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Workload Adaptations for Contended Main-Memory Multicore Transactions- [electronic resource]
Workload Adaptations for Contended Main-Memory Multicore Transactions - [electronic resour...
Workload Adaptations for Contended Main-Memory Multicore Transactions- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214095923
ISBN  
9798379604837
DDC  
004
저자명  
Qian, William Luo.
서명/저자  
Workload Adaptations for Contended Main-Memory Multicore Transactions - [electronic resource]
발행사항  
[S.l.]: : Harvard University., 2022
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2022
형태사항  
1 online resource(120 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
주기사항  
Advisor: Kohler, Eddie.
학위논문주기  
Thesis (Ph.D.)--Harvard University, 2022.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약Database transactions guarantee atomicity for complex queries. Recent work in main-memory multicore transaction processing systems have achieved high transaction processing throughput, especially for uncontended workloads. Many systems achieve high performance by implementing new concurrency control (CC) protocols. Notably, variants of optimistic concurrency control (OCC), such as single-version concurrency control (1VCC) and multi-version concurrency control (MVCC) can perform well even under contention. In this work, I present MSTO, an MVCC system implemented to evaluate CC performance without the impact of basis factors. Experimental results show that while MVCC does outperform over 1VCC in some scenarios, 1VCC is far more resilient to collapse at high contention than previously believed. 1VCC even outperforms MVCC on many high-contention workloads. I then introduce an optimization to reduce write-write conflicts between transactions, deferred updates. In conjunction with the static timestamp splitting optimization that reduces read-write conflicts, deferred updates can be very effective at improving transactional throughput for all CC protocols, including TPC-C throughputs of 5.68x for 1VCC and 4.72x for MVCC compared to their baselines. Finally, I present and evaluate adaptive timestamp splitting, which changes each record's partitioning strategy to accommodate workloads with heterogeneous access patterns. On workloads where 1VCC with deferred updates and adaptive timestamp splitting records the highest throughput, it commits up to 3.98x as many transactions as 1VCC with deferred updates and static timestamp splitting, and up to 4.43x as many transactions as baseline 1VCC. Not all workloads benefit from adaptive timestamp splitting, as baseline MVCC records greater throughput at very high contention.
일반주제명  
Computer science.
일반주제명  
Engineering.
키워드  
Database transactions
키워드  
Transaction processing
키워드  
Optimistic concurrency control
키워드  
Timestamp splitting
기타저자  
Harvard University Engineering and Applied Sciences - Computer Science
기본자료저록  
Dissertations Abstracts International. 84-12B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■020    ▼a9798379604837
■035    ▼a(MiAaPQ)AAI29261819
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a004
■1001  ▼aQian,  William  Luo.▼0(orcid)0000-0002-0856-2134
■24510▼aWorkload  Adaptations  for  Contended  Main-Memory  Multicore  Transactions▼h[electronic  resource]
■260    ▼a[S.l.]:▼bHarvard  University.  ▼c2022
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2022
■300    ▼a1  online  resource(120  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  84-12,  Section:  B.
■500    ▼aAdvisor:  Kohler,  Eddie.
■5021  ▼aThesis  (Ph.D.)--Harvard  University,  2022.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aDatabase  transactions  guarantee  atomicity  for  complex  queries.  Recent  work  in  main-memory  multicore  transaction  processing  systems  have  achieved  high  transaction  processing  throughput,  especially  for  uncontended  workloads.  Many  systems  achieve  high  performance  by  implementing  new  concurrency  control  (CC)  protocols.  Notably,  variants  of  optimistic  concurrency  control  (OCC),  such  as  single-version  concurrency  control  (1VCC)  and  multi-version  concurrency  control  (MVCC)  can  perform  well  even  under  contention.  In  this  work,  I  present  MSTO,  an  MVCC  system  implemented  to  evaluate  CC  performance  without  the  impact  of  basis  factors.  Experimental  results  show  that  while  MVCC  does  outperform  over  1VCC  in  some  scenarios,  1VCC  is  far  more  resilient  to  collapse  at  high  contention  than  previously  believed.  1VCC  even  outperforms  MVCC  on  many  high-contention  workloads.  I  then  introduce  an  optimization  to  reduce  write-write  conflicts  between  transactions,  deferred  updates.  In  conjunction  with  the  static  timestamp  splitting  optimization  that  reduces  read-write  conflicts,  deferred  updates  can  be  very  effective  at  improving  transactional  throughput  for  all  CC  protocols,  including  TPC-C  throughputs  of  5.68x  for  1VCC  and  4.72x  for  MVCC  compared  to  their  baselines.  Finally,  I  present  and  evaluate  adaptive  timestamp  splitting,  which  changes  each  record's  partitioning  strategy  to  accommodate  workloads  with  heterogeneous  access  patterns.  On  workloads  where  1VCC  with  deferred  updates  and  adaptive  timestamp  splitting  records  the  highest  throughput,  it  commits  up  to  3.98x  as  many  transactions  as  1VCC  with  deferred  updates  and  static  timestamp  splitting,  and  up  to  4.43x  as  many  transactions  as  baseline  1VCC.  Not  all  workloads  benefit  from  adaptive  timestamp  splitting,  as  baseline  MVCC  records  greater  throughput  at  very  high  contention.
■590    ▼aSchool  code:  0084.
■650  4▼aComputer  science.
■650  4▼aEngineering.
■653    ▼aDatabase  transactions
■653    ▼aTransaction  processing
■653    ▼aOptimistic  concurrency  control
■653    ▼aTimestamp  splitting
■690    ▼a0984
■690    ▼a0537
■71020▼aHarvard  University▼bEngineering  and  Applied  Sciences  -  Computer  Science.
■7730  ▼tDissertations  Abstracts  International▼g84-12B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0084
■791    ▼aPh.D.
■792    ▼a2022
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16931128▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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