Htop is very very slow if 3proxy is up and running under heavy load
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Tun Broker
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Hi Tun,
On Wed, Mar 23, 2022 at 5:49 AM Tun Broker <tunbroker.io@...> wrote: > [...] > htop is very very slow if 3proxy is up and running under heavy load . > if 3proxy is stopped , htop take 1 seconds and refresh faster . > if 3proxy is up under high load , htop take 40 seconds to work and slower refresh time . I have 3proxy installed here but I don't use it myself - is there a workload you can recommend to reproduce this? Alternatively, you might be able to gain some insight into where time is being spent from a quick 'perf top' run. Also, what version of htop are you running there at the moment? cheers. -- Nathan
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Tun Broker
Yes , If no load , all is good . The issue only happen when the load is hit on 3proxy .
Once 3proxy is hit with network load , I see htop , iftop , iotp ---- All those tools become very slow and take like 1 min to start with high refresh rate . So the tools similar to htop also affected too .
But when htop is opened after the long time . I see 3proxy services take 9600 CPU % which is a very high number and not accurate or not real .
The server is stable , only htop/ other tools above are affected .
I have attached a screenshot Hope it simplify the problem ,
Thanks
From:
htop@groups.io <htop@groups.io> on behalf of Nathan Scott <scott.nato@...> Hi Tun,
On Wed, Mar 23, 2022 at 5:49 AM Tun Broker <tunbroker.io@...> wrote:
> [...] > htop is very very slow if 3proxy is up and running under heavy load . > if 3proxy is stopped , htop take 1 seconds and refresh faster . > if 3proxy is up under high load , htop take 40 seconds to work and slower refresh time .
I have 3proxy installed here but I don't use it myself - is there a workload you can recommend to reproduce this? Alternatively, you might be able to gain some insight into where time is being spent from a quick 'perf top' run.
Also, what version of htop are you running there at the moment?
cheers.
-- Nathan
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Hi Tun, Your system has 96 CPUs. Looks like proxy3 is using 100% of every single one of them (96 * 100% => 9600%) all of the time. I'd be a little wary of the values shown in the per-CPU bars in this situation since htop is unlikely to be able to complete a sample in the sampling time allotted, hence that data is possibly being calculated incorrectly (change in value over change in time - time is advancing but the values are probably not reliably) You probably need to set aside at least a CPU or two for admin tools like htop - it looks like currently your system is over-subscribed if you want to run admin tools as well as proxy3. What did 'perf top' say? cheers.
On Wed, Mar 23, 2022 at 10:25 AM Tun Broker <tunbroker.io@...> wrote:
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Tun Broker
Hello , I confirm the server is stable . “Wrong htop records” Per screenshot the load average is not Full on the server .
I attached , the perf top :
Regards , Daniel .
From:
htop@groups.io <htop@groups.io> on behalf of Nathan Scott <scott.nato@...> Hi Tun,
Your system has 96 CPUs. Looks like proxy3 is using 100% of every single one of them (96 * 100% => 9600%) all of the time. I'd be a little wary of the values shown in the per-CPU bars in this situation since htop is unlikely to be able to complete a sample in the sampling time allotted, hence that data is possibly being calculated incorrectly (change in value over change in time - time is advancing but the values are probably not reliably)
You probably need to set aside at least a CPU or two for admin tools like htop - it looks like currently your system is over-subscribed if you want to run admin tools as well as proxy3.
What did 'perf top' say?
cheers.
On Wed, Mar 23, 2022 at 10:25 AM Tun Broker <tunbroker.io@...> wrote:
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Hi there, Sum the percentage values in the left-most column of your perf top output - this again suggests your machine is 100% CPU bound. You'll need to look into that (there's alot of clues for you in the perf top output) - this isn't a htop problem though IMO. htop is doing the best it can to keep up, given very little resources to work with. cheers.
On Wed, Mar 23, 2022 at 11:16 AM Tun Broker <tunbroker.io@...> wrote:
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Tun Broker
Thank you , I know it’s not HTOP problem . AS I said its only an issue when 3proxy is up and under traffic .
Thanks for your trial and help .
From:
htop@groups.io <htop@groups.io> on behalf of Nathan Scott <scott.nato@...> Hi there,
Sum the percentage values in the left-most column of your perf top output - this again suggests your machine is 100% CPU bound. You'll need to look into that (there's alot of clues for you in the perf top output) - this isn't a htop problem though IMO. htop is doing the best it can to keep up, given very little resources to work with.
cheers.
On Wed, Mar 23, 2022 at 11:16 AM Tun Broker <tunbroker.io@...> wrote:
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