On Fri, Sep 12, 2025 at 8:58 AM Garrett Wollman <[email protected]> wrote: > > <<On Fri, 12 Sep 2025 08:50:10 -0700, Rick Macklem <[email protected]> > said: > > > Ok, but don't we want something that prevents the arc from taking all > > the memory? (It seems like 932Gbytes should be close to a hard > > upper bound for a system with 1Tbyte of ram?) > > Presently it says: > > kstat.zfs.misc.arcstats.c_max: 1098065367040 > > That's 1 TiB less 1379 MiB. Which in all honesty *ought to be enough* > for munin-node, nrpe, ntpd, sendmail, inetd, lldpd, nslcd, sshd, syslogd, > mountd, and nfsuserd. Maybe. A lot of things like he size of the buffer cache and buckets used for malloc, etc. are tuned when the system boots, based on how much ram the system has. I have no idea what those numbers look like for a 1Tbyte system.
In other words, if the system booted thinking it has 2Gbytes of ram I suspect you would be correct, but if the system boots thinking it has 1Tbyte of ram, then??? rick > > -GAWollman >
