On my laptop with a SATA ssd I also have higher reported times than
process real time, albeit not by such a huge margin. Only a factor of
2-4 too high.
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Testing with http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc2/
shows:
Writes on the sd card are still reported about a factor 1000 too high, e.g.
2700ms = 27000s where I expect around 27s.
I tried on an nvme ssd with the same result, just smaller numbers and
/dev/urandom was the bottl
** Tags added: kernel-bug-exists-upstream
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Title:
/proc/diskstats shows weird values
Status in linux package in Ubuntu:
Confirmed
I noticed the bug only after I installed munin recently. I don't know
how long it may have existed before.
I will test the mainline kernel as soon as I can but since the machine
is used in production and can't be rebooted at will so testing probably
be 2 weeks out.
Thanks for your reply.
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183063/+files/ProcCpuinfoMinimal.txt
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apport information
** Tags added: apport-collected
** Description changed:
For one block device on one of my servers munin shows abnormally high
latency.
When querying /proc/diskstats manually, the device in question shows:
8 32 sdc 973668 361965 64248290 10224376 755130 51816
apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183062/+files/Lsusb.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183061/+files/Lspci.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183060/+files/IwConfig.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183064/+files/ProcEnviron.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183068/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183065/+files/ProcInterrupts.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183059/+files/CurrentDmesg.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183066/+files/ProcModules.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1790181/+attachment/5183067/+files/UdevDb.txt
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** Package changed: munin (Ubuntu) => linux (Ubuntu)
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Title:
/proc/diskstats shows weird values
Status in linux package in Ubuntu:
16 matches
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