当应用系统性能变慢的时候,系统管理员可能认为是FC SAN的问题导致。存储管理员可以直接登录SanScout平台,实时监控影响应用系统的Initiator - Target - LUN的性能参数。
SanScout目前对于I/O支持如下的性能相关参数:
读命令 (READ CMD)
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Read commands issued
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Read commands completed
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min read size
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max read size
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Read data MB / sec
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Read data frames / sec
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Min cmd to First Data time (ms)
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Max cmd to First Data time (ms)
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Avg cmd to first data time (ms)
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Min last data to response time (ms)
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Max last data to response time (ms)
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Avg last data to response time (ms)
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min read exchange completion time (ms)
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Max read exchange completion time (ms)
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Avg Read exchange completion time (ms)
写命令 (WRITE CMD)
- Write commands issued
- Write commands completed
- Min Write size
- Max Write size
- Write MB /s
- Write data frames /sec
- Min cmd to transfer_ready time (ms)
- Max cmd to transfer_ready time (ms)
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Avg cmd to transfer_ready a time (ms)
- Min transfer_ready to first data time (ms)
- Max transfer_ready to first data time (ms)
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Avg transfer_ready to first data time (ms)
- Min last data to response time (ms)
- Max last data to response time (ms)
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Avg last data to response time (ms)
- min write exchange completion time (ms)
- Max write exchange completion time (ms)
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Avg Write exchange completion time (ms)