Hi, I created 2 Instances. 1 Instance has an EBS-Volume attached. The EBS-Volume is the storage for the PVFS2. Both instances (m1.large) are inside EC2 us-east-1a.
The performance looks quite well for large files: # mount | grep pvfs /dev/sdc on /pvfs2-storage-space type ext3 (rw) tcp://domU-12-31-38-00-4A-42:3334/pvfs2-fs on /mnt/pvfs2 type pvfs2 (rw) # dd if=/dev/zero of=/tmp/testfile bs=1024 count=1000000 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 6.83677 s, 150 MB/s # pvfs2-cp -t /tmp/testfile /mnt/pvfs2/ Wrote 1024000000 bytes in 24.781117 seconds. 39.407525 MB/seconds When using the PVFS2 Linux Kernel Interface it need much longer: # time cp /tmp/testfile /mnt/pvfs2/test real 2m2.695s user 0m0.000s sys 0m0.020s Any ideas why it needs so much longer when using the Linux Kernel Interface and how to benchmark the performance in a better way? :-) Best Regards, Christian Am Donnerstag, 15. April 2010 schrieb Emmanuel Florac: > Le Thu, 15 Apr 2010 22:51:00 +0200 vous écriviez: > > > Thanks a lot!!! > > Now the module is built. :-) > > Good luck :) I'm interested in knowing how pvfs performs on EC2... > _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
