<![CDATA[Jul 9 01:56:43 kernel: 603.390440 [3911] netmap_transmit em1 full hwcur 221 hwtail 95 qlen 125]]>I got these randomly but very often seconds apart.

I scratched my head with this because I only got it on em1 and not em0 as well.

I have Suricata running inline on both.

This is my loader.conf

kern.cam.boot_delay="10000"
kern.ipc.nmbclusters="2000000"
kern.ipc.nmbjumbop="524288"
kern.ipc.nmbjumbo9="524288"
dev.em.0.fc="0"
dev.em.1.fc="0"
dev.netmap.buf_size="16384"
autoboot_delay="3"
hw.usb.no_pf="1"
net.pf.request_maxcount="2000000"

After I changed this; dev.netmap.buf_size="16384" from "2048" to first "4096" to no avail, I upped it to "8192".

That made the netmap become less frequent. I upped it once again to "16384" and so far so good.

No errors in the logs and on the console so far.

]]>https://forum.netgate.com/topic/155143/jul-9-01-56-43-kernel-603-390440-3911-netmap_transmit-em1-full-hwcur-221-hwtail-95-qlen-125RSS for NodeWed, 15 Jul 2026 01:06:54 GMTThu, 09 Jul 2020 00:15:59 GMT60<![CDATA[Reply to Jul 9 01:56:43 kernel: 603.390440 [3911] netmap_transmit em1 full hwcur 221 hwtail 95 qlen 125 on Thu, 09 Jul 2020 00:35:51 GMT]]>I was a little to hasty.

Errors coming again...

Despite changing the dev.netmap.buf_size="16384"

Output of sysctl -a | grep netmap still looks the same and no change to any values.

Its like its hardcoded and cant be changed??

device netmap
dev.netmap.ixl_rx_miss_bufs: 0
dev.netmap.ixl_rx_miss: 0
dev.netmap.iflib_rx_miss_bufs: 0
dev.netmap.iflib_rx_miss: 0
dev.netmap.iflib_crcstrip: 1
dev.netmap.bridge_batch: 1024
dev.netmap.default_pipes: 0
dev.netmap.priv_buf_num: 4098
dev.netmap.priv_buf_size: 2048
dev.netmap.buf_curr_num: 163840
dev.netmap.buf_num: 163840
dev.netmap.buf_curr_size: 2048
dev.netmap.buf_size: 2048
dev.netmap.priv_ring_num: 4
dev.netmap.priv_ring_size: 20480
dev.netmap.ring_curr_num: 200
dev.netmap.ring_num: 200
dev.netmap.ring_curr_size: 36864
dev.netmap.ring_size: 36864
dev.netmap.priv_if_num: 2
dev.netmap.priv_if_size: 1024
dev.netmap.if_curr_num: 100
dev.netmap.if_num: 100
dev.netmap.if_curr_size: 1024
dev.netmap.if_size: 1024
dev.netmap.ptnet_vnet_hdr: 1
dev.netmap.generic_rings: 1
dev.netmap.generic_ringsize: 1024
dev.netmap.generic_mit: 100000
dev.netmap.generic_hwcsum: 0
dev.netmap.admode: 0
dev.netmap.fwd: 0
dev.netmap.txsync_retry: 2
dev.netmap.mitigate: 1
dev.netmap.no_pendintr: 1
dev.netmap.no_timestamp: 0
dev.netmap.verbose: 0
dev.netmap.ix_rx_miss_bufs: 0
dev.netmap.ix_rx_miss: 0
dev.netmap.ix_crcstrip: 0

]]>https://forum.netgate.com/post/923342https://forum.netgate.com/post/923342Thu, 09 Jul 2020 00:35:51 GMT