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by christian
Tue Jul 10, 2018 4:21 pm
Forum: Little Snitch General
Topic: Rule Groups: Great idea but not very useful right now. I have suggestions!
Replies: 6
Views: 482

Re: Rule Groups: Great idea but not very useful right now. I have suggestions!

We have improved the object archiving performance in 4.1.3 nightly and thus (experimentally) increased the maximum amount of rules in a subscription to 100k. If anybody wants to try this, please download 4.1.3 nightly. Rule set analysis in Little Snitch Configuration and Network Monitor is still slo...
by christian
Tue Jul 10, 2018 2:10 pm
Forum: Little Snitch General
Topic: LS 4.1 too much CPU in the background
Replies: 18
Views: 811

Re: LS 4.1 too much CPU in the background

We have identified the cause for this: A memory leak in the kernel extension. The kext had to check lots of leaked memory when looking for traffic statistics.

The issue is fixed in 4.1.2 and in the new 4.1.3 nightly build.
by christian
Tue Jul 10, 2018 1:59 pm
Forum: Little Snitch General
Topic: 4.0.3 has huge memory and CPU footprint in High Sierra
Replies: 46
Views: 3084

Re: 4.0.3 has huge memory and CPU footprint in High Sierra

Let me first respond to the alert loop: This happens if Little Snitch cannot determine the host name for the remote computer uniquely. If there are multiple names and applying rules to all these names does not yield the same result (allow or deny), Little Snitch shows an alert for the IP address. No...
by christian
Sun Jul 08, 2018 1:20 am
Forum: Little Snitch General
Topic: 4.0.3 has huge memory and CPU footprint in High Sierra
Replies: 46
Views: 3084

Re: 4.0.3 has huge memory and CPU footprint in High Sierra

Thanks for all the info! For the moment, I can't get any additional information out of this. What would be helpful is if you can find out which action causes a sudden increase of memory usage. Here's a shell script which checks memory usage every 10 seconds and brings a notification if it exceeds a ...
by christian
Thu Jul 05, 2018 3:14 pm
Forum: Little Snitch General
Topic: update to 4.1.1 = problems
Replies: 2
Views: 182

Re: update to 4.1.1 = problems

We have a change in 4.1 which does not work well with rule sets containing more than, say, 10.000 rules. We are working on this, but it's not so easy to fix because it's mostly a bug in the frameworks. If your old rule set contained "too many" rules, 4.1 will take *quite a while* until the...
by christian
Tue Jun 26, 2018 11:09 am
Forum: Little Snitch General
Topic: Subscribing to blacklists
Replies: 8
Views: 428

Re: Subscribing to blacklists

We have set the limit for each subscription because other limits are hard to explain. If you subscribe multiple feeds, each going to the limit, you will notice performance issues. The limit and what is counted is subject to change.
by christian
Tue Jun 26, 2018 9:48 am
Forum: Little Snitch General
Topic: 4.0.3 has huge memory and CPU footprint in High Sierra
Replies: 46
Views: 3084

Re: 4.0.3 has huge memory and CPU footprint in High Sierra

Thanks for the `heap` output! Unfortunately it does not list the large sections, so it's not much help. So let me summarize: - Network Monitor sometimes swallows a large chunk of memory (several 100 MB). - The memory is not freed (maybe it's freed some times, but we won't notice those chunks). - The...
by christian
Mon Jun 25, 2018 10:12 pm
Forum: Little Snitch General
Topic: Subscribing to blacklists
Replies: 8
Views: 428

Re: Subscribing to blacklists

You can't fix it at the moment. Parts of the code use algorithms with computing time proportional to the square of the number of hosts/domains. We have to identify all those code places and find alternative algorithms, if possible. For the moment, providers of managed rules must either make a select...
by christian
Mon Jun 25, 2018 12:01 pm
Forum: Little Snitch General
Topic: 4.0.3 has huge memory and CPU footprint in High Sierra
Replies: 46
Views: 3084

Re: 4.0.3 has huge memory and CPU footprint in High Sierra

We need to get more information about where the large blocks are allocated and what they contain. We can't use the debugger, though, due to security settings. But as far as I can tell, the `heap` tool should work. So please try the following: Open Activity Monitor to find the PID (Process ID) of Lit...
by christian
Mon Jun 25, 2018 10:54 am
Forum: Little Snitch General
Topic: Subscribing to blacklists
Replies: 8
Views: 428

Re: Subscribing to blacklists

Which version of Little Snitch do you use? We are aware of this problem and have therefore limited the maximum amount of domains/hosts which can be referenced in a subscription to 10,000. This is in the final 4.1, so you're probably running an older nightly release. If you upgrade, please upgrade to...
by christian
Sun Jun 24, 2018 7:13 pm
Forum: Little Snitch General
Topic: Stop recording browsing history!
Replies: 27
Views: 3437

Re: Stop recording browsing history!

Little Snitch is doing it this way since almost 15 years and it's just now that people begin to complain. Regarding privacy: Little Snitch shows this information to YOU, the owner of the computer and the person who initiated the connections. It becomes a problem only if you let somebody else use you...
by christian
Sat Jun 23, 2018 6:20 pm
Forum: Little Snitch General
Topic: LS 4.1 too much CPU in the background
Replies: 18
Views: 811

Re: LS 4.1 too much CPU in the background

We are talking about an increase of CPU load from below 1% (as far as I remember and people reported) to 3 to 5% on one CPU (out of 4). I have not noticed this on my machine until somebody pointed us to it. If you want to wait, OK, but I think it's not such a big deal. If it's more than the 3 to 5% ...
by christian
Sat Jun 23, 2018 11:31 am
Forum: Little Snitch General
Topic: LS 4.1 too much CPU in the background
Replies: 18
Views: 811

Re: LS 4.1 too much CPU in the background

If you contact us in support, we can make 4.0.6 available for you. We want to have everybody on the latest version because each release fixes bugs, some of them are vulnerabilities. E.g. 4.1 fixes CVE-2018-10470. Xcode / Profile / CPU does not help in this case as the time is spent in the kernel mod...
by christian
Fri Jun 22, 2018 9:50 am
Forum: Little Snitch General
Topic: 4.0.3 has huge memory and CPU footprint in High Sierra
Replies: 46
Views: 3084

Re: 4.0.3 has huge memory and CPU footprint in High Sierra

Thanks again! This time the relation to CoreAnimation is not so pronounced: CoreAnimation 00000001147a9000-00000001147de000 [ 212K 212K 212K 0K] rw-/rwx SM=SHM PURGE=V VM_ALLOCATE 00000001147ec000-0000000175824000 [ 1.5G 0K 0K 1.5G] rw-/rwx SM=PRV MALLOC_LARGE 0000000175824000-0000000175ac9000 [ 270...
by christian
Thu Jun 21, 2018 10:06 am
Forum: Little Snitch General
Topic: LS 4.1 too much CPU in the background
Replies: 18
Views: 811

Re: LS 4.1 too much CPU in the background

The 4.1.1 nightly does not address this issue. We have not found out what causes the increased CPU load since the code involved was not changed since 4.0.6. It must be a side-effect of an other change. Network Monitor receives notifications about all connections regardless of the filter state. Even ...

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