Attila console very slow


#1

I’ve noticed this for a long time, but I’ve never seen it mentioned. My host is Attila, and the responsiveness is usually very sluggish when logged in at the bash prompt. When it’s bad, I’ll type some characters and it sometimes takes 2-6 seconds before echoing them back to the console. When that happens, I’ll do a top, and see cpu between 30% and 82% or so. But I can only see my own account in top of course, so I can’t find out what process(es) is hogging the cpu. Any ideas?


#2

It’s likely someone else’s processes which you can’t view. Top also shows the server load in decimal format for the past minute, 5 min, and 15 min. What do those numbers show?

-Scott


#3

top - 23:27:39 up 73 days, 2 min, 1 user, load average: 3.82, 4.42, 4.80
Tasks: 2 total, 1 running, 1 sleeping, 0 stopped, 0 zombie
Cpu(s): 45.0% us, 10.5% sy, 0.3% ni, 41.8% id, 0.7% wa, 0.1% hi, 1.6% si
Mem: 4146516k total, 4022180k used, 124336k free, 133280k buffers
Swap: 6313512k total, 2668k used, 6310844k free, 1765300k cached


#4

Thanks Scott. Yeah I figured some other user’s process is eating the cpu. I hope the Top info helps.


#5

That load average of less than 5 really isn’t that bad. The CPU is at less than 60%, so maybe it’s something else.

How quick is your site when this is happening? Do you get quick terminal response at other times?

-Scott


#6

Slow response at terminal is most often an indication of network problems between the client and host. Next time you notice the problem do a traceroute to your server and if you’re getting drops at DH let Support know (send them the traceroute info).

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#7

I think when the console is as super slow as I reported before, my wifi router is having some lag problems.

Still though, the last few top listings are similar to below, and I’m thinking that 70-90% cpu usage is uncommonly high, isn’t it? Time to report to support?

top - 14:07:58 up 73 days, 14:42, 1 user, load average: 10.97, 9.24, 7.54
Tasks: 2 total, 1 running, 1 sleeping, 0 stopped, 0 zombie
Cpu(s): 86.6% us, 11.0% sy, 0.3% ni, 0.4% id, 0.0% wa, 0.2% hi, 1.5% si
Mem: 4146516k total, 4034828k used, 111688k free, 143668k buffers
Swap: 6313512k total, 2668k used, 6310844k free, 1697852k cached


#8

Personally, I consider loads over 10 warrant a note to Support.

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