Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Jure Pečar
On Tue, 04 Jul 2006 19:37:34 -0700 Hans Reiser [EMAIL PROTECTED] wrote: Mike Benoit wrote: Hi Jeff, I just tried the patch you suggested and it didn't make a difference. The load still spikes as soon as the free space falls below ~10%. Jeff, please audit your code for what happens

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Mike Benoit
On Thu, 2006-07-06 at 12:58 +0200, Jure Pečar wrote: On Tue, 04 Jul 2006 19:37:34 -0700 Hans Reiser [EMAIL PROTECTED] wrote: Mike Benoit wrote: Hi Jeff, I just tried the patch you suggested and it didn't make a difference. The load still spikes as soon as the free space falls

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Jonathan Briggs
On Thu, 2006-07-06 at 08:43 -0700, Mike Benoit wrote: [snip] My desktop machine (v2.6.16, same as my MythTV box) is running with 9% free space right now and it is not experiencing any slow down. I think the problem is caused by the usage pattern of MythTV and how it simultaneously streams one

Re: Reiser4 cowardly panic 2.6.17-mm5

2006-07-06 Thread Joe Feise
This seems to be fixed with 2.6.17-mm6. -Joe Joe Feise writes: I consistently get cowardly panic errors during bootup with 2.6.17-mm5 (I also had that with -mm3, and had hoped -mm5 would have fixed it.) It corrupts the partition this is happening on (/var) I don't have dmesg or syslog

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Toby Thain
On 6-Jul-06, at 11:43 AM, Mike Benoit wrote: On Thu, 2006-07-06 at 12:58 +0200, Jure Pečar wrote: On Tue, 04 Jul 2006 19:37:34 -0700 Hans Reiser [EMAIL PROTECTED] wrote: Mike Benoit wrote: Hi Jeff, I just tried the patch you suggested and it didn't make a difference. The load still

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Jeff Mahoney
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mike Benoit wrote: My desktop machine (v2.6.16, same as my MythTV box) is running with 9% free space right now and it is not experiencing any slow down. I think the problem is caused by the usage pattern of MythTV and how it simultaneously streams

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Hans Reiser
Jeff Mahoney wrote: Ok, if you run into the problem again, can you dump the metadata before freeing the space? The code itself looks sound, and I'm wondering if you've managed to create pathological fragmentation that's mucking things up. There should be no possible fragmentation that

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Jeff Mahoney
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hans Reiser wrote: There should be no possible fragmentation that would increase CPU usage like that. With the current algorithms, in which you check one field in the bitmap to see if it has any free blocks, it should not be possible for scanning

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Mike Benoit
On Thu, 2006-07-06 at 14:02 -0400, Jeff Mahoney wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mike Benoit wrote: My desktop machine (v2.6.16, same as my MythTV box) is running with 9% free space right now and it is not experiencing any slow down. I think the problem is caused by

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Jeff Mahoney
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mike Benoit wrote: On Thu, 2006-07-06 at 14:02 -0400, Jeff Mahoney wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mike Benoit wrote: My desktop machine (v2.6.16, same as my MythTV box) is running with 9% free space right now and it is not

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Mike Benoit
On Thu, 2006-07-06 at 14:19 -0400, Jeff Mahoney wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hans Reiser wrote: There should be no possible fragmentation that would increase CPU usage like that. With the current algorithms, in which you check one field in the bitmap to see if

Re: ReiserFS v3 choking when free space falls below 10%?

2006-07-06 Thread Hans Reiser
Jeff, I am suspicious, because I know that 90% is a magic number in your code.