Appendix D Quality of Service Guide
Configuration
Name | Description | Default |
|
|
|
RtiosReserve | Amount of reserve in I/Os/sec | Equivalent to |
| from the maximum allowed for | 1MB/sec |
|
| |
| greater than the equivalent to |
|
| 1MB/sec or the amount that can |
|
| be transferred to a single stripe |
|
| line. |
|
|
|
|
RtmbReserve | Amount to reserve in MB/sec | Must be |
| from the maximum allowed for | greater than 1. |
| 1MB/sec | |
|
|
|
RtTokenTimeout | Time in seconds to wait for clients | 2 seconds |
| to respond to a token callback. |
|
|
|
|
RTIO Upper Bound
The limit will be specified in terms of I/Os per second (parameter Rtios) or in terms of MB/sec (parameter Rtmb). Case is not sensitive. Note that I/Os per second are I/Os of any size to the disk subsystem. Either or both may be specified. If both are specified, the lower limit is used to throttle
I/O. If neither is specified, no
[StripeGroup MyStripeGroup]
Rtios 2048
Rtmb 10
The above example specifies that the storage system can support a maximum of 2048 I/Os per second at any instant, aggregate among all the clients, or 10 MB/sec, whichever is lower.
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