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bug#19806: substitute-binary --query busy for 36 minutes with no output
From: |
Mark H Weaver |
Subject: |
bug#19806: substitute-binary --query busy for 36 minutes with no output |
Date: |
Sat, 07 Feb 2015 13:14:31 -0500 |
While updating my profile with "guix package -c1 -u", "substitute-binary
--query" hung for 36 minutes with ~90% CPU utilization without any
active network connections and without printing any output. Here was
the relevant excerpt from 'ps auxwwf' after about 30 minutes of CPU
time:
--8<---------------cut here---------------start------------->8---
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
[...]
root 23061 0.0 0.0 5804 1248 ? Ss 12:29 0:00
/gnu/store/538qidv49w2v942502yqmv0fz187xd9z-guix-0.8.1.f1082ec/bin/guix-daemon
--build-users-group guixbuild --cores=1 --max-jobs=1
root 23087 33.3 0.2 10384 4444 ? Ss 12:30 11:44 \_
/gnu/store/538qidv49w2v942502yqmv0fz187xd9z-guix-0.8.1.f1082ec/bin/guix-daemon
23079 guixbuild --cores=1 --max-jobs=1
root 23120 87.9 58.2 1294632 1198688 ? Sl 12:30 30:25 \_
/gnu/store/122jv790mv2mlnylbrbzav65vghbw93n-guile-2.0.11/bin/guile
--no-auto-compile
/gnu/store/538qidv49w2v942502yqmv0fz187xd9z-guix-0.8.1.f1082ec/bin/guix
substitute-binary --query
root 23211 0.0 0.0 0 0 ? Zs 12:30 0:00 \_ [guix]
<defunct>
--8<---------------cut here---------------end--------------->8---
Looking at the nginx logs on hydra, I see that it downloaded a single
nar file (for paredit) very soon after starting up, and then didn't
download anything else from hydra until ~36 minutes later, when it
downloaded /nix-cache-info and then a narinfo file. It then proceeded
to do several grafting operations locally.
The 'guix package' command I'm running is v0.8.1-90-g710f3ce, and the
'guix-daemon' and substitute binary is guix-0.8.1.f1082ec.
Any ideas what it was doing during those 36 silent minutes?
Mark
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Mark H Weaver <=