Just for Info, you should take a look to the "tuned" daemon and setting a consistent profile for your workload. It can help a lot.
Best 2013/4/19, Saša-Stjepan Bakša <ssba...@gmail.com>: > Ok. I see your point and lesson is learned. Will do as suggested. > > > On Fri, Apr 19, 2013 at 6:07 PM, Howard Chu <h...@symas.com> wrote: > >> >> >>> >> You really need to learn something more about system administration; you >> clearly don't know what to investigate but this is all fundamental >> sysadmin >> knowledge. >> >> First things first - when something is "slow" - what exactly is slow? Is >> it using excessive CPU time? Is it waiting for disk I/O? Every sysadmin >> should automatically ask this question first of all, and every sysadmin >> should know how to tell the difference. If you don't know these things >> then >> you are not qualified to be a sysadmin and need to go get training. This >> is >> not the forum for teaching you these things. >> >> Copy/pasting someone else's VM tuning settings without understanding what >> they mean or why they are being set is "cargo cult sysadmin". It is wrong >> and nobody on this list / in this community should be encouraging it. >> Quick >> easy spoonfed answers don't actually help understanding, and >> understanding >> is the only real way forward. >> >> In particular, VM tuning settings are highly OS dependent, and probably >> kernel version dependent too. Good settings depend on exactly what your >> own >> system contains; settings that work for someone else may be useless or >> worse on your own setup. >> >> Simple answers have narrow relevance that gets obsolete quickly. Learning >> how to think and investigate problems is knowledge that serves you the >> rest >> of your life. >> >> As a starting point - what does vmstat tell you? Don't just paste its >> output here, learn what it means. >> >> >> -- >> -- Howard Chu >> CTO, Symas Corp. http://www.symas.com >> Director, Highland Sun http://highlandsun.com/hyc/ >> Chief Architect, OpenLDAP >> http://www.openldap.org/**project/<http://www.openldap.org/project/> >> > -- Inviato dal mio dispositivo mobile