When memory is low, ext3 gets a bit sluggish cursor getting jumpy etc. I say ext3 because I don't see a similar behavior with ext2. What are the ext3 tuning variables that I can try? For example, I see a message like "commit interval 5 seconds" in /var/log/dmesg.
As a reference point, I use ext3 on two Linux NFS servers with 1GB of RAM and about 55GB of storage space. Both of my servers are down to about 3MB of available memory and the disks are very full. I have not seen any performance slowdowns, even under these conditions. Is it possible your servers are doing a lot of swapping to virtual memory? BTW, I'm running 2.2.19pre6 with ext3 (5e) so YMMV with other versions. --Shawn PS: Shouldn't you be using JFS since you're an IBMer? ;) ext3-users-admin@redhat.com wrote on 07/25/2001 02:27:19 PM:> When memory is low, ext3 gets a bit sluggish cursor getting jumpy etc. I > say ext3 because I don't see a similar behavior with ext2. What arethe> ext3 tuning variables that I can try? For example, I see a message like > "commit interval 5 seconds" in /var/log/dmesg. > > > > _______________________________________________ > Ext3-users mailing list > Ext3-users@redhat.com > https://listman.redhat.com/mailman/listinfo/ext3-users
>Folks, > >it's really important that you mention the ext3 version when >reporting these things.This is ext3 that comes with beta3 kernel 2.4.6-3. Going back to the original mail. Is there some ext3 tuning document or such? I googled the net which came back empty. Could those in the know drop me a line?>As a reference point, I use ext3 on two Linux NFS servers with 1GB of RAM >and about 55GB of storage space. Both of my servers are down to about 3MB >of available memory and the disks are very full. I have not seen any >performance slowdowns, even under these conditions. Is it possible yourservers are doing a lot of swapping to virtual memory?> >> When memory is low, ext3 gets a bit sluggish cursor getting jumpy etc. I >> say ext3 because I don't see a similar behavior with ext2. What are >the >> ext3 tuning variables that I can try? For example, I see a message like >> "commit interval 5 seconds" in /var/log/dmesg.System memory is 2GB. The app that I am running writes 4-5 GB worth of small files. There is lot of dirty pages in the memory.>PS: Shouldn't you be using JFS since you're an IBMer? ;)Not an advocate of one file system or the other.