[µTorrent Server 3.0 alpha build 27079 (for Linux) - x86]

I have some 'figures' comparing utserver and rtorrent mem and cpu consumption.

Please notice the excessive CPU usage from utserver, and the exponatial difference in mem usage (Resident).

After 2-3 days of running utserver, I realised that I would prefer higher memory usage, than such a cpu cruncher...

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND

t3ngu 14546 99.7 0.0 177316 2020 pts/3 Sl+ Sep18 3661:38 ./utserver

t3ngu 16217 0.3 0.7 162632 28976 pts/8 S+ Sep20 4:49 rtorrent

Notice please on strace log below, it takes almost a second for futex_wait_private, while in few seconds of tracing, there are so many get time, and get date calls...

strace:

0.000000 [ f76f6425] restart_syscall(<... resuming interrupted call ...>) = 0 <0.623719>

0.641303 [ f76f6425] futex(0xf43206ac, FUTEX_WAKE_PRIVATE, 1) = 0 <0.000027>

0.000263 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000029>

0.000284 [ f76f6425] futex(0x80f0008, FUTEX_WAKE_PRIVATE, 1) = 0 <0.000020>

0.000105 [ f76f6425] stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2917, ...}) = 0 <0.000023>

0.000189 [ f76f6425] stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2917, ...}) = 0 <0.000018>

0.000114 [ f7684e16] clock_gettime(CLOCK_MONOTONIC, {97632, 600539704}) = 0 <0.000017>

0.000101 [ f76f6425] gettimeofday({1284933925, 828857}, NULL) = 0 <0.000018>

0.000087 [ f76f6425] clock_gettime(CLOCK_REALTIME, {1284933925, 828945359}) = 0 <0.000018>

0.000092 [ f76f6425] futex(0xf43206c8, FUTEX_WAIT_PRIVATE, 192101, {59, 999911641}) = 0 <0.998708>

0.999125 [ f76f6425] futex(0xf43206ac, FUTEX_WAKE_PRIVATE, 1) = 0 <0.000044>

0.000277 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000020>

0.000127 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000019>

0.000097 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000018>

0.000092 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000018>

0.000090 [ f76f6425] futex(0x80f0008, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) <0.000018>

0.000090 [ f76f6425] futex(0x80f0008, FUTEX_WAKE_PRIVATE, 1) = 0 <0.000018>

0.000100 [ f76f6425] stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2917, ...}) = 0 <0.000036>

0.000159 [ f76f6425] stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2917, ...}) = 0 <0.000021>

0.000123 [ f7684e16] clock_gettime(CLOCK_MONOTONIC, {97633, 601100131}) = 0 <0.000018>

0.000097 [ f76f6425] gettimeofday({1284933926, 829414}, NULL) = 0 <0.000018>

0.000099 [ f76f6425] clock_gettime(CLOCK_REALTIME, {1284933926, 829519271}) = 0 <0.000019>

0.000098 [ f76f6425] futex(0xf43206c8, FUTEX_WAIT_PRIVATE, 192103, {59, 999894729}) = 0 <0.998127>

0.998388 [ f76f6425] futex(0xf43206ac, FUTEX_WAKE_PRIVATE, 1) = 0 <0.000033>

[µTorrent Server 3.0 alpha build 27079 (for Linux) - x86]

@mcdonald

Thanks for the quick reply.

I would be looking fwd for that build.

I have also used qbittorrent (and measured the memory) and I thought it was too much. The shared I understand can be a lot, but the registered, to reach 300MB I personally think its too much.

For utserver process I see 173MB shared, 2K resident.

Since the new version (I updated I think Sat morning,) I see too much cpu usage. Now with 3 torrents idle, uses 94% of a core. I have forced my cpu's to low freq otherwise they work at full frequency. But I bet there will be a fix soon

Cheers.

PS. I have ran few straces and lsof's to see why spins the cpu constantly, please let me know if would need any of these logs.

[µTorrent Server 3.0 alpha build 27079 (for Linux) - x86]

Good day.

I would like to describe a small problem I had with the μtorrent server. Ok the reason it broke was... I.

I have a remotely mounted filesystem, where i had few ISOs that I needed to seed.

I soft linked the ISOs to the 'default' download path of μtorrent, and started the server.

After a couple of days I 'lost' the mount point due to a hardware problem.

I managed to unmount the partitions, and I stopped the torrents from μtorrent server. The problem was trying to shutdown the server (utserver). I pgrep'ed the process name, pkilled it, killed -9, killed his parent, tried sigdev and coredump, but I couldn't really kill the processes. I even tried to unlink the proc from the proc table. I wanted to kill it, as when I tried to run it again it wouldn't bind on the netport for the gui. (and probably wouldn't upload/download either)

I am not bitching or anything, after all its an alpha build and it runs under my responsibility, but I really had to reboot my workstation (and thus been mocked by all my windows users friends).

I didn't keep any 'logs' or strace/lsof logs as it was rather late, and I my choice was bed and not logs.

I promise next time I will be more thorough logging all the events, and traces, but I am not sure if you can/or have seen this behavior (staying alive as zombie till the end of times).

Now I am running it from within a screen, so if I run through the same issue, I have more options of loging and killing it.

I wrote this experience as its a discussion forum, and I am really happy to see the developers to actually post replies

So far I am really happy with the application, I see it running now straight for 3 days with total memory usage (shared and resisdent at 517156 K) which really puts a smile on my face

great job once again,

t3ngu

[µTorrent Server 3.0 alpha build 27079 (for Linux) - x86]

works so far great on a 2.6.32-24-generic #42-Ubuntu x86_64 (i32 libs installed of course).

Excellent with memory usage, 46564 on my top, while 551M my qbittorrent with same torrents open.

web ui works great with chromium browser 5.0.375.127~r55887-0ubuntu0.10.04.1

One request thoug. Can we have an option to change directories for torrents? Since I am migrating to utorrent server, I would like to have an option to seed old torrents that don't reside in the default directory listed in the settings.

Now I have to create symlinks

Apart from that, seem like a great job.

Cheers!