On Tue, Nov 10, 2020 at 05:26:26AM -0800, Chuck Silvers wrote: > On Tue, Nov 10, 2020 at 11:40:08AM +0000, Patrick Welche wrote: > > My 4 Nov -current/amd64 build box seems to be building slowly, with a lot > > of "biowait", e.g. watching the RES of a cc1plus slowly crawl up to SIZE > > at around 3M per 5s. > > > > Is 10G of "Wired" normal? (32G RAM + 64G swap) > > (lots of malloc(9) and no free(9)?) > > kernel memory usage is not reported as "wired" memory.
I got that notion from: https://www.netbsd.org/docs/internals/en/chap-memory.html#wired_memory > > Memory: 3235M Act, 115M Inact, 10G Wired, 75M Exec, 2860M File, 2800M Free > > Swap: 64G Total, 11G Used, 53G Free > > no, 10GB wired memory out of 32GB total RAM is not a typical situation. > could you send me the output of "ps aux" and "vmstat -m" ? Thanks - sent off list > with 11GB of swap in use, it's not surprising that the system would be > very slow. Part of the question is why it needs to swap... (where did the 10G go?) > > it is "just" building... > > > > Could kern.maxfiles = 108928 be an issue? (3404 default below) > > do you mean that on the system that is slow, kern.maxfiles is 108928? > that doesn't seem overly large for 32GB RAM. > > I'm not sure what you mean by "3404 default below". just that the box below had the default kern.maxfiles=3404 setting, but as you say that shouldn't be too large, and without it, one sees complaints of insufficient files. > > Just looked at another amd64 box for comparison (also building - no swap): > > > > Memory: 15G Act, 3820K Inact, 16M Wired, 44M Exec, 14G File, 135G Free > > Swap: > > this system has a lot more RAM and most of it isn't even used, > so I would expect this system to perform much better than the first one. Yes, but also just 16M of "Wired" memory... Cheers, Patrick
