Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

Ok, I'll do it next week. - Mail original - De: "dietmar" <diet...@proxmox.com> À: "aderumier" <aderum...@odiso.com> Cc: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Vendredi 11 Novembre 2016 09:45:37 Objet: Re: [pve-devel] [PATCH] rbdpl

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 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

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

t; <diet...@proxmox.com> À: "aderumier" <aderum...@odiso.com> Cc: "pve-devel" <pve-devel@pve.proxmox.com> 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

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 document that? Add a section about "Ceph Performance Tuning" to the docs? ___ pve-devel mailing list pve-devel@pve.proxmox.com

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

es, 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" <diet...@proxmox.com> À: "aderumier" <aderum...@odiso.com> Cc: "pve-devel" <pve-

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

> >>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?

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

users as they don't known how to tune theses debug values) - Mail original - De: "dietmar" <diet...@proxmox.com> À: "Alexandre Derumier" <aderum...@odiso.com>, "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Mercredi 9 Novembre 2016 12:44:38 Objet

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

> any comment to commit this ? Seems the default is 0/5 - why? ___ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

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

Re: [pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

devel" <pve-devel@pve.proxmox.com> Envoyé: 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 <aderum...@odiso.com>: > > This increase iops and

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, what are the currently suggested defaults for these performance tweaks? ___

[pve-devel] [PATCH] rbdplugin : disable debug_ms to increase performance

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