Gerhard Lazu
๐ค SpeakerAppearances Over Time
Podcast Appearances
The MGT uptime, I like it.
It's telling me which of those, that long list of counters is important.
From a system perspective, the threading model is perfectly dialed in.
300 threads across two pools with a zero thread limited and zero thread queue length.
The kernel is in context switching unnecessarily and we aren't starting for execution units.
However, we have a critical IO and storage allocation bottleneck in the SMF.
The file, I'm not sure what Steve Doerr means.
The problem is SMF disk C fail is at 19,000 plus against only request at a 73% failure rate for disk allocations.
The G space, in the G space we have only 145 megabytes while we have 48 gigabytes used.
You're effectively out of contiguous blocks or hitting the ceiling of the pre-allocated file.
That sounds right.
Varnish is forced to fall back to SMA RAM or simply not cache large objects.
While SMA has 2.1 gigabytes free, the disk is thrashing.
The hardware, if this is spinning glass, your IO8 is likely spinning.
It's not.
It's NVMe.
So yeah, there's quite a few things there.
Interesting.
Is low relative, suggesting the lock contention on the shared memory log is negligible.
Nice.