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Author Topic: Very big files make amule very unresponsive  (Read 8867 times)

chemical

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Very big files make amule very unresponsive
« on: June 18, 2007, 10:59:11 AM »
Hi Guys,

I'm very happy with amule since a long time. I'm long time user of different CVS versions, now I'm with 20070522.

On Saturday it happened that I added a very big link via amulecmd to my amuled (8543305728 Bytes), which it happily accepted. However, a little bit later I noticed that something is very different than before: My router is having a very hard time supporting amuled since then. The load exploded from 0.4 to 2.5 (steady level) from the time I added the big link.

The core literally _lags_ as I _never_ experienced before. My Win32 GUI isn't able to connect at all or it takes about 1 minute. The connect from amulecmd needs about 30 seconds, every command lags about 20 seconds. This _never_ happened in any time.

It wouldn't get further than about 32% of the link (I suspect problems with these big files).

Another evidence for a problem is the "Operation is successful."-answer if I keep "add ed2k://" adding the link via amulecmd. It doesn't recognize the link as being on the list.

I downloaded files >4GB before, so this worked fine for me. But this is the first file I download which is even bigger.

Once I cancel the download of that file, everything goes INSTANTLY back to common behaviour. This is reproducable.

I some dev really wants to investigate into this issue :-) I'm happily willing to share the link.

THANKS
chemical
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chemical

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Re: Very big files make amule very unresponsive
« Reply #1 on: June 19, 2007, 02:50:36 PM »
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wuischke

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Re: Very big files make amule very unresponsive
« Reply #2 on: June 19, 2007, 03:39:58 PM »
Give me the link, please, I want to play around with it as well...
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skolnick

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Re: Very big files make amule very unresponsive
« Reply #3 on: June 19, 2007, 04:47:35 PM »
I think I have hit the same bug. I downloaded a file like 8.5GB in size, and aMule was very slow while getting it. But since this PC is so damn slow, I though it was normal :P

Regards.
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Kry

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Re: Very big files make amule very unresponsive
« Reply #4 on: June 19, 2007, 04:50:30 PM »
Send me the link in PM as well.
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reise

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Re: Very big files make amule very unresponsive
« Reply #5 on: June 23, 2007, 12:03:39 AM »
I'm using aMule-CVS-20070619 and I'm still having this problem. The amulecmd and webserver are super-slow.

I don't know how to get the link to send you. If it's aof any use the hash is BCF847313425002ED602CA8E931C15E4.
« Last Edit: June 23, 2007, 12:06:04 AM by reise »
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chemical

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Re: Very big files make amule very unresponsive
« Reply #6 on: June 28, 2007, 04:16:57 PM »
Yes, thats the hash of the link. If you need the exact link, ping me.

Were you able to reproduce it?
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reise

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Re: Very big files make amule very unresponsive
« Reply #7 on: June 28, 2007, 05:08:43 PM »
Quote from: chemical on June 28, 2007, 04:16:57 PM
Yes, thats the hash of the link. If you need the exact link, ping me.

Were you able to reproduce it?
This was directed to me or to the devs? In my linux the cpu is at 100% when I put this file downloading...
It's strange that no one noticed this before, don't you think?
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wuischke

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Re: Very big files make amule very unresponsive
« Reply #8 on: June 28, 2007, 06:17:52 PM »
The file is in mdf-format, isn't it? (Just to confirm I got the right file.)

Quote
Another evidence for a problem is the "Operation is successful."-answer if I keep "add ed2k://" adding the link via amulecmd. It doesn't recognize the link as being on the list.
This is the correct behaviour, the same happened when I tried to add another link multiple times.

When adding this file to aMule (current snapshot) I encountered no problems. The router load (linksys wrt54g v3.1) was 0.0 and the cpu load of amule didn't increase noticeably either.
I've finished about 2% of the file until now and I'll leave it running a bit longer, but I think that's no issue with aMule (monolithic).
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reise

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Re: Very big files make amule very unresponsive
« Reply #9 on: June 28, 2007, 10:40:45 PM »
Quote from: wuischke on June 28, 2007, 06:17:52 PM
The file is in mdf-format, isn't it? (Just to confirm I got the right file.)

Quote
Another evidence for a problem is the "Operation is successful."-answer if I keep "add ed2k://" adding the link via amulecmd. It doesn't recognize the link as being on the list.
This is the correct behaviour, the same happened when I tried to add another link multiple times.

When adding this file to aMule (current snapshot) I encountered no problems. The router load (linksys wrt54g v3.1) was 0.0 and the cpu load of amule didn't increase noticeably either.
I've finished about 2% of the file until now and I'll leave it running a bit longer, but I think that's no issue with aMule (monolithic).

Correct, its a mdf image.

I'm sorry but I didn't understand waht do you mean by the last phrase "I think that's no issue with aMule (monolithic)", you don't have the problem of 100% cpu usage?
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wuischke

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Re: Very big files make amule very unresponsive
« Reply #10 on: June 29, 2007, 05:48:28 AM »
aMule (monolithic) - the aMule version with GUI, not the daemon

Yes, I didn't observe any high CPU load, even though I had this file downloading at more than 30KB/s for a couple of hours. But this doesn't mean the problem does not exist, only that it is maybe more of an amuled problem and/or dependant on some system libraries.
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reise

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Re: Very big files make amule very unresponsive
« Reply #11 on: June 29, 2007, 10:39:14 AM »
If I can make some tests to try to track down the problem please tell me. I have some knowledge of programming but mostly in Windows platform.
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Kry

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Re: Very big files make amule very unresponsive
« Reply #12 on: June 29, 2007, 12:30:43 PM »
Guys, what filesystem are you using?
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reise

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Re: Very big files make amule very unresponsive
« Reply #13 on: June 29, 2007, 12:56:04 PM »
ext3 if I'm not mistaken (it was a long time since I installed my ubuntu!). Do you think that has something to do with that?
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chemical

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Re: Very big files make amule very unresponsive
« Reply #14 on: July 02, 2007, 10:16:10 PM »
amuled (2007-05-21) running on a ext3 filesystem. Do you think it could be a filesystem issue?

Is there a possibility to track the issue down with gdb? Any commands I should use?
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