[cfarm-users] request for tmpfs on gcc220 (was: gcc220 replaced with new hardware)
Juan Francisco Cantero Hurtado
iam at juanfra.info
Fri Nov 5 15:45:10 CET 2021
On Fri, 05 Nov 2021 11:14:47 +0100
Ævar Arnfjörð Bjarmason via cfarm-users
<cfarm-users at lists.tetaneutral.net> wrote:
> On Mon, Sep 20 2021, Baptiste Jonglez via cfarm-users wrote:
> > [[PGP Signed Part:Undecided]]
> > Hi,
> > Due to a hardware failure, gcc220 had to be reinstalled on new
> > hardware.
> > Unfortunately, it means that all user data on the old system has
> > been lost.
> > On the bright side of things, the new hardware is much larger, with
> > 12 cores / 24 threads and 384 GB of RAM. This is now the host with
> > the largest amount of memory in the farm.
> > Many thanks to openbsd.amsterdam for providing the hardware and
> > hosting it!
> That's great, yes thanks for providing an OpenBSD machine that's this
> capible, it's not long ago that I'd often not test at all on OpenBSD
> because there was just some very slow VM'd 1-core box.
> Request: Would it be possible to provide a tmpfs on that machine
> ("man 8 mount_tmpfs" I believe) similar to the /run/user on some
> linux boxes? Something in the small number of GBs would be more than
tmpfs was disabled long time ago on OpenBSD and is unsupported. The
closest thing to tmpfs is mfs:
However, the performance is not really great. Also, if you reserve
space for mfs, it can't be used as normal RAM.
> My main use for development on these boxes is running git.git's test
> suite, it creates a fair bit of FS churn, and is very quickly I/O
> limited. It sets up and populates a lot of small git repositories on
> disk, only to rm -rf them shortly afterwards.
Until someone add a better filesystem to OpenBSD, the disk write
performance going to be low. You can't avoid that.
> For my use it doesn't need to be some per-user mounts like on linux,
> and it's also fine if there's say a nightly cronjob to rm -rf the
> whole thing, it's only needed for transitory (usually no more than
> max 30s) data.
> cfarm-users mailing list
> cfarm-users at lists.tetaneutral.net
Juan Francisco Cantero Hurtado http://juanfra.info
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