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Re: [Xen-users] slow network throughput, how to improve?

Date: Wed, 24 Nov 2010 19:29:05 +0200

Cc: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Wed, 24 Nov 2010 09:30:55 -0800

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List-id: Xen user discussion <xen-users.lists.xensource.com>

On Wed, Nov 24, 2010 at 7:15 PM, Richie <listmail@xxxxxxxxxxxx> wrote: > On 11/24/2010 03:03 AM, Rudi Ahlers wrote: >> >> 100% 1163MB >> 29.1MB/s 00:40 >> >> >> iperf indicates that the network throughput is about 930MB though: >> >> root@zaxen01:[~]$ iperf -s >> ------------------------------------------------------------ >> Server listening on TCP port 5001 >> TCP window size: 85.3 KByte (default) >> ------------------------------------------------------------ >> [ 4] local 196.34.x.x port 5001 connected with 196.34.x.x port 45453 >> [ ID] Interval Transfer Bandwidth >> [ 4] 0.0-10.0 sec 1.09 GBytes 935 Mbits/sec >> > > 29.1MB/s (megabytes) is 232.8 megabit. Yes, you still have room for > improvement in that regard. You said sata drives, but what spec.? Any idea > on your throughput for your source/destinatation hard drives? Would they > both sustain higher than 29.9MB/s ? > > _______________________________________________ Hi Richie, zaxen01: Seagate ST31000340AS 1GB HDD, and zaxen02: root@zaxen02:[~]$ cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST3250318AS Rev: HP11 Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST3250318AS Rev: HP11 Type: Direct-Access ANSI SCSI revision: 05 These drives are setup in software RAID1 Some more testing: zaxen01, with 1x SATAII HDD, 8GB RAM, Core2Quad CPU, Intel Server grade motherboard: root@zaxen01:[~]$ dd if=/dev/zero of=filename bs=1024 count=1000000 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 12.2736 seconds, 83.4 MB/s zaxen02, with 2x SATAII HDD setup in software RAID1, 8GB RAM, Core2Quad CPU, SuperMicro Server grade motherboard: root@zaxen02:[~]$ dd if=/dev/zero of=filename bs=1024 count=1000000 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 6.0765 seconds, 169 MB/s Inhouse server, with 2x SATAII HDD in software RAID1, 2GB RAM, Core2Duo CPU, using Gigabyte motherboard: [root@intranet ~]# dd if=/dev/zero of=filename bs=1024 count=1000000 1000000+0 records in 1000000+0 records out 1024000000 bytes (1.0 GB) copied, 10.381 seconds, 98.6 MB/s -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users

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