Reading pftop queue drops (PRIQ)
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So, I'm using PRIQ to balance outbound traffic between VOIP, VPN, and other services (I recently added a 2nd ACK queue for the lesser queues to hopefully throttle inbound DL's a bit).
As you can see below, I've got some recent drops on the VPN queue - which is relatively high on the list.
The weird part is that there really isn't any traffic of note on the two higher queues (and they're not prone to massive spikes), so I'm trying to understand why and how these packets could've been dropped. Does anybody have any suggestions on how this can happen? The queue limits themselves are at default levels (50).
QUEUE BW SCH PRIO PKTS BYTES DROP_P DROP_B QLEN BORROW SUSPEN P/S B/S qACK priq 15 228 15024 0 0 0 0 0 qVoIP priq 7 13088 1154490 0 0 0 3 183 qVPN priq 6 94412 64366720 5 5812 0 16 2299 qOthersHigh priq 4 11167 912868 0 0 0 1 83 qDefault priq 3 105607 56230434 0 0 0 268 30905 qOthersLow priq 2 2618 907874 0 0 0 0 0 qLowACK priq 5 273883 15601822 0 0 0 280 15253 -
A traffic shaper will drop packets to meet its commitments. 5 packets is hardly anything to get worried about. Those packets were probably dropped due to high voip traffic at that specific moment.
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Thanks for the reply.
It just looks weird to me – because I know that there's very, very little traffic on the VOIP lines at the moment.
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Dropping 1 out of nearly 19,000 packets is worrisome? Dropping packets is normal unless you have a synchronous connection directly connecting only two devices.
