Date: Sun, 19 Sep 2021 23:02:53 +0500 From: "Eugene M. Zheganin" <eugene@zhegan.in> To: stable@freebsd.org Subject: Re: FreeBSD 12.1 vs 13.0 TCP connections count Message-ID: <daacf9f6-45da-6966-e1df-8406004cd1e0@zhegan.in> In-Reply-To: <9cac45f1-9b81-5ed8-b3ae-c9567ac977cb@zhegan.in> References: <9cac45f1-9b81-5ed8-b3ae-c9567ac977cb@zhegan.in>
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Hello, 13.09.2021 11:33, Eugene M. Zheganin пишет: > [...] > > I'm also graphing the balancer/nginx accepts/handled rate which is > constant at 4K/sec - means the flow itself isn't changing a lot. > > I'm also graphing the connections scoreboard from nginx and it also > shows x4 drops/rises when switching from 12.1 to 13.0. > > Is this a bug/glitch of the 13.3 statistics (seems unprobeble because > nginx shows it too) or is there some other explanation that I don't get ? > In the end this looks like a regression in the end. Considering two identical servers rented in one datacenter, I have to downgrade 13.x balancer to 12.2 - I'm unable to find other eplanation to the things described above. The difference in connection numbers isn't the major reason; the real reason is the inability to handle the load, and the most discouraging thing is that I'm unable to measure this inability using formal metrics: cpu/disk load is okay, no network errors on the driver layer, no complains in the dmesg or syslog. Eugene.
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