0
votes
0answers
11 views

sar -b reports much too high statistics, are the I/O counted twice?

On a Linux server sar -b reports much too high read block statistics, sometimes 3.500.000 readb/s peak and around 2.500.000 readb/s sustain, which makes more that 1 gigabyte/s (according to the sar ...
0
votes
2answers
84 views

How to Change sysstat/sar logging folder

I have just enabled sysstat on one of my servers (Ubuntu 12.04), I have noticed it is logging all to /var/log/sysstat/sa04 /var/log/sysstat/sa05 /var/log/sysstat/sar04 How can I change the sysstat ...
1
vote
1answer
414 views

opening sar activity files error “Invalid system activity file”

Note: I opened this question on Stackoverflow first and realized that this is the right place for the question. Just stating that it is not a duplicate, already closed the question on SO. I am new ...
0
votes
1answer
202 views

report per-process IO stats with pidstat or sar

I'm trying to track io usage of a few "suspect" processes over time. Ideally would like to make those stats available via munin, or push directly to graphite. However, as a starting point it would be ...
0
votes
0answers
15 views

Linux Memory utilization? [duplicate]

Actually I use Linux centOS 6.2 version. recently I am assigned to monitor system utilization like memory,cpu,IO,network and all the stuffs. To perform this I have enabled SAR using systat and it ...
1
vote
0answers
108 views

Why are pgpgin/s and majflt/s inconsistent in sar -B?

In sar -B ouptut, I would naively expect pgpgin/s to equal majflt/s multiplied by the system page size. From man sar: pgpgin/s Total number of kilobytes the system paged in ...
5
votes
2answers
1k views

Relation between disk IOPS and sar tps

I'm trying to estimate IOPS requirements of my application running on 32-bit CentOS 6.2. I started to take some measurement on a machine with SATA disks and I'm quite confused of difference between ...
0
votes
1answer
96 views

How to track down sudden increase in process numbers (linux)

I find it pretty common for a Linux server to slow down to the point of complete unresponsiveness (LA 150+ etc), which when looking at it later using sar or munin or whatever it will show a sudden ...
1
vote
3answers
1k views

High await in sar

My database server has the following sar output for the data device: [postgres@dbsrv07 ~]$ LC_ALL=POSIX sar -d |egrep "await|dev253-2" 00:00:01 DEV tps rd_sec/s wr_sec/s avgrq-sz ...
1
vote
2answers
390 views

Linux SAR/SAT Daily Reports to store more than a month?

I'm on RHEL. How can i extend the log interval of SAR Reports to be more then a month? Normally the daily SAR reports are something like: [root@server /]# cat /var/log/sa/sa sa01 sa21 sa23 ...
1
vote
1answer
130 views

Measuring custom statistics with sar

I have a server application which I think is leaking file handles. I want to track the usage of file descriptors over time on my Linux (ubuntu) server. I've figured out that I can track the number ...
1
vote
1answer
721 views

sa2 -A /var/log/sa/sa13: No such file or directory

I have systat version 7.0.2 and the /etc/sysconfig/sysstat has the entry HISTORY=27, this is on a redhat enterprise server 5.6, the cron setup for this is # run system activity accounting tool every ...
0
votes
1answer
1k views

Sar: what does totsck stand for

I'm looking for an explanation of the totsck column for the "sar -n SOCK" output 09:44:06 PM totsck tcpsck udpsck rawsck ip-frag tcp-tw 09:44:09 PM 580 18 5 ...
2
votes
2answers
511 views

sar command to generate only CPU utilization and network statistics in Linux

I want to be able to generate the system activity report every 30 seconds or every minute and store in a file and use it for diagnostic purposes on my VM. So I give an output file for the sar command ...
1
vote
1answer
601 views

top command indicates a different cpu usage than sar command

In my CentOS server, when I check the resources with sar command, user cpu usage is around %15 while in top command the sole 'java' process uses like %99 of cpu. sometimes it's even goes further than ...
3
votes
1answer
6k views

What does the fields in sar -B output mean?

The sar manpage says : pgpgin/s - Total number of kilobytes the system paged in from disk per second. pgpgout/s - Total number of kilobytes the system paged out to disk per second. fault/s ...
2
votes
1answer
712 views

Tool to show summarized cpu usage per user

I once saw report that contained information, that within given time frame, total number of x cpu minutes, were used, and this was: - afterwards was list of uids (or usernames), and total number of ...
5
votes
2answers
3k views

How do I see what's in the run queue on GNU/Linux?

The load on my server is very high, even though there doesn't seem to be much disk activity and the CPU is idle. Using sar, I can see the run queue is getting full, but is there any way to see what's ...