$ sudo strace -ff -p 10575 ... read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, "", 1) = 0 read(0, <unfinished ...> Process 10575 detached по контрол-С
контролер набортный, это тот же AHCI на 5000 платформе... два диска sata (/dev/sda & /dev/sdb) Model: ST3250620NS Type: Direct-Access ANSI SCSI revision: 05 ===dmesg=== ... ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 6 ports 3 Gbps 0x3f impl SATA mode ahci 0000:00:1f.2: flags: 64bit ncq pm led pmp slum part ata1: SATA max UDMA/133 cmd 0xFFFFC20000116500 ctl 0x0 bmdma 0x0 irq 74 ata2: SATA max UDMA/133 cmd 0xFFFFC20000116580 ctl 0x0 bmdma 0x0 irq 74 ata3: SATA max UDMA/133 cmd 0xFFFFC20000116600 ctl 0x0 bmdma 0x0 irq 74 ata4: SATA max UDMA/133 cmd 0xFFFFC20000116680 ctl 0x0 bmdma 0x0 irq 74 ata5: SATA max UDMA/133 cmd 0xFFFFC20000116700 ctl 0x0 bmdma 0x0 irq 74 ata6: SATA max UDMA/133 cmd 0xFFFFC20000116780 ctl 0x0 bmdma 0x0 irq 74 scsi0 : ahci ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: ATA-7, max UDMA/133, 488397168 sectors: LBA48 ata1.00: configured for UDMA/133 scsi1 : ahci ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata2.00: ATA-7, max UDMA/133, 488397168 sectors: LBA48 ata2.00: configured for UDMA/133 scsi2 : ahci ... Vendor: ATA Model: ST3250620NS Rev: n/a Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write through SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write through sda: sda1 sda2 sda3 < sda5 > sd 0:0:0:0: Attached scsi disk sda Vendor: ATA Model: ST3250620NS Rev: n/a Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdb: 488397168 512-byte hdwr sectors (250059 MB) sdb: Write Protect is off sdb: Mode Sense: 00 3a 00 00 SCSI device sdb: drive cache: write through SCSI device sdb: 488397168 512-byte hdwr sectors (250059 MB) sdb: Write Protect is off sdb: Mode Sense: 00 3a 00 00 SCSI device sdb: drive cache: write through sdb: sdb1 sdb2 sdb3 < sdb5 > sd 1:0:0:0: Attached scsi disk sdb .... ===dmesg=== $ cat /sys/block/sda/queue/scheduler noop [anticipatory] deadline cfq cgf который по умолчанию, так там ваще.... заметные тормоза мыли на глаз, сидишь в ssh сессии, и видно, в какой-то момент системы замирает... т.е. удаленая стороно не отвечает в ссесию... в это время делаешь новую ссесию - тоже все глухо... а пинги ходят на ура. (т.е. ядро и сетевая подсистема видимо реагируют. а то что надо с дисковой подсситемы получить .....) какие еще шедулеры можно безбоязно попробовать? а по какие криетриям видно, что запись происходит ооооччччееенннььь медлено? -- С уважением, Макс.
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