100% CPU load on Windows Server 2019
Hi, for diversity purposes and curiosity i decided to choose Windows Server 2019 together with TheOnionPack for my first exit relay. But before it even started to process any user traffic the CPU from time to time gets maxed out for several minutes what makes it ugly to operate a relay on Windows. Looks like its this one: https://trac.torproject.org/projects/tor/ticket/24857 Will there be a fix soon or should i rather switch to Linux? Greetz
what say the logfile ? yes youcan allways switch to linux, but you have a interresting setup.
Am 12.02.2020 um 06:46 schrieb [REDACTED]:
Hi,
for diversity purposes and curiosity i decided to choose Windows Server 2019 together with TheOnionPack for my first exit relay. But before it even started to process any user traffic the CPU from time to time gets maxed out for several minutes what makes it ugly to operate a relay on Windows.
Looks like its this one: https://trac.torproject.org/projects/tor/ticket/24857 <https://trac.torproject.org/projects/tor/ticket/24857>
Will there be a fix soon or should i rather switch to Linux?
Greetz _______________________________________________ tor-relays mailing list tor-relays@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays
what say the logfile ?
Once the consensus diffs are processed the load drops to normal. After some time without anything noticeable for me in the debug logs the CPU suddenly jumps to 100% again and stays there till another consensus diffs are arriving. Its not as worse as it was the first two days where i had 100% CPU load half of the time but i still have this about 10-15 times a day for a few seconds or minutes each. For the next few minutes after the CPU dropped to normal the throughput is close to zero so this cant be good for clients. It would be nice to have a fix in 0.4.4 stable or earlier so that i can decide if i want to buy a Windows license key or rather shut it down. Greetz Michael
Hi,
On 18 Feb 2020, at 06:10, [REDACTED] wrote:
Once the consensus diffs are processed the load drops to normal. After some time without anything noticeable for me in the debug logs the CPU suddenly jumps to 100% again and stays there till another consensus diffs are arriving.
Its not as worse as it was the first two days where i had 100% CPU load half of the time but i still have this about 10-15 times a day for a few seconds or minutes each. For the next few minutes after the CPU dropped to normal the throughput is close to zero so this cant be good for clients.
It would be nice to have a fix in 0.4.4 stable or earlier so that i can decide if i want to buy a Windows license key or rather shut it down.
Does setting "DirCache 0" in your torrc resolve the issue? There's a suggested patch on the ticket: https://trac.torproject.org/projects/tor/ticket/24857#comment:39 But we've had trouble getting people to help with Windows development and testing. Can you compile tor from source for Windows? Or if we get a fix merged into tor, can you install the Windows "Tor Expert Bundle" ? It's built along with the Tor Browser alphas, so it might take a little while for each new version. T -- teor ----------------------------------------------------------------------
Hi teor,
On 18 Feb 2020, at 06:10, [REDACTED] < [REDACTED]> wrote:
Once the consensus diffs are processed the load drops to normal. After some time without anything noticeable for me in the debug logs the CPU suddenly jumps to 100% again and stays there till another consensus diffs are arriving.
Its not as worse as it was the first two days where i had 100% CPU load half of the time but i still have this about 10-15 times a day for a few seconds or minutes each. For the next few minutes after the CPU dropped to normal the throughput is close to zero so this cant be good for clients.
It would be nice to have a fix in 0.4.4 stable or earlier so that i can decide if i want to buy a Windows license key or rather shut it down.
Does setting "DirCache 0" in your torrc resolve the issue?
Yes it look like thats working. I lost the Guard flag (like expected) but in the last 24 hours i had no problems anymore. There's a suggested patch on the ticket:
https://trac.torproject.org/projects/tor/ticket/24857#comment:39
But we've had trouble getting people to help with Windows development and testing.
Can you compile tor from source for Windows?
i've never done that before. If there is a step-by-step guide it might be interesting to learn. Or if we get a fix merged into tor, can you install the Windows
"Tor Expert Bundle" ?
This should be no problem. I think i will keep the Windows setup at least for some time so if i can help that way feel free to send me or point me to anything Windows related what needs some testing in real world. Greetz Michael
On 21 Feb 2020, at 20:21, [REDACTED] wrote:
On 18 Feb 2020, at 06:10, [REDACTED] wrote:
Once the consensus diffs are processed the load drops to normal. After some time without anything noticeable for me in the debug logs the CPU suddenly jumps to 100% again and stays there till another consensus diffs are arriving.
Its not as worse as it was the first two days where i had 100% CPU load half of the time but i still have this about 10-15 times a day for a few seconds or minutes each. For the next few minutes after the CPU dropped to normal the throughput is close to zero so this cant be good for clients.
It would be nice to have a fix in 0.4.4 stable or earlier so that i can decide if i want to buy a Windows license key or rather shut it down.
Does setting "DirCache 0" in your torrc resolve the issue?
Yes it look like thats working. I lost the Guard flag (like expected) but in the last 24 hours i had no problems anymore.
Ok, thanks, I've opened a ticket to implement this workaround, if we can't solve the underlying issue in the 0.4.4 release.
There's a suggested patch on the ticket: https://trac.torproject.org/projects/tor/ticket/24857#comment:39
But we've had trouble getting people to help with Windows development and testing.
Can you compile tor from source for Windows?
i've never done that before. If there is a step-by-step guide it might be interesting to learn.
Alex has put together a guide for cross-compiling for Windows on Linux: https://github.com/ahf/tor-win32
Or if we get a fix merged into tor, can you install the Windows "Tor Expert Bundle" ?
This should be no problem.
I think i will keep the Windows setup at least for some time so if i can help that way feel free to send me or point me to anything Windows related what needs some testing in real world.
Great, I've made a note on the ticket. T
participants (3)
-
[REDACTED] -
teor -
TorGate