<div style="font-family: Arial, sans-serif; font-size: 14px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">Dear Jeff Blum,</div><div style="font-family: Arial, sans-serif; font-size: 14px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><br></div><blockquote style="border-color: rgb(200, 200, 200); border-left: 3px solid rgb(200, 200, 200); padding-left: 10px; color: rgb(102, 102, 102);"><div style="font-family: Arial, sans-serif; font-size: 14px;">Yes, I am seeing something similar on 0.4.8.9 (and potentially
earlier versions as well, not 100% sure when it started). I
upgraded to 0.4.8.10 today hoping it would go away, but I'm seeing
it again. Watching in nyx (screenshot of bandwidth graph
attached), reliably every ~30 seconds.</div></blockquote><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">This is just Tor doing zlib-compression on some documents, you can somewhat combat it by assigning more cores to your machine.</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Tor is mostly singlethreaded, but OnionSkin decryption, zlib compression and some other operations utilize all cores detected.</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Regards,</div><div style="font-family: Arial, sans-serif; font-size: 14px;">George<br></div><div class="protonmail_quote">
On Monday, January 8th, 2024 at 9:54 AM, Jeff Blum <jeff@mulb.us> wrote:<br><br>
<blockquote type="cite" class="protonmail_quote">
<br>
<blockquote type="cite">On
12/13/23 06:15, Roman Mamedov wrote:
<br>
<blockquote type="cite">
<br>
On the older version it gets about 80+80 Mbit total in+out. On
the new one the
<br>
average is at most 45+45 Mbit. There are frequent periods where
the bandwidth
<br>
drops to 5-10 Mbit for 3-5 seconds, while all Tor processes
continue to use
<br>
100% of both CPUs, then gradually climbs back up.
<br>
<br>
Does anyone notice anything similar?
<br>
<br>
</blockquote>
</blockquote>
<p>Hi Roman,</p>
<p>Yes, I am seeing something similar on 0.4.8.9 (and potentially
earlier versions as well, not 100% sure when it started). I
upgraded to 0.4.8.10 today hoping it would go away, but I'm seeing
it again. Watching in nyx (screenshot of bandwidth graph
attached), reliably every ~30 seconds, I see the bandwidth briefly
plummet and the tor process CPU spike. Guard relay running in
docker under ubuntu server on a Ryzen 3600 machine with 32GB RAM.
Note that when the relay restarted after the upgrade today, it
didn't do this for a while (maybe an hour or so? wasn't watching
it the whole time), but then started glitching every 30s. Once it
starts it does this every ~30 seconds forever. Relay has been
running like this for weeks, maybe months.<br>
</p>
<p>best,</p>
<p>-jeff</p>
<p><br>
</p>
<p><img class="proton-embedded" alt="" src="cid:part1.LEzxCjKp.qOpU3WZq@mulb.us"></p>
</blockquote><br>
</div>