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ALMA Integrated Computing Team Coordination & Planning Meeting #1 Santiago, 17-19 April 2013

ALMA Integrated Computing Team Coordination & Planning Meeting #1 Santiago, 17-19 April 2013. Monitoring: Report of Current Status Tzu-Chiang Shen. Monitoring Status. Insertion into ALMALOG database has been disabled since 24/Nov/2012. (APO-147)

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ALMA Integrated Computing Team Coordination & Planning Meeting #1 Santiago, 17-19 April 2013

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  1. ALMA Integrated Computing TeamCoordination & Planning Meeting #1Santiago, 17-19 April 2013 Monitoring: Report of Current Status Tzu-Chiang Shen

  2. Monitoring Status • Insertion into ALMALOG database has been disabled since 24/Nov/2012. (APO-147) • This includes: Monitoring data, XML logs, WEATER data. • Monthly data volume is bigger the ASM GROUP4, causing: • Excessive DBA effort dedicate in monthly rotation, daily partition and backup activities • High risk to block operation since TMCDB data is being saved in the same database

  3. Work Around • Monitoring data: • Are being persisted in text file format. • Accessible thought the web: • http://monitordata.osf.alma.cl • XML logs : • Equivalent files (but with DEBUG level logs) are available within STEs in short period. • For long term, files are moved to a storage and accessible through the web: • http://computing-logs.aiv.alma.cl • Weather data: • Storage in local MYSQL database • Accessible through the web • http://weather.aiv.alma.cl/data/data/files/

  4. The Work Around Data Flow

  5. TMCTextArchiver’s Buffer Internal buffer Enqueue Dequeue Drop

  6. Data Write Performance (5 min)

  7. Data Write Performance (6 hours)

  8. Maximum Write Throughput Test

  9. Current Monitoring Data Rate and Data Size • 56 antennas + CentralLO’s devices • Total data rate: ~5000 clobs/s • ~ 89.2 clobs/s/antenna • # Monitor Points per antenna type • DV: 2,179; DA: 2,194; CM: 2,438; PM: 2,474 • Currents Size of Monitor Data per antenna type (daily) • DV: 241MB; DA:246MB; CM:301MB; PM:296MB • Current daily monitoring data size: ~ 20 GB (in ~120k files)

  10. Fluctuation of Monitoring Data • Expected data rate with 66 antennas: • ~ 6000 - 7000 clobs/s ~ 25 - 30 GB/day • ~ equivalent a 310KByte/s or 2,485Mbit/s • Reasons of Fluctuations: • Sampling rate of BACI properties • # of system restarts • Type of observation • FE devices are being monitored only if the specific band has been turned on. • # of hwDevice in hwOperational state.

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