Perl 6 - the future is here, just unevenly distributed

IRC log for #gluster-dev, 2014-08-26

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All times shown according to UTC.

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11:31 ndevos Reminder: Bug Triage meeting in 30 minutes in #gluster-meeting
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12:00 ndevos Reminder: Bug Triage meeting in starting *now* in #gluster-meeting
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12:03 ndevos lalatenduM: joining #gluster-meeting ?
12:09 lalatenduM ndevos, yes
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12:35 raghug JustinClift: ping
12:35 glusterbot raghug: Please don't naked ping. http://blogs.gnome.org/markmc/2014/02/20/naked-pings/
12:38 misc ah ah
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13:37 pranithk kkeithley: I sent http://review.gluster.org/#/c/8541 for the memory leak issue in 3.4.x reported by user. Lets wait for Ravi's review before merging it.
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15:24 kkeithley_ well, that's suboptimal
15:46 kkeithley_ memory pools don't always return correctly aligned memory
15:47 kkeithley_ while it's try that x86(_64) silently handles incorrectly aligned stores and fetches, it takes extra instruction cycles to do it.
15:48 kkeithley_ while it's true
16:01 kkeithley_ always correctly aligned for i686 (probably) but sometimes not aligned for x86_64.  clang and gcc -fsanitize doesn't like it though
16:02 JustinClift Workaround?
16:03 kkeithley_ There is no workaround per se, other than to fix it.  -fsanitize is a devel tool, not something you'd do for product.
16:04 kkeithley_ If you want to use -fsanitize then you need to fix the things it finds
16:06 kkeithley_ is that what you were asking?
16:08 JustinClift Pretty much :)
16:13 kkeithley_ 100M aligned stores takes 4.25s,  100M unaligned stores takes 4.5s. These days even modern RISC hardware like PPC and ARM/aarch64  fixes up unaligned stores and fetches, although it does it at the cost of extra INS cycles. My math, if it's not wrong says it's a pretty negligible hit.
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16:14 kkeithley_ a pretty negligible hit on x86_64. dunno about PPC and aarch64
16:14 kkeithley_ the real question is, is it worth fixing in order to be able to use -fsanitize in our SDLC
16:36 JustinClift Not knowing any better, I'd just ask on gluster-devel mailing list. :)
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16:38 raghug JustinClift: you there?
16:40 JustinClift raghug: Yep
16:40 JustinClift How can I help? :)
16:42 raghug regression test on http://review.gluster.org/#/c/8523/ seems to be hung
16:42 raghug is there a way to figure out whats happening on build machine?
16:42 raghug may be a deadlock etc?
16:42 * JustinClift looks
16:43 * raghug thanks
16:43 JustinClift Ahhh, yeah: http://build.gluster.org/job/rackspace-regression-2GB-triggered/1042/console
16:43 JustinClift That does look hung.
16:43 JustinClift raghug: Do you want ssh access to the VM it's hanging on, so you can investigate yourself?
16:44 JustinClift Otherwise we can just terminate the hung job + retrigger it
16:44 raghug ssh access would be good
16:44 raghug may be there is a deadlock
16:44 raghug would like to fix it, in case
16:44 JustinClift Sure.
16:45 * JustinClift will email you the details :)
16:45 raghug sure.. thanks :)
16:48 JustinClift raghug: Do you have a Jenkins login?
16:48 JustinClift raghug: eg so you can trigger jobs, mark nodes offline, etc
17:06 raghug JustinClift: yes
17:06 raghug I do have a login
17:07 JustinClift raghug: Cool :)
17:07 JustinClift raghug: It'd be a good idea to mark that node as offline (which shouldn't kill the running task).  That'll stop new jobs being run in it.
17:08 raghug JustinClift: cool. I'll probably be using it after half an hour
17:09 JustinClift raghug: I'm not stressed, it's all yours.  Do with it what you want, etc :)
17:09 raghug sure.. thanks a bunch :)
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22:50 Topic for #gluster-dev is now Gluster Development Channel - http://gluster.org | For general chat go to #gluster | Patches - http://review.gluster.org/ | Channel Logs - https://botbot.me/freenode/gluster-dev/ & http://irclog.perlgeek.de/gluster-dev/
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