Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-09 Thread Kern Sibbald
On Saturday 10 April 2010 04:21:40 Craig Ringer wrote: > Phil Stracchino wrote: > > On 04/09/10 02:35, Henrik Johansen wrote: > >> I have spend some time profiling the bacula-sd under production load on > >> Solaris. Besides checking for signs of lock contention and memory / CPU > >> usage issues I

Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-09 Thread Henrik Johansen
On 04/10/10 04:21 AM, Craig Ringer wrote: > Phil Stracchino wrote: >> On 04/09/10 02:35, Henrik Johansen wrote: >>> I have spend some time profiling the bacula-sd under production load on >>> Solaris. Besides checking for signs of lock contention and memory / CPU >>> usage issues I also tracked the

Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-09 Thread Craig Ringer
Phil Stracchino wrote: > On 04/09/10 02:35, Henrik Johansen wrote: >> I have spend some time profiling the bacula-sd under production load on >> Solaris. Besides checking for signs of lock contention and memory / CPU >> usage issues I also tracked the I/O statistics for each file descriptor >> o

Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-09 Thread Henrik Johansen
On 04/ 9/10 01:40 PM, Phil Stracchino wrote: > On 04/09/10 02:35, Henrik Johansen wrote: >> I have spend some time profiling the bacula-sd under production load on >> Solaris. Besides checking for signs of lock contention and memory / CPU >> usage issues I also tracked the I/O statistics for each f

Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-09 Thread Phil Stracchino
On 04/09/10 02:35, Henrik Johansen wrote: > I have spend some time profiling the bacula-sd under production load on > Solaris. Besides checking for signs of lock contention and memory / CPU > usage issues I also tracked the I/O statistics for each file descriptor > opened within the bacula-sd pr

Re: [Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-08 Thread Henrik Johansen
On 04/ 8/10 03:10 PM, Craig Ringer wrote: > Hi > > After discussion on -users about concurrent writes to disk volumes by > the sd, which raised concerns about fragmentation and impact of > concurrency on overall write performance, I thought I'd do some testing > to look into it. I have spend some

[Bacula-devel] tool for concurrent write testing with/without posix_fallocate(...)

2010-04-08 Thread Craig Ringer
Hi After discussion on -users about concurrent writes to disk volumes by the sd, which raised concerns about fragmentation and impact of concurrency on overall write performance, I thought I'd do some testing to look into it. I've just put together a simple tool that uses a specified number of th