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Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

There is a latency metric for SSD, but you still can't test it, or it won't tell you anything of value if you could, unless you have a certain kind of enterprise design:

Today low latency can only effectively be addressed by one particular type of storage architecture and that’s an enterprise SSD design. Latency in a technical environment is synonymous with delay. More succinctly latency in terms of a SSD is how long it will take for a request to complete its round trip cycle from the time the request enters the device to the time that it leaves the device with the “payload” in tow.

The latency will be exactly the same for all the examples you mention because it is a metric internal to the SSD (see above "from the time the request enters the device to the time that it leaves the device with the “payload” in tow.").

If you want to know what that value is for your SSD, check with the manufacturer.

Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

There is a latency metric for SSD, but you still can't test it, or it won't tell you anything of value if you could, unless you have a certain kind of enterprise design:

Today low latency can only effectively be addressed by one particular type of storage architecture and that’s an enterprise SSD design. Latency in a technical environment is synonymous with delay. More succinctly latency in terms of a SSD is how long it will take for a request to complete its round trip cycle from the time the request enters the device to the time that it leaves the device with the “payload” in tow.

The latency will be exactly the same for all the examples you mention because it is a metric internal to the SSD (see above "from the time the request enters the device to the time that it leaves the device with the “payload” in tow.").

If you want to know what that value is for your SSD, check with the manufacturer.

Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

There is a latency metric for SSD, but you still can't test it, or it won't tell you anything of value if you could, unless you have a certain kind of enterprise setup:

Today low latency can only effectively be addressed by one particular type of storage architecture and that’s an enterprise SSD design. Latency in a technical environment is synonymous with delay. More succinctly latency in terms of a SSD is how long it will take for a request to complete its round trip cycle from the time the request enters the device to the time that it leaves the device with the “payload” in tow.

Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

There is a latency metric for SSD, but you still can't test it, or it won't tell you anything of value if you could, unless you have a certain kind of enterprise design:

Today low latency can only effectively be addressed by one particular type of storage architecture and that’s an enterprise SSD design. Latency in a technical environment is synonymous with delay. More succinctly latency in terms of a SSD is how long it will take for a request to complete its round trip cycle from the time the request enters the device to the time that it leaves the device with the “payload” in tow.

The latency will be exactly the same for all the examples you mention because it is a metric internal to the SSD (see above "from the time the request enters the device to the time that it leaves the device with the “payload” in tow.").

If you want to know what that value is for your SSD, check with the manufacturer.

Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

If there is another "latency" metric for drives that I'm unaware of, please let me know what that is.

Those utilities you list likely do test drive latency, but only for HDD.

You really can't test the latency of an SSD, because there are no spinning parts to bring the required disk sector under the read-write head, and there is no read-write head for that matter. HDD metrics like rotational latency and seek times don't apply:

For SSDs, most of the attributes related to the movement of mechanical components are not applicable, but the device is actually affected by some other electrically based element that still causes a measurable delay when isolating and measuring that attribute

There is a latency metric for SSD, but you still can't test it, or it won't tell you anything of value if you could, unless you have a certain kind of enterprise setup:

Today low latency can only effectively be addressed by one particular type of storage architecture and that’s an enterprise SSD design. Latency in a technical environment is synonymous with delay. More succinctly latency in terms of a SSD is how long it will take for a request to complete its round trip cycle from the time the request enters the device to the time that it leaves the device with the “payload” in tow.