity check, I have disabled apache2 mod pagespeed (just now) to see if there is any effect at all.
This is just a "shot in the dark" (disabling mod pagespeed), but at least we will know something. If the spikes continue, I will turn it back on, of course.
we have an unix system which has
load average normally about 20.
but while i am running a particular unix batch which performs heavy
operations on filesystem and database average load
reduces to 15.
how can we explain this situation?
while running that batch idle cpu time is about %60-65... (0 Replies)
Hello all, I have a question about load averages.
I've read the man pages for the uptime and w command for two or three different flavors of Unix (Red Hat, Tru64, Solaris). All of them agree that in the output of the 2 aforementioned commands, you are given the load average for the box, but... (3 Replies)
Hello, Here is the output of top command. My understanding here is,
the load average 0.03 in last 1 min, 0.02 is in last 5 min, 0.00 is in last 15 min.
By seeing this load average, When can we say that, the system load averge is too high?
When can we say that, load average is medium/low??... (8 Replies)
Hi,
i have installed solaris 10 on t-5120 sparc enterprise.
I am little surprised to see load average of 2 or around on this OS.
when checked with ps command following process is using highest CPU. looks like it is running for long time and does not want to stop, but I do not know... (5 Replies)
Hello AlL,..
I want from experts to help me as my load average is increased and i dont know where is the problem !!
this is my top result :
root@a4s # top
top - 11:30:38 up 40 min, 1 user, load average: 3.06, 2.49, 4.66
Mem: 8168788k total, 2889596k used, 5279192k free, 47792k... (3 Replies)
Hi ,
I am using 48 CPU sunOS server at my work.
The application has facility to check the current load average before starting a new process to control the load.
Right now it is configured as 48. So it does mean that each CPU can take maximum one proces and no processe is waiting.
... (2 Replies)
Hi,
I am getting a high load average, around 7, once an hour. It last for about 4 minutes and makes things fairly unusable for this time.
How do I find out what is using this. Looking at top the only thing running at the time is md5sum.
I have looked at the crontab and there is nothing... (10 Replies)
Here we go....
Preface:
..... so in a galaxy far, far, far away from commercial, data sharing corporations.....
For this project, I used the ESP-WROOM-32 as an MQTT (publish / subscribe) client which receives Linux server "load averages" as messages published as MQTT pub/sub messages.... (6 Replies)
Discussion started by: Neo
6 Replies
LEARN ABOUT OPENSOLARIS
mlib_signalautocorrel_f32
mlib_SignalAutoCorrel_S16(3MLIB) mediaLib Library Functions mlib_SignalAutoCorrel_S16(3MLIB)NAME
mlib_SignalAutoCorrel_S16, mlib_SignalAutoCorrel_S16S, mlib_SignalAutoCorrel_F32, mlib_SignalAutoCorrel_F32S - signal auto-correlation
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_SignalAutoCorrel_S16(mlib_d64 *correl,
const mlib_s16 *src, mlib_s32 disp, mlib_s32 n);
mlib_status mlib_SignalAutoCorrel_S16S(mlib_d64 *correl,
const mlib_s16 *src, mlib_s32 disp, mlib_s32 n);
mlib_status mlib_SignalAutoCorrel_F32(mlib_d64 *correl,
const mlib_f32 *src, mlib_s32 disp, mlib_s32 n);
mlib_status mlib_SignalAutoCorrel_F32S(mlib_d64 *correl,
const mlib_f32 *src, mlib_s32 disp, mlib_s32 n);
DESCRIPTION
Each of these functions performs auto-correlation.
For monaural signals, the following equation is used:
1 n-d-1
correl[0] = ----- * SUM (src[i] * src[i + d])
n - d i=0
For stereo signals, the following equation is used:
1 n-d-1
correl[0] = ----- * SUM (src[2*i] * src[2*(i + d)])
n - d i=0
1 n-d-1
correl[1] = ----- * SUM (src[2*i + 1] * src[2*(i + d) + 1])
n - d i=0
where d = disp.
PARAMETERS
Each of the functions takes the following arguments:
correl Pointer to the auto-correlation array. In the stereo version, correl[0] contains the auto-correlation of channel 0, and correl[1]
contains the auto-correlation of channel 1.
src Source signal array.
disp Displacement. 0 <= disp < n.
n Number of samples in the source signal array.
RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO mlib_SignalCrossCorrel_S16(3MLIB), attributes(5)SunOS 5.11 2 Mar 2007 mlib_SignalAutoCorrel_S16(3MLIB)