From: Ricardo Wurmus <rekado@elephly.net>
To: Roel Janssen <roel@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>
Subject: Re: Performance regression on NFS with new manifest version
Date: Wed, 09 Aug 2017 22:39:50 +0200 [thread overview]
Message-ID: <873790o4q1.fsf@elephly.net> (raw)
In-Reply-To: <rbua83a1f4n.fsf@gnu.org>
Hi Roel,
> Looking into the manifests ($GENERATION_15/manifest and
> $GENERATION_16/manifest), I noticed that generation 15 uses manifest
> version 2, and generation 16 uses manifest version 3.
>
> What has changed, so that it takes a lot longer to run the same command
> as before? (this is probably disk-related, because that is a known
> cause for trouble on network-mounted stores..)
Commit 55b4715fd4c03e46501f123c5c9bc6072edf12a4 bumped the manifest
version to 3. The goal was to represent propagated inputs as manifest
entries so that we can anticipate conflicts from propagated inputs and
refuse to build a profile when there would be conflicts.
--
Ricardo
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC
https://elephly.net
next prev parent reply other threads:[~2017-08-09 20:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-08 11:19 Performance regression on NFS with new manifest version Roel Janssen
2017-08-09 20:39 ` Ricardo Wurmus [this message]
2017-08-10 13:02 ` Roel Janssen
2017-08-21 15:49 ` Ludovic Courtès
2017-08-22 15:32 ` Roel Janssen
2017-09-22 9:55 ` Ludovic Courtès
2017-09-22 12:09 ` Roel Janssen
2017-10-05 14:54 ` Ludovic Courtès
2017-10-05 15:13 ` Ricardo Wurmus
2017-11-08 10:32 ` Roel Janssen
2017-11-09 9:58 ` Ludovic Courtès
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