Visit The New, Modern Unix Linux Community


ps showing inconsistent process start time


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting ps showing inconsistent process start time
# 1  
Question ps showing inconsistent process start time

Not sure if it makes a difference but "foo" is a java process. The start time reported by various flavors of ps seems to be flopping back and forth by a minute.

I have many (a few hundred) "foo" like processes which tend to be somewhat unstable and get restarted somewhat frequently, I wrote a script auditing each process and its startup time sticking it into a file and diffing it against the previous iteration of the same script, if they are different I send an email to inform the support team "hey foo restarted on this server". Naturally if a process flip flops like this I generate inaccurate emails.

Only a couple of processes show the below behavior I don't believe its related to the process but some oddity how ps works.

Anyone have an idea what the cause may be?

All the bellow are within a few seconds of each others:

Code:
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:21
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:21
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:21
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:20
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:20
[root@foo ~]# ps -e -www -o stime,cmd |grep foo|grep -v grep |awk '{print $NF,$1}'
foo 01:21

[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:20 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:20 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:20 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:21 foo
[root@foo ~]# ps -aef |grep foo|grep -v grep |awk '{print $5,$NF}'
01:20 foo

[root@foo ~]# ps auxwww |grep foo|grep -v grep |awk '{print $9,$NF}'
01:21 foo
[root@foo ~]# ps auxwww |grep foo|grep -v grep |awk '{print $9,$NF}'
01:21 foo
[root@foo ~]# ps auxwww |grep foo|grep -v grep |awk '{print $9,$NF}'
01:20 foo
[root@foo ~]# ps auxwww |grep foo|grep -v grep |awk '{print $9,$NF}'
01:20 foo
[root@foo ~]# ps auxwww |grep foo|grep -v grep |awk '{print $9,$NF}'
01:21 foo

[root@foo ~]# ps -aef |grep foo |grep -v grep|awk '{print $2}'
17857
[root@foo ~]# ls -l /proc/ |egrep 17857
dr-xr-xr-x   5 foo foo           0 Dec  2 01:20 17857

[root@dxpomsagt06 ~]# uname -a
Linux foo 2.6.9-89.ELsmp #1 SMP Mon Apr 20 10:33:05 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux


Last edited by pludi; 12-02-2009 at 01:48 PM.. Reason: code tags, please...
# 2  
i wonder, .... oh i am also able to see this time difference for my processes.

at different times, it flips by one minute ? does anybody know the reason ?

Code:
$ uname -a
Linux Aristo33 2.6.26-2-686 #1 SMP Fri Aug 14 01:27:18 UTC 2009 i686 GNU/Linux

# 3  
Well glad to see I am not alone. Anyone else have any thoughts / suggestions where to go from here?

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #255
Difficulty: Easy
The consumer version of Mac OS X was launched in 2001 with Mac OS X 10.0.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to calculate time difference between start and end time of a process!

Hello All, I have a problem calculating the time difference between start and end timings...! the timings are given by 24hr format.. Start Date : 08/05/10 12:55 End Date : 08/09/10 06:50 above values are in mm/dd/yy hh:mm format. Now the thing is, 7th(08/07/10) and... (16 Replies)
Discussion started by: smarty86
16 Replies

2. UNIX for Dummies Questions & Answers

how to get start time of a running process

I am trying to see if a process is running what was its start time. here is the code that I am using if then echo 'Gateway output processing started.' else VAR=$(ps -ef | grep batch_output_x ) ... fi now the problem i see is when the process is running i get two... (3 Replies)
Discussion started by: akabir77
3 Replies

3. Linux

Process start time not showing correct time

Process start time is not showing the correct time: I had started a process on Jun 17th at 23:30:00. Next day morning when I run the command "ps -ef | grep mq", the process is showing the start date of Jun 17th but the start time is 00:16:41 Day/Date is setup correctly on the server. It... (2 Replies)
Discussion started by: hemangjani
2 Replies

4. Solaris

How to get process start date and time in SOLARIS?

how can I get the process start date and time? using ps command i can get the timstamp for a process, which are started today. and only date (MMM DD) for others. i need to get both for all the running process. please help. Regards, Jagadeeswaran.K (7 Replies)
Discussion started by: Jagadeeswaran.K
7 Replies

5. HP-UX

HP UX start process at boot time

When I get start program at boot I read which run level /sbin/rcx.d runlevel=0.....x only read directory which directory name has UpperCase 'S' is not enough someone says that I need to reference another file which file I need to reference 1)/etc/rc.config.d/all file which parameter... (4 Replies)
Discussion started by: alert0919
4 Replies

6. UNIX for Dummies Questions & Answers

start process at assidned date and time

How can I start FTP at assigned DATE and TIME? (6 Replies)
Discussion started by: gd2003
6 Replies

7. UNIX for Advanced & Expert Users

start time of a terminated process

Hi, I have a shell script which i am running. I want it's starting time (the time when the execution of the shell script started) in another shell script. Note that the process has already terminated when i need it's starting time.... else i could have used ps -f | cut -d" " -f5... But that's... (2 Replies)
Discussion started by: k_chaaya
2 Replies

8. UNIX for Advanced & Expert Users

to get process start date and time

what is command to get same using ps with switch. I know process id, by specify process id. It should work on solaris and hp-ux I will be happy if for both different commands. (2 Replies)
Discussion started by: naeem ahmad
2 Replies

9. Programming

get process start time

Hi all, I like to know how can I get currenlty running process start time and date , I know only porcess id in solaris and hp-ux and what is command to get same using ps with switch. Thanks Naeem (1 Reply)
Discussion started by: naeem ahmad
1 Replies

10. UNIX for Advanced & Expert Users

start a process at boot up time

Hi, I have a program that check the IP address and automatic update it to the DNS server. I would like to run this program when the computer bootup after pppd get a connection. How do I add it to the init file. Does any one have any information of how to do it. I run a Linux Mandrake as a... (1 Reply)
Discussion started by: vtran4270
1 Replies

Featured Tech Videos