This is kind of a mystery. Is it the same linux client in both cases? -----Original Message----- From: Pete Ashdown [mailto:[email protected]] Sent: Friday, May 27, 2011 7:06 PM To: Discussion list for OpenIndiana Subject: [OpenIndiana-discuss] NFS Linux client slow reads
Both NFS tests were conducted on the same hardware, with 4 aggregated 802.3ad gig-e ports on the server and 2 aggregated 802.3ad gig-e ports on the client. The OI server has 24GB RAM, 8 2TB Seagate drives, and a 32GB SSD for ZIL and a 160GB SSD for L2ARC. Test 1: Ubuntu Linux server & client # dd if=/dev/zero of=test bs=1024 count=1M 1073741824 bytes (1.1 GB) copied, 13.3347 s, 80.5 MB/s # echo 3 > /proc/sys/vm/drop_caches (clear Linux file buffers) # dd if=test of=/dev/null 1073741824 bytes (1.1 GB) copied, 10.0029 s, 107 MB/s Test 2: OI 148 server & Ubuntu Linux client # dd if=/dev/zero of=test bs=1024 count=1M 1073741824 bytes (1.1 GB) copied, 12.0275 s, 89.3 MB/s # echo 3 > /proc/sys/vm/drop_caches # dd if=test of=/dev/null bs=1024 1073741824 bytes (1.1 GB) copied, 112.205 s, 9.6 MB/s <--- ~10% of Linux server Test 3: On the OI server # dd if=/dev/zero of=test bs=1024 count=1M 1073741824 bytes (1.1 GB) copied, 7.79955 s, 138 MB/s # dd if=test of=/dev/null bs=1024 1073741824 bytes (1.1 GB) copied, 3.38502 s, 317 MB/s Any help is appreciated. _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
