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sys/net/altq/altq_hfsc.h
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| * the raw Pentium TSC (Timestamp Counter) value is used. | * the raw Pentium TSC (Timestamp Counter) value is used. | ||||
| * virtual time is also calculated in this time scale. | * virtual time is also calculated in this time scale. | ||||
| * y-axis: unit is byte. | * y-axis: unit is byte. | ||||
| * | * | ||||
| * the service curve parameters are converted to the internal | * the service curve parameters are converted to the internal | ||||
| * representation. | * representation. | ||||
| * the slope values are scaled to avoid overflow. | * the slope values are scaled to avoid overflow. | ||||
| * the inverse slope values as well as the y-projection of the 1st | * the inverse slope values as well as the y-projection of the 1st | ||||
| * segment are kept in order to to avoid 64-bit divide operations | * segment are kept in order to avoid 64-bit divide operations | ||||
| * that are expensive on 32-bit architectures. | * that are expensive on 32-bit architectures. | ||||
| * | * | ||||
| * note: Intel Pentium TSC never wraps around in several thousands of years. | * note: Intel Pentium TSC never wraps around in several thousands of years. | ||||
| * x-axis doesn't wrap around for 1089 years with 1GHz clock. | * x-axis doesn't wrap around for 1089 years with 1GHz clock. | ||||
| * y-axis doesn't wrap around for 4358 years with 1Gbps bandwidth. | * y-axis doesn't wrap around for 4358 years with 1Gbps bandwidth. | ||||
| */ | */ | ||||
| /* kernel internal representation of a service curve */ | /* kernel internal representation of a service curve */ | ||||
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