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Queue Depth

Queue depth is the number of tickets currently open and awaiting agent handling, measured at a point in time or as an average over a period. It is a leading indicator of whether the team is about to miss service targets.

Why it matters for B2B support

Queue depth predicts SLA breaches before customers feel them. If a team is processing 12 tickets per hour while 30 tickets per hour are arriving, a queue depth of 40 can swell past 160 in roughly 3 hours. Teams that watch queue depth in real time can trigger surge responses like bringing in off-shift agents, pausing non-support work, or fast-routing simple tickets before the backlog cascades. In B2B SaaS, queue-depth spikes above 3× baseline are one of the most reliable indicators of a product release issue or emerging P1 incident.

Key benchmarks

queue depth spike threshold that reliably predicts P1 incident or product surge

12

average tickets processed per agent per hour in B2B technical support

68%

of B2B SLA breaches preceded by a queue depth spike > 2× baseline within 90 minutes

25 tickets

maximum queue depth target for maintaining P1 SLA in 10-agent B2B teams

How Altor helps

Altor lowers queue depth by accelerating the diagnosis step that keeps technical tickets sitting in open status. Faster investigation means tickets leave the queue instead of aging inside it.

FAQ

Why is queue depth a better early-warning signal than SLA breach count?

Because queue depth moves before SLA timers expire. Once you are counting breaches, the operational problem has already reached the customer.

How often should queue depth be monitored?

Continuously during support hours and at least every 15 minutes during releases or incidents. Real-time visibility is what makes queue depth useful operationally.

What should a team do when queue depth spikes?

Trigger surge staffing, pause non-essential meetings, and prioritize technical diagnosis on the oldest or highest-risk tickets first. The goal is to stop compounding backlog, not just work harder.

Related terms

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