Dell PowerEdge SDS 100 Improving NFS performance on HPC clusters with Dell Flu - Page 23
Cold-cache Sequential Reads, Cold-cache Random Reads,
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Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS Figure 12 shows that on a cold-cache read for sequential tests, the throughput of the DFC configuration drops from a peak of ~3,050 MiB/s to ~1,050 Mi/s. Data needs to be pulled from backend storage and hence the drop in performance. This is lower than the baseline throughput. Figure 12. Cold-cache sequential reads Cold-cache Sequential Reads Throughput in MiB/s 3500 3000 2500 2000 1500 1000 500 0 1 2 4 8 16 32 48 64 Number of concurrent clients DFC-WB DFC-WB-coldcache baseline IOPS Figure 13. Cold-cache random reads Cold-cache Random Reads 140000 120000 100000 80000 60000 40000 20000 0 1 2 4 8 16 32 48 64 Number of concurrent clients FC-WB FC-WB-coldcache baseline 23
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Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS
23
Figure 12 shows that on a cold-cache read for sequential tests, the throughput of the DFC configuration
drops from a peak of ~3,050 MiB/s to ~1,050 Mi/s. Data needs to be pulled from backend storage and
hence the drop in performance. This is lower than the baseline throughput.
Cold-cache sequential reads
Figure 12.
Cold-cache random reads
Figure 13.
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