Recently the fingerprinting of our jubs is becoming very slow.Per build
we have 16 artifacts to be fingerprinted, now that alone lasts ~5
minutes. Since we are using copy artifact plugin very heavily, the
situation is becoming even worse - the slowness adds up.
Unfortunately I cannot tell from which Jenkins version this happens, I
only noticed this slowness in several weeks ~ around version 1.51x, but
the problem might well be irrelevant to the jenkins version.
Some more background information:
Jenkins 1.518 on Debian 6 64bit and built-in Winstone
we have a standard job template, each git branch has one jenkins job
respectively, at the moment we have ~240 jobs (active + disabled). If
one branch is done, the jenkins job is disabled but not deleted. So we
have many jobs with multiple builds, and we do limit the perserved
artifacts (max. 2 builds per job). Beside that, we have 2 long-live
jobs, together ~ 700 builds. The number of artifacts sum up could be
quite large. Although I do delete (linux shell) the artifacts
periodically (every several months to ~1 year) , I didnt touch the
fingerprints/ directory ever since we first adopted Hudson (5+ years).
Now the fingerprints/ contains 245M data.
I suspect that the size of the fingerprint database may be the main
culprit, but thats only my speculation without any hard evidence. It
seems that Jenkins garbage collects them [1] if builds are deleted
within/through Jenkins. But is the fingerprint database being generally
maintained?
Does the size of the fingerprint database really matter? If yes, can I
just delete the whole fingerprints/ without breaking the copy-artifact
plugin (the ability to deploy a previous build using copy-artifact is
crucial for us)? Or how can I reduce the size?
I might be looking at a complete wrong direction, so any help/idea is
very much appreciated.
-jv
[1] https://issues.jenkins-ci.org/browse/JENKINS-18417
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