DocumentCode :
2906402
Title :
A Method for Improving Concurrent Write Performance by Dynamic Mapping Virtual Storage System Combined with Cache Management
Author :
Li, Fen ; Bu, Qingzhong ; Li, Weiwei ; Meng, Xiaoxuan ; Xu, Lu ; Zhang, Jiangang
Author_Institution :
Inst. of Comput. Technol., Beijing, China
fYear :
2011
fDate :
7-9 Dec. 2011
Firstpage :
48
Lastpage :
55
Abstract :
The paper presents a new dynamic mapping virtual storage system, which is characterized by: (a) distribute storage resources according to need, thus improving storage resource utilization, (b) more fundamentally, through write-anywhere pattern to sequentialize concurrent write requests by dynamic address mapping mechanism, thus improving concurrent write performance for applications. Meanwhile, taking into account imperfection small size write requests handling and the negative impact on read performance, we combine the system with CBD system which is responsible for optimizing cache management. We have implemented our virtual storage system in Linux kernel 2.6.18 as a pseudo device driver. The experiment results show that concurrent write bandwidth approaches raw disk write performance. And in 64-stream concurrent write case, E-ASD can outperform concurrent write bandwidth of LVM by up to 160%, and its max single-stream read loss is less than 25% compared to LVM, with concur-rent read performance close to each other. Read performance still has space to be improved given larger cache and proper prefetching.
Keywords :
Linux; cache storage; virtual storage; Linux kernel 2.6.18; cache management; cache management optimisation; concurrent write performance improvement; distribute storage resources; dynamic mapping virtual storage system; mapping mechanism; pseudo device driver; storage resource utilization; Aggregates; Bandwidth; Layout; Linux; Performance evaluation; Resource management; Variable speed drives; E-ASD; concurrent write performance; dynamic mapping; virtual storage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Parallel and Distributed Systems (ICPADS), 2011 IEEE 17th International Conference on
Conference_Location :
Tainan
ISSN :
1521-9097
Print_ISBN :
978-1-4577-1875-5
Type :
conf
DOI :
10.1109/ICPADS.2011.7
Filename :
6121259
Link To Document :
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