Ok,
I'll do it next week.
- Mail original -
De: "dietmar"
À: "aderumier"
Cc: "pve-devel"
Envoyé: Vendredi 11 Novembre 2016 09:45:37
Objet: Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase
performance
> >>I am still quite
> >>I am still quite unsure If we should apply default different
> >>than upstream. Wouldn't it be good enough to document that?
> >>Add a section about "Ceph Performance Tuning" to the docs?
>
> I can make a doc if you want
That would be great.
In the end, I what to have an extra chapter in
etmar"
À: "aderumier"
Cc: "pve-devel"
Envoyé: Vendredi 11 Novembre 2016 06:12:19
Objet: Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase
performance
I am still quite unsure If we should apply default different
than upstream. Wouldn't it be good enough to
I am still quite unsure If we should apply default different
than upstream. Wouldn't it be good enough to document that?
Add a section about "Ceph Performance Tuning" to the docs?
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imes, enabling logging can hide race conditions and other bugs by changing
the timing of events. Keep this in mind when debugging.
- Mail original -
De: "dietmar"
À: "aderumier"
Cc: "pve-devel"
Envoyé: Mercredi 9 Novembre 2016 16:00:04
Objet: Re: [pve-dev
> >>Seems the default is 0/5 - why?
>
> 0 is file logging
> 5 is memory logging.
>
> The memory stats at display in output in case of assert or fatal signal.
Yes. But I do not understand why what influence performance? Or does it
trigger additional logging while everything runs normal?
___
ers as they don't known how to tune
theses debug values)
- Mail original -
De: "dietmar"
À: "Alexandre Derumier" , "pve-devel"
Envoyé: Mercredi 9 Novembre 2016 12:44:38
Objet: Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase
performan
> any comment to commit this ?
Seems the default is 0/5 - why?
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any comment to commit this ?
- Mail original -
De: "Alexandre Derumier"
À: "pve-devel"
Cc: "Alexandre Derumier"
Envoyé: Samedi 5 Novembre 2016 15:43:12
Objet: [PATCH] rbdplugin : disable debug_ms to increase performance
This increase iops and decrease latencies by around 30%
debus_m
é: Dimanche 6 Novembre 2016 23:15:39
Objet: Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase
performance
> Am 05.11.2016 um 15:43 schrieb Alexandre Derumier :
>
> This increase iops and decrease latencies by around 30%
Alexandre,
apart from debug_ms = 0/0,
> Am 05.11.2016 um 15:43 schrieb Alexandre Derumier :
>
> This increase iops and decrease latencies by around 30%
Alexandre,
apart from debug_ms = 0/0, what are the currently suggested defaults for these
performance tweaks?
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This increase iops and decrease latencies by around 30%
debus_ms=1 (current)
test: (groupid=0, jobs=1): err= 0: pid=1222: Sat Nov 5 10:04:23 2016
read : io=15360MB, bw=127472KB/s, iops=31867, runt=123389msec
slat (usec): min=1, max=9774, avg= 5.91, stdev=16.19
clat
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