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1
vote
1answer
278 views

Rule of thumb to compare number of context switches on Linux and Windows

I am looking for a rough value to compare context switches between Windows and Linux (same hardware and similar load assumed). I found that Windows seems to have a smaller range of timeslice lengths ...
0
votes
0answers
135 views

Finding context switches count and run queue wait time for a process

I am observing (based on logs) that my (java) process pauses for something during execution. My first guess is a context switch. In order to verify I am trying to find (a) the number of involuntary ...
2
votes
2answers
544 views

My linux server “Number of processes created” and “Context switches” are growing incredibly fast

I have a strange behaviour in my server :-/. Is a OpenVZ VPS (I think is OpenVZ, because /proc/user_beancounters exists and df -h returns /dev/simfs drive. Also ifconfig returns venet0). When I do cat ...
0
votes
3answers
766 views

CPU context switch per/second increasing with network traffic increasing

I have server with ubuntu server operation system, i have some applications on it which works with network. With an increase in network traffic, CPU context swithching and interrupts are also ...
0
votes
3answers
657 views

More interruptions than cpu context switches

I have a machine running Debian GNU/Linux 5.0.8 (lenny) 8 cores and 12Gb of RAM. We have one core permanently around 40% ~ 60% wait time and trying to spot what is happening I realized that we have ...
2
votes
1answer
520 views

High context switches on SQL Server box

We have a server with 2 quad xeon 5550 processors. The only application installed on the server is SQL server. CPU usage rarely goes above 40%, and the transaction rate is 2,000 transactions per ...
5
votes
4answers
11k views

Find out which task is generating a lot of context switches on linux

According to vmstat, my Linux server (2xCore2 Duo 2.5 GHz) is constantly doing around 20k context switches per second. # vmstat 3 procs -----------memory---------- ---swap-- -----io---- -system-- ...
1
vote
1answer
304 views

number of context switches

I've got munin monitoring virtual private server. And here're graphs for context switches: By day: http://imgur.com/ljon5.gif What could have caused this? I'm not worried about the pike, because it ...
1
vote
3answers
3k views

cause for high Interrupts and context switches

Hey guys, I have a quad core and I have spotted on munin (monitoring interrupts and context switches), that my interrupts and context switches spiked to 25k a second while the average was 250 for some ...
16
votes
5answers
30k views

How many Context Switches is “normal” (as a function of CPU cores (or other))?

Do any of you have a rule of thumb as to how many context switches (per processor core) is Normal on a Linux server? My college here brought it up, and he's seeing 16K on a 8-core x86_64 machine. ...