Date: Sun, 18 May 2008 16:15:55 +0200 From: Daniel Ponticello <daniel@skytek.it> To: freebsd-stable@freebsd.org Subject: Disk access/MPT under ESX3.5 Message-ID: <48303A1B.9000103@skytek.it>
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Hello, i'm running some tests with FreeBSD6.3 and FreeBSD7-Stable, using both AMD64 and I386 arch with both schedulers (ULE and 4BSD) on VmWare ESX3.5 server. Everything runs almost fine, except for disk access. Performance is quite OK (around 60mb/sec), but when accessing disks, System (kernel) CPU load goes up to 70%. This doesn't look normal. The same behavior is present on all test configurations. monitor# dmesg | grep mpt mpt0: <LSILogic 1030 Ultra4 Adapter> port 0x1080-0x10ff mem 0xf4810000-0xf4810fff irq 17 at device 16.0 on pci0 mpt0: [ITHREAD] mpt0: MPI Version=1.2.0.0 da0 at mpt0 bus 0 target 0 lun 0 da0: <VMware Virtual disk 1.0> Fixed Direct Access SCSI-2 device da0: 3.300MB/s transfers da0: Command Queueing Enabled da0: 34816MB (71303168 512 byte sectors: 255H 63S/T 4438C) Any suggestions? Thanks, Daniel -- WBR, Cordiali Saluti, Daniel Ponticello, VP of Engineering Network Coordination Centre of Skytek --- - For further information about our services: - Please visit our website at http://www.Skytek.it ---
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