I am not that familiar with Linux - if this belongs in the 'Newbies' section, or anywhere else on this site, please move it there. I chose to post here because I am dealing with an issue between two versions of CentOS.
Recently, my boss has had me trying to build a new machine to use as a replacement device for our main system. I haven't had any problems installing anything, but on attempting to run an update against our database, we ran into a major slowdown relative to our other machine. (As in: A nightly update file, which normally takes ~20-30 minutes, takes between six and seven hours on the new machine when using the same upload process.) I am looking into the differences in the two versions of the database software, but given that I've tuned their config files as close to identically as possible I'm also trying to figure out where else the slowdown might be coming from, and am hoping that those here might be able to assist me in figuring out at least where to look next.
Old server:
Actual desktop device within our office.
Being loaded from Windows machine within our office.
'cat /etc/*-release' shows 'CentOS release 6.2 (Final)
Database software is Postgresql 8.4.9.
free results:
Code:
total used free shared buffers cached
Mem: 32586484 13285288 19301196 0 312600 11874580
-/+ buffers/cache: 1098108 31488376
Swap: 10010616 0 10010616
New server:
Virtual machine located in an offsite office.
Being loaded from Windows machine sitting in same offsite office.
'cat /etc/*-release' shows 'CentOS Linux release 7.2.1511 (Core)'
Database software is Postgresql 9.2.15
free results:
Code:
total used free shared buff/cache available
Mem: 32781448 377436 5725172 71660 26678840 31935344
Swap: 16515068 480 16514588
Again, I am not familiar with the inner workings of Linux. What are the best places to start looking for the source of this slowdown, and what do I need to be looking for when I get there to track the source of this problem down?