September 2019 - Koha-bugs - lists.koha-community.org

[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 --- Comment #22 from David Cook <dcook(a)prosentient.com.au> --- (In reply to Martin Renvoize from comment #20) > I'd really like to see a regression test added for this if at all possible I'm with Joonas on this one. I've tried a number of times, and the results are very unpredictable. On the first run, memcached is empty, and even 100 runs didn't get any errors. Ran the test script again with memcached warmed up, and it took almost until the end of my 100 runs (maybe around 50-70) to get an error. Ran the test script again, and very soon got quite frequent errors. Ran the test script another few times, and now I'm no longer getting any errors. Cleared memcached... and can't reproduce again. Seems weird that I got so "lucky" the first times to get errors and now I'm getting none. I think this just goes to show the difficulty in testing this one... -- You are receiving this mail because: You are watching all bug changes.

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[Bug 8822] Public calendar
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8822 Mubassir Ahsan <mahsandu(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mahsandu(a)gmail.com -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 --- Comment #21 from Joonas Kylmälä <joonas.kylmala(a)helsinki.fi> --- (In reply to Martin Renvoize from comment #20) > I'd really like to see a regression test added for this if at all possible This might be quite difficult to reproduce in a test because on my machine this happened at 50 forks but on David's machine at 100 forks, so someone might have a machine where 1000 forks are required and when we do 1000 forks on lower specced machine it might totally freeze. I cannot come up currently with any way to test this specific case in a consistent way. Also while finding ways to test this online I came across this and there doesn't seem to be any way we could use currently with Koha's testing framework: <https://softwareengineering.stackexchange.com/questions/196105/testing-mult…>. I don't know much about fuzzing and stuff so that could potentially something to look into, and stress testing Koha with 1000+ clients connecting simultaneously. -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 --- Comment #20 from Martin Renvoize <martin.renvoize(a)ptfs-europe.com> --- I'd really like to see a regression test added for this if at all possible -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 --- Comment #19 from Mason James <mtj(a)kohaaloha.com> --- Created attachment 92868 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=92868&action=ed… about.pl page the about.pl page looks happy and correct.. great work! -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 Katrin Fischer <katrin.fischer(a)bsz-bw.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mirko(a)abunchofthings.net Keywords| |dependency --- Comment #18 from Katrin Fischer <katrin.fischer(a)bsz-bw.de> --- Adding dependency keyword to get Mirko's opinion on the dependency change. -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 --- Comment #17 from David Cook <dcook(a)prosentient.com.au> --- Updated the title to be more in-line with the actual content of the report -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Make Memcached usage fork safe
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 David Cook <dcook(a)prosentient.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Discussion: strategy for |Make Memcached usage fork |diagnosing memcache issues. |safe -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Discussion: strategy for diagnosing memcache issues.
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 David Cook <dcook(a)prosentient.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #92835|0 |1 is obsolete| | --- Comment #16 from David Cook <dcook(a)prosentient.com.au> --- Created attachment 92867 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=92867&action=ed… Bug 13193: Make Memcached usage fork safe When a high enough number of forks try to access for example system preferences with Koha::Cache using memcached as backend the results of different cache requests get mixed up. The problem is fixed by using Cache::Memcached::Fast::Safe that is a fork safe version of Cache::Memcached::Fast. Sponsored-by: The National Library of Finland Signed-off-by: David Cook <dcook(a)prosentient.com.au> Works as described, and solves an insidious difficult to debug problem in Koha. -- You are receiving this mail because: You are watching all bug changes.

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[Bug 13193] Discussion: strategy for diagnosing memcache issues.
by bugzilla-daemon＠bugs.koha-community.org 17 Sep '19

17 Sep '19

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13193 David Cook <dcook(a)prosentient.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|Needs Signoff |Signed Off -- You are receiving this mail because: You are watching all bug changes.

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