Changes between Initial Version and Version 1 of developers-meeting-20140917


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Timestamp:
09/17/14 17:08:21 (5 years ago)
Author:
paul
Comment:

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  • developers-meeting-20140917

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     1[[TOC(depth=0)]] 
     2 
     3[part of a [wiki:developers-meetings series of meetings]] 
     4 
     5= Participants = 
     6 
     7Tigran, Al, Gerd, Paul. 
     8 
     9= Agenda = 
     10 
     11[see box on the right-hand side] 
     12 
     13= Postcards = 
     14 
     15Up to two minutes (uninterrupted) per person where they can answer two questions: 
     16 *  What I did last week (since the last meeting), 
     17 *  What I plan to do in the next week. 
     18 
     19No questions until we get through everyone :) 
     20 
     21Al: after committing Alarms patches, updating documentation (see patch), release notes next.  Neglected to move functionality from admin servlet to alarms (patch coming).  Started sand-boxing redesign ideas -- looking at changes to optimise web-admin. 
     22 
     23Gerd: nothing at all 
     24 
     25Tigran: mostly postgresql performance tuning (dCache injection ). Single inject take 1--1.5 ms.  Each file create takes 3 operations, so ~5 ms, which results in a 200 Hz rate.  Currently, any changes now makes the performance worse.  Moved to machine with SSDs on RAID-0 with no performance improvement found. 
     26 
     27Run tests with multiple clients: saturate 3,000 (corresponding to ~10k transactions-per-second).  8 physical cores (16 cores with hyper-threading).  Better performance with hyper-threading switched off.  For 20 clients it's 50% difference.  Using pgtop command to measure transaction rate. 
     28 
     29Installed on cloud system current trunk -- has all changes needed to run cloud.  We now drop the custom RPM.  Next week, supposed to upgrade CMS instance to 2.10, but this is postponed due to hardware not arriving. 
     30 
     31jGlobus are releasing 2.1.0, based on our branch. 
     32 
     33Dmitry: uneventful week, talking to Patrick, ANL, building encp client for deployment tomorrow.  Cherry-picking stuff 2.6 
     34 
     35Paul: fighting G2 tests. 
     36 
     37= Special topics = 
     38 
     39= Accounting = 
     40 
     41Monthly report from each Tier-1 and Tier-2, with various issues.  NDGF has a unique situation where Tier-2 resources are included but pledges. 
     42 
     43Tape buffers: disks in front of tape are not part of the disk pledge. 
     44 
     45= postgres tuning = 
     46 
     47= Trunk activity = 
     48 
     49Progress with new features... 
     50 
     51Tigran: jump into Owncloud 
     52 
     53= Issues from [FIXME: Add link to yesterday's Tier-1 meeting] = 
     54 
     55= Plans for patch-releases = 
     56 
     57Should we make a new patch release? 
     58 
     59= Outstanding Documentation = 
     60 
     61Get book out onto web pages, 
     62 
     63Auto update would be next step. 
     64 
     65= Outstanding RT Tickets = 
     66 
     67[This is an [wiki:TicketActions auto-generated] item.  Don't add items here directly] 
     68 
     69 
     70 
     71= Review of RB requests = 
     72 
     73= New, noteworthy and other business = 
     74 
     75= DTNM = 
     76 
     77Proposed: same time, next week.