[ risk @ 19.05.2005. 09:54 ] @
kupio sam novi harddisk od 250GB PATA i stavio ga na kucni server na kome je FreeBSD. Problem je sto je jako spor kad radi sa diskom ~4Mbyte/sec. Iskoriscenje procesora je u tim slucajevima konstantno 100%. machina je celeron 466 sa 160mb rama. kad kopiram kroz mrezu (samba,ftp, dve razlicite klijent konfiguracije) transfer ide oko 3.5-4 MB/s i tada mi system jede preko 50% procesora. Transfer ide brzo 10MB/s dok ne napuni buffer-e tj. ram i onda se stabilizuje na gore pomenutim brzinama (znaci da je zagusenje u HDD io podsistemu) evo nekih informacija, samo sam ubacio crtice "-" da bi se lakse citalo. cemu sluzi onaj dole "dma queued" ? da nije zbog toga ? sta da radim sa tim? Code: machina# dmesg | grep -i maxtor ad6: 239372MB <Maxtor 7Y250P0/YAR41BW0> [486344/16/63] at ata3-master UDMA100 ----------------------------------------------------------------- machina# dmesg | grep -i ata3 ata3: channel #1 on atapci1 ad6: 239372MB <Maxtor 7Y250P0/YAR41BW0> [486344/16/63] at ata3-master UDMA100 ----------------------------------------------------------------- machina# dmesg | grep -i atapci1 atapci1: <CMD 649 UDMA100 controller> port 0xc000-0xc00f,0xbc00-0xbc03,0xb800-0xb807,0xb400-0xb403,0xb000-0xb007 irq 12 at device 15.0 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 ----------------------------------------------------------------- machina# sysctl hw.ata hw.ata.ata_dma: 1 hw.ata.wc: 1 hw.ata.atapi_dma: 1 ----------------------------------------------------------------- machina# atacontrol info 3 Master: ad6 <Maxtor 7Y250P0/YAR41BW0> ATA/ATAPI revision 7 Slave: no device present ----------------------------------------------------------------- machina# atacontrol mode 3 Master = UDMA100 Slave = BIOSPIO ----------------------------------------------------------------- machina# atacontrol cap 3 0 ATA channel 3, Master, device ad6: Protocol ATA/ATAPI revision 7 device model Maxtor 7Y250P0 serial number Y64KZDXE firmware revision YAR41BW0 cylinders 16383 heads 16 sectors/track 63 lba supported 268435455 sectors lba48 supported 490234752 sectors dma supported overlap not supported Feature Support Enable Value Vendor write cache yes yes read ahead yes yes dma queued no no 0/0x00 SMART yes yes microcode download yes yes security yes no power management yes yes advanced power management yes no 0/0x00 automatic acoustic management yes yes 254/0xFE 192/0xC0 |