Bacula-users

Re: [Bacula-users] Multiple CPU core support, 100% usage while restore

2011-01-04 05:04:17
Subject: Re: [Bacula-users] Multiple CPU core support, 100% usage while restore
From: "Tom Sommer" <mail AT tomsommer DOT dk>
To: "Dan Langille" <dan AT langille DOT org>
Date: Tue, 4 Jan 2011 11:00:11 +0100
On Tue, January 4, 2011 03:15, Dan Langille wrote:
> On 1/3/2011 12:57 PM, Tom Sommer wrote:
>
>> I'm currently restoring 1.5 mill. files and it's taking forever.
>>
>>
>> bacula-sd is using 100% CPU, disk IO is apparently low, so I assume
>> it's a CPU issue.
>>
>> My machine has 16GB RAM and 2 CPUs:
>>
>>
>> top - 18:54:53 up 75 days, 10:16,  3 users,  load average: 1.00, 1.00,
>> 1.00
>> Tasks: 172 total,   1 running, 171 sleeping,   0 stopped,   0 zombie
>> Cpu0  : 85.3%us,  1.0%sy,  0.0%ni, 12.7%id,  0.0%wa,  0.0%hi,  1.0%si,
>> 0.0%st
>> Cpu1  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu2  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu3  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu4  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu5  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu6  :  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Cpu7  : 11.9%us,  0.0%sy,  0.0%ni, 88.1%id,  0.0%wa,  0.0%hi,  0.0%si,
>> 0.0%st
>> Mem:  16429812k total, 16345744k used,    84068k free,     1272k buffers
>>  Swap:  3124632k total,      184k used,  3124448k free,  5690688k
>> cached
>>
>> PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>> 4014 root      18   0  109m  19m 1264 S 100.3  0.1 135:07.23 bacula-sd
>>
>>
>>
>> As you can see the process takes 100% CPU usage, on 1 core. Is there
>> any way to make Bacula use all cores? or any other way to speed up the
>> restore - By the looks of it, it could take days to restore the data.
>
> What stage of the restore is occurring?  is it building the file tree?
> Has the restore started?

It's runnning - sending the files to the server.

2 days in, it's completed 50GB of a total of ~220GB.

Not really that impressive.

My files are stored in blocks of 10GB.

// Tom


------------------------------------------------------------------------------
Learn how Oracle Real Application Clusters (RAC) One Node allows customers
to consolidate database storage, standardize their database environment, and, 
should the need arise, upgrade to a full multi-node Oracle RAC database 
without downtime or disruption
http://p.sf.net/sfu/oracle-sfdevnl
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users