transmission-daemon high RAM usage

Thank you for your bug report. Could you re-install the Ubuntu version, trigger the issue and then attach the 'journalctl -b 0' log from the session to the report? Is it triggering on a specific torrent?

It's not triggered by any special torrent file. Right now I am seeding Ubuntu 22.04's files.

Here is the log you asked me.

Right now the whole system is using almost 1GB of RAM (normally it uses 200MB~300MB).

Its uptime is about 18 hours.

Status changed to 'Confirmed' because the bug affects multiple users.

This issue is still available in x86_64 build also.
Fixed in upstream, but consume more CPU now than it should.

https://github.com/transmission/transmission/issues/3536

https://github.com/transmission/transmission/issues/3494

Confirmed happening in x86_64 build (and has been for at least six months, under both 22.04 and 22.10...though it was fine at some point in the past as I used it successfully for many years with no issue. Please, please, please fix (even if the solution is giving us some mechanism to upgrade to the 4.0 beta via PPA or something (as the commits mention several fixes to memory leaks)...this has been driving me nuts!

No specific torrent, reboot or restart fixes issue (temporarily).

Transmission 3.00 (bb6b5a062e).
51 files seeding (currently), though it doesn't seem sensitive to the number.
16MB disk cache. Max 240 peers.
Tried disabling PEX, DHT and LPD to see if that would help as I don't particularly need them anyway (but it doesn't help).

There are many tickets about this memory leak:
https://github.com/transmission/transmission/issues/3055
https://github.com/transmission/transmission/issues/3494
https://github.com/transmission/transmission/issues/3536

The issue has been already fixed, but we have to wait for the next release,
or we can install the nightly builds as recommended by ckerr.
1) install prerequirements:
sudo apt-get update
sudo apt install build-essential cmake libcurl4-openssl-dev libssl-dev curl
2) download latest tarball from https://build.transmissionbt.com/job/trunk-linux/
3) build
tar xf transmission-4.0.0-beta.1.dev+rd381939267.tar.xz
cd transmission-4.0.0-beta.1.dev+rd381939267
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
make
sudo make install

The "make" step took an hour on my ten yrs old laptop.
Official description at
https://github.com/transmission/transmission/blob/main/docs/Building-Transmission.md

I'm not comfortable with make install.

It seems to be caused by openssl3 patch. I reverted it and used gentoo openssl3 patch, transmission is under 122Mb now instead of 10s of gigabytes.

https://gitweb.gentoo.org/repo/gentoo.git/tree/net-p2p/transmission/files/transmission-3.00-openssl-3.patch

You can try this ppa: https://launchpad.net/~elhana/+archive/ubuntu/ppa-elhana
I've just enabled arm64 build on ppa (apparently you can now).

Noting 4.0.1 stable has now been released, perhaps we could have an update to fix this issue now (if not in 22.10, perhaps in 23.04?).

Same problem, is possible to have an update to fix this problem?
Thx

It's possible to sideload the debian package and its dependencies.

I did it before reporting this bug and it has been working flawlessly.

Not the perfect solution but the solution that is avaliable.

Don't forget to lock the package and dependencies using apt-mark,
otherwise, it will get upgraded and the bug will return.

On Sun, Mar 12, 2023, 15:15 lan <email address hidden> wrote:

> Same problem, is possible to have an update to fix this problem?
> Thx
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1973084
>
> Title:
> transmission-daemon high RAM usage
>
> Status in transmission package in Ubuntu:
> Confirmed
>
> Bug description:
> Transmission uses a lot of RAM in ubuntu 22.04 server (arm64) runnign
> on a Raspberry Pi 4.
>
> It "eats" RAM and the RAM usage grows each hour until it crashes the
> system.
>
> I sideloaded transmission-daemon and its dependancies from debian 11
> (arm64) locked the packages so apt won't update them and, ever since,
> this issue hasn't happened.
>
>
> Description: Ubuntu 22.04 LTS
> Release: 22.04
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/1973084/+subscriptions
>
>

I caught transmission-daemon using 12Gb (!) of RAM on my AMD64 system recently, and for what it's worth, the Transmission 4.0.2 packages from UbuntuHandbook PPA fix this issue. I'd noticed 3.0.0 using insane amounts of RAM many times before (workaround was to restart the daemon), but seeing it use 12Gb really made me look for a newer version. Version 4.0.2 uses <200mb with the same torrents.