I'd suggest checking your hardware (esp. SMART status of ATA drives,
cables etc)
I see in your logs the following :-
[ 6124.754413] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x50000 action 0x6
frozen
[ 6124.754428] ata1: SError: { PHYRdyChg CommWake }
[ 6124.754437] ata1.00: failed command: WRITE DMA
[ 6124.754455] ata1.00: cmd ca/00:08:18:e0:64/00:00:00:00:00/e0 tag 18 dma 4096
out
res 40/00:00:00:01:80/00:00:00:00:00/00 Emask 0x4
(timeout)
[ 6124.754462] ata1.00: status: { DRDY }
[ 6124.754472] ata1: hard resetting link
[ 6125.068646] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
[ 6125.093229] ata1.00: configured for UDMA/133
[ 6125.103327] ahci 0000:00:17.0: port does not support device sleep
[ 6125.103407] ata1: EH complete
[ 6125.103774] ata1.00: Enabling discard_zeroes_data
NOTE: SMART doesn't detect everything, but it's where I'd start, beyond
validating your backups in case this is warning of a failing
component/device. This may not be your only issue though.
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https://bugs.launchpad.net/bugs/1851451
Title:
Performance is not good system freeze a lot of time
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