[DRBD-user] FW: drbd 0.6.12 + heartbeat + synchronization + machine load

Sietse van Zanen sietse at wizdom.nu
Thu May 20 18:01:56 CEST 2004

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


>-----Original Message-----
>From: Lars Ellenberg [mailto:Lars.Ellenberg at linbit.com] 
>Sent: Thursday, May 20, 2004 5:44 PM
>To: drbd-user
>Subject: Re: [DRBD-user] FW: drbd 0.6.12 + heartbeat + 
>synchronization + machine load
>
>/ 2004-05-20 15:07:54 +0200
>\ Sietse van Zanen:
>> >Sir, please get you a mail program /interface, that is able to get 
>> >the quoting right. Please.
>> Yes, sorry about that. Already did sent another mail. 
>Respect that you 
>> went through the trouble of decyphering that crap the Outlook 
>> generated
>> :-)
>
>I know how to use my vim, so its only a minute to trim it, but 
>its anoying :-/
>
>> I subscribed from another email address, hopefully it's better now.
>
>slightly :)
>
>> >it is latency that kills your performance.
>> You have a very good point here. I didn't think that the MD devices 
>> were syncing when I wrote last mail, but they actually were. Decided 
>> to boot one node into single user mode and wait until all md's were 
>> synced. Then started system to make drbd sync, it seems stable at 
>> 10MB/s now (60% done of 70gigs). So that'll need just a little 
>> finetuning at drbd start-up to wait for md device to finish syncing.
>> But see my first response, there still seems to be a system hold-up 
>> somewhere, as heartbeat generates late heartbeat warnings every ten 
>> minutes.
>
>you happen to have some cron job (quotacheck maybe?) scheduled 
>every ten minutes ?
Not that I know of. But I now see, it is also suffering from this when
not syncing, so it must lie somewhere else.
Though they are not as late as when sync is in progress (2-3s compared
to 10-30s). Maybe it has to do with realtime prio of hb.

>
>	Lars Ellenberg
>_______________________________________________
>drbd-user mailing list
>drbd-user at lists.linbit.com
>http://lists.linbit.com/mailman/listinfo/drbd-user
>
>



More information about the drbd-user mailing list