Rate limit - schedule not working

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AlanJS
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Rate limit - schedule not working

Post by AlanJS » Sat Feb 21, 2015 8:15 pm

The rate limit panel does not seem to function 100%.

Although setting an upload speed limit does work as expected, the schedule/interval settings have no effect.

We set a limit of 6MBps, and this upload limit is being enforced 24hrs, 7 days a week.

Currently I am having to change the upload limit manually every evening and morning, as the schedule fails to do anything.

I have attached pictures to show the schedule settings, and also a graph of the speed we achieve when manually removing the upload limit.

qpkg-glacier.jpg


rate-limit-schedule.jpg
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AlanJS
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Re: Rate limit - schedule not working

Post by AlanJS » Sat Feb 21, 2015 8:19 pm

I also did an inverted test with the schedule set to 7pm - 8am (instead of 8am - 7pm), but the upload speed stayed limited at 6MBps.

:cry:
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mardianto
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Re: Rate limit - schedule not working

Post by mardianto » Mon Mar 02, 2015 3:43 pm

Hi,

For backup/restore job average data transfer rate, you may want to check it from each jobs' [View Logs] -> [Status] tab -> "Average data transfer rate".
The upload/download speed under "Resource Monitor" in QTS Dashboard does not represent backup/restore job's average data transfer rate.
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AlanJS
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Re: Rate limit - schedule not working

Post by AlanJS » Mon Mar 02, 2015 9:22 pm

mardianto wrote:Hi,

For backup/restore job average data transfer rate, you may want to check it from each jobs' [View Logs] -> [Status] tab -> "Average data transfer rate".
The upload/download speed under "Resource Monitor" in QTS Dashboard does not represent backup/restore job's average data transfer rate.


Yep, I understand that.

The problem we're having is that the schedule never 'un-caps' the speed. It stays limited 24hrs 7days a week.
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AlanJS
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Re: Rate limit - schedule not working

Post by AlanJS » Wed Mar 04, 2015 2:26 am

I've done some further testing and I now understand the problem.

The schedule works, but the rate limit will only work for lower speeds.

The rate limit does not work with high-speed connections. We have 100Mbps & 1Gbps (upload to Glacier) connections for our QNAP servers.

If setting the rate limit higher than 5MBps (40 megabits/s) it does not work properly. The uploads will only go as fast as 5MBps.

So...
- If we set the the rate limit to unlimited, we achieve full upload speeds 100Mbps - 1Gbps
- If we enable the rate limit with an upload limit of 100MBps : during the rate limited schedule we see upload speeds of 5MBps :cry:
- If we enable the rate limit with an upload limit of 100MBps : outside of the rate limited schedule we see upload speeds of 5MBps :cry:
- If we enable the rate limit with an upload limit of 1MBps : during the rate limited schedule we see upload speeds of 1MBps
- If we enable the rate limit with an upload limit of 1MBps : outside of the rate limited schedule we see upload speeds of 5MBps :cry:


It seems like the rate limiting part of the app code has limitations on how fast it can deal with the data.
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AlanJS
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Re: Rate limit - schedule not working

Post by AlanJS » Wed Apr 08, 2015 6:05 am

I have been advised this will be fixed in CloudBackup Version 1.1.340 (to be released soon).

:ubergeek:
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paulchu
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Re: Rate limit - schedule not working

Post by paulchu » Mon Apr 20, 2015 7:50 am

Hi, we have addressed this issue in the released v1.1.340. The issue was when throughput was high, the rate limit did not catch up and thus slowed down the transfer. The algorithm has been slightly adjusted.
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jeffasweet
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Re: Rate limit - schedule not working

Post by jeffasweet » Wed Dec 05, 2018 3:23 pm

This issue still exists. If you select 'unlimited' it is fine, and if you put a rate limit and no schedule, it adheres to it some of the time, as soon as you apply a schedule, it breaks and the results are random. It pretty much makes throttling useless.

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