Bad memory footprint on Windows 7 x64?

[quebecman]

Hello to all,

  Well, I am not complaining since qbitorrent is an excellent software alternative.  I do run Windows 7 64 bits. Unfortunately, I would like to know if anyone can acknowledge how much memory footprint they get for about 50 torrents?  I do have 175 megs for 50 torrents.

I did some testing and seeded the same amounth of torrents with UTORRENT and the footprint is about 25 megs of memory.  I do have to host more than 10 000 torrents.  Imagine how the memory footprint qbitorrent would give!

Since qbitorrent advise this freeware to be an alternative to utorrent, it would be nice to have about the same memory footprint.

Thanx. regards.

[sledgehammer_999]

You should experiment first with this setting: Tools->Options...->Advanced->Disk write cache size

[quebecman]

Hello sledgehammer_999,

  Thanx for the help!  I have put 1024 megs.  Shoud this be enough?

Thanx. regards.

[sledgehammer_999]

Since you dont want too much RAM consumed you should use 16MB(previous default).

[Nemo]

I got mine at 32MB with 124 torrents seeding. If you ask why; thats uTorrent's default value (if im right) but didn't saw a difference while it was at 16MB before.

[Dayman]

If https://github.com/qbittorrent/qBittorrent/pull/653 is merged in, auto would be a good way to go. Libtorrent 0.16.10 allows return of memory pages to kernel.

Before 0.16.10 any cache size value will make qBt grow to this value + other minor data; with pull #653, lower cache expiry timer and libtorrent 0.16.10 memory footprint will grow (obeying max cache size of course)/shrink as necessary.

[quebecman]

Hello guys,

  Well, I have run qbitorrent for about 24hrs.  I do host about 50 torrents and I am up to 350 megs.  The weird thing about it is that it seems to leak!  In other terms, more it goes in time, more it take ram!

Thanx. regards.

[Peter]

Did you override the automatic cache management?
If so, that's the "issue".
It will stop at the limit, maybe go down a little bit later on.

But if you modify the limit, it's like.. you explicitly allow qBittorrent to use ALL that memory.
It's like uTorrent when you turn on the manual cache size, AND disable options there which reduce usage automatically.
(In uTorrent it's kinda like just giving it more memory by default. In qBittorrent you explicitly let qBittorrent to eat up your memory. Do whatever he wants with it.)

[sledgehammer_999]

Put 16MiB in the disk cache and try again. Tell what happens then.

[quebecman]

Hello guys,

  Well, no luck!  It have let go qbitorrent and after about an hour,  I am up to 50 megs in memory.  In other terms, if I let it go for a complete day, I will have many tousands of RAM used.

Can anyone tell me what is this 16 megs should do?  In other terms, CAN ANYONE say how much ram is QBITORRENT suppose to take with let's say 1000 torrents?  I do not want to mentionned the competition, but UTORRENT takes about 24 megs of ram for 1000 torrents.

I am not saying that utorrent is better, but I think there is a MEMORY LEAK in qbitorrent and with research here and there on the forum, I don't see to be the only one.

Thanx. regards.

[Peter]

Whaaaaaaaaaat.

Man, you completely misunderstand the term "file cache".
It's not that how much ram the application can use... it's gotta load the libraries and work somehow.
File cache is used for.. *file* cache.
Think of it as a buffer. A fast buffer.

uTorrent got two options:
- Use it always without clearing. This works JUST LIKE qBittorrent.
Your files will stay in memory (as much as possible), and get served from there. And downloaded there, too.

- Use it with clearing. (this is mostly used only for downloading)
Your files will get downloaded into memory (!if! the disk is too slow) and get written out later.
Now if your HDD is too slow, your cache will just fill up and you back to the same point. You are just delaying the problem.
But you can fine-tune this in uTorrent. So it can be used for both up and down, up, or down. And so on.

By the way: Even uTorrent ate ~70MB for me with only around 100 torrents and I didn't mess with the settings.

[quebecman]

Hello shiki,

  M8, i do understand the difference between ram and disk cache.  I do work in IT since 18 years but I do say again that qbitorrent seems to have a memory leak! I do not want to bitch around but I am seeding as we speak 5000 torrents with UTORRENT and it takes up exactly 70 megs of ram.  All of this without tweaking anything.  Yesterday, I have add up 70 torrents in qbitorrent wich makes a total of 150 torrents and it's eating up 200 megs of ram!

If any developper have spare time, I would glady make connect with TEAMVIEWER if they want to troubleshoot.

Hey, by the way, since my first post I do say that the memory footprint is too high! 

Thanx. regards.

[Peter]

Oi m8, did you set the cache to 16MiB?
The usage shouldn't go this high if you did, so if you did, you do have a point there.

I saw the same pattern on OS X, but I had 512MiB of cache set up. It went down and up from 50-512 all the time. But never exceeded the limit mate. Let's hope someone can debug this. (Chris? Sledge?)

On Windows though I used the normal settings with a few hundred torrents but I'll test again.
Which version do you use? The one from the official site / download?

[quebecman]

Hello shiki,
 
  Yes, I did put 16 mib, closed qbittorent and re-open qbitorrent.  I do have the same issue. 

Wich version do you use?

Latest wich is suppose to be 3.0.9.

OS?

Windows 7 64 bit w/sp1


Thanx. regards.

[sledgehammer_999]

@quebecman await a new alpha build of qbittorrent 3.1.0 later today, based on libtorrent 0.16.10.