{"title":"基于rdma的广域网存储协议性能研究","authors":"Weikuan Yu, N. Rao, P. Wyckoff, J. Vetter","doi":"10.1109/PDSW.2008.4811885","DOIUrl":null,"url":null,"abstract":"Because of its high throughput, low CPU utilization, and direct data placement, RDMA (Remote Direct Memory Access) has been adopted for transport in a number of storage protocols, such as NFS and iSCSI. In this presentation, we provide a performance evaluation of RDMA-based NFS and iSCSI on Wide-Area Network (WAN). We show that these protocols, though benefit from RDMA on Local Area Network (LAN) and on WAN of short distance, are faced with a number of challenges to achieve good performance on long distance WAN. This is because of (a) the low performance of RDMA reads on WAN, (b) the small 4 KB chunks used in NFS over RDMA, and(c)the lack of RDMA capability in handling discontinuous data. Our experimental results document the performance behavior of these RDMA-based storage protocols on WAN.","PeriodicalId":227342,"journal":{"name":"2008 3rd Petascale Data Storage Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":"{\"title\":\"Performance of RDMA-capable storage protocols on wide-area network\",\"authors\":\"Weikuan Yu, N. Rao, P. Wyckoff, J. Vetter\",\"doi\":\"10.1109/PDSW.2008.4811885\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Because of its high throughput, low CPU utilization, and direct data placement, RDMA (Remote Direct Memory Access) has been adopted for transport in a number of storage protocols, such as NFS and iSCSI. In this presentation, we provide a performance evaluation of RDMA-based NFS and iSCSI on Wide-Area Network (WAN). We show that these protocols, though benefit from RDMA on Local Area Network (LAN) and on WAN of short distance, are faced with a number of challenges to achieve good performance on long distance WAN. This is because of (a) the low performance of RDMA reads on WAN, (b) the small 4 KB chunks used in NFS over RDMA, and(c)the lack of RDMA capability in handling discontinuous data. Our experimental results document the performance behavior of these RDMA-based storage protocols on WAN.\",\"PeriodicalId\":227342,\"journal\":{\"name\":\"2008 3rd Petascale Data Storage Workshop\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2008-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"15\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2008 3rd Petascale Data Storage Workshop\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PDSW.2008.4811885\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 3rd Petascale Data Storage Workshop","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PDSW.2008.4811885","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Performance of RDMA-capable storage protocols on wide-area network
Because of its high throughput, low CPU utilization, and direct data placement, RDMA (Remote Direct Memory Access) has been adopted for transport in a number of storage protocols, such as NFS and iSCSI. In this presentation, we provide a performance evaluation of RDMA-based NFS and iSCSI on Wide-Area Network (WAN). We show that these protocols, though benefit from RDMA on Local Area Network (LAN) and on WAN of short distance, are faced with a number of challenges to achieve good performance on long distance WAN. This is because of (a) the low performance of RDMA reads on WAN, (b) the small 4 KB chunks used in NFS over RDMA, and(c)the lack of RDMA capability in handling discontinuous data. Our experimental results document the performance behavior of these RDMA-based storage protocols on WAN.
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