Hi, new here and need some help. Sometimes my site is extremely slow, if when there aren't too many people on, whereas when there are over 300 online members the site may be very fast. We use CentOS, PHP 5.26. The server has 4GB and Plesk usually shows about 2 or 3 GB free.
I believe I can see... (4 Replies)
I am running a Dell PE R815 with 4 x AMD 12 core CPUs with 128GB of RAM and a RAID 5 array of 6 SAS disks. This is an HPC application and is definitely CPU bound, however once I run 16 of these processes (thus pinning 16 cores) the work performed slows down dramatically, to maybe 5 or 10% of what... (2 Replies)
Hi Guys,
I need to write a script capable of identifying when a high cpu utilitzation process. It sounds simple but we are on a AIX 5.3 environment with Virtual CPU's (VP's) and logical CPU's. Please any ideas or tips would be highly appreciated. Thanks.
Harby. (6 Replies)
Hi All,
Yesterday my Linux server went panic and even a small command took a lot of time to run.
When i monitored pl find the below output
Cpu(s): 0.1%us, 98.4%sy, 0.0%ni, 1.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
the time spent on kernel mode is 98 % and also idle time is around 1.5 %...... (4 Replies)
Hi,
I can't seem to make sense of this. My wait time is showing really high but vmstat's and topas are showing normal usage.
ps aux
USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
root 9961810 5680.7 0.0 448 384 - A Dec 16 6703072:12 wait
... (2 Replies)
I have created one script and i have added it into cron to run after 10 mins. However I have noted that whenever that script runs, It causes CPU utilization of server to increase about 10-20 %
I have rechecked script and there is no way i can make changes, Script contain only 2-3 commands. So... (4 Replies)
HI
In my M5000 , one of domain is having SAp installed. from today onwards we are facing some stange issue.
when we start SAP application, that particular user is taking 95 % of system CP and renaming 5 % is taken by system . because of this reason application is slow.
i have 4 CPU(32... (4 Replies)
Hello.
In an informix context, on AIX 5.3 TL 12, we encounter this problem :
Sometimes in the day (probably when users exits from their session), a child process lose its parent (PPID is now "1") and this child is consumming lot of CPU "USER".
I tried, on different cases, "truss -p... (4 Replies)
Hi Fellas,
Not sure how I can dig in even further but we notice that one of our DB servers is showing high Sys% CPU usage even though when I execute the following command :
I can see that postgres is the only one using the CPU. So if anyone can advise me what would be the best way to... (3 Replies)
Discussion started by: arizah
3 Replies
LEARN ABOUT LINUX
disksup
disksup(3erl) Erlang Module Definition disksup(3erl)NAME
disksup - A Disk Supervisor Process
DESCRIPTION
disksup is a process which supervises the available disk space in the system. It is part of the OS_Mon application, see os_mon(7) . Avail-
able for Unix and Windows.
Periodically checks the disks. For each disk or partition which uses more than a certain amount of the available space, the alarm
{{disk_almost_full, MountedOn}, []} is set.
On Unix :
All (locally) mounted disks are checked, including the swap disk if it is present.
On WIN32 :
All logical drives of type "FIXED_DISK" are checked.
Alarms are reported to the SASL alarm handler, see alarm_handler(3erl) . To set an alarm, alarm_handler:set_alarm(Alarm) is called where
Alarm is the alarm specified above.
The alarms are cleared automatically when the alarm cause is no longer valid.
CONFIGURATION
The following configuration parameters can be used to change the default values for time interval and threshold:
disk_space_check_interval = int()>0 :
The time interval, in minutes, for the periodic disk space check. The default is 30 minutes.
disk_almost_full_threshold = float() :
The threshold, as percentage of total disk space, for how much disk can be utilized before the disk_almost_full alarm is set. The
default is 0.80 (80%).
See config(5) for information about how to change the value of configuration parameters.
EXPORTS
get_disk_data() -> [DiskData]
Types DiskData = {Id, KByte, Capacity}
Id = string()
KByte = int()
Capacity = int()
Returns the result of the latest disk check. Id is a string that identifies the disk or partition. KByte is the total size of the
disk or partition in kbytes. Capacity is the percentage of disk space used.
The function is asynchronous in the sense that it does not invoke a disk check, but returns the latest available value.
Returns [{"none",0,0}] if disksup is not available.
get_check_interval() -> MS
Types MS = int()
Returns the time interval, in milliseconds, for the periodic disk space check.
set_check_interval(Minutes) -> ok
Types Minutes = int()>=1
Changes the time interval, given in minutes, for the periodic disk space check.
The change will take effect after the next disk space check and is non-persist. That is, in case of a process restart, this value is
forgotten and the default value will be used. See Configuration above.
get_almost_full_threshold() -> Percent
Types Percent = int()
Returns the threshold, in percent, for disk space utilization.
set_almost_full_threshold(Float) -> ok
Types Float = float(), 0=<Float=<1
Changes the threshold, given as a float, for disk space utilization.
The change will take effect during the next disk space check and is non-persist. That is, in case of a process restart, this value
is forgotten and the default value will be used. See Configuration above.
SEE ALSO alarm_handler(3erl) , os_mon(3erl)Ericsson AB os_mon 2.2.5 disksup(3erl)