Messages in this thread | | | Date | Sun, 14 Mar 2004 12:57:27 +0100 | From | Pawel Dziekonski <> | Subject | [2.6.4] IDE performance drop again |
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hi,
after switching from 2.6.1 to 2.6.4 I see IDE performance drop again.
hdparm /dev/hda
/dev/hda: multcount = 1 (on) IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 8192 (on) geometry = 26310/16/63, sectors = 26520480, start = 0
under 2.4.x and 2.6.1 i had about 40 MB/s in hdparm -ft. in 2.6.4 i get at most 26 MB/s. changing readahead does not help. i'm using ac scheduler.
lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 02) 00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22) 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE (rev 10) 00:07.2 USB Controller: VIA Technologies, Inc. USB (rev 10) 00:07.3 USB Controller: VIA Technologies, Inc. USB (rev 10) 00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30) 00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 20) 00:0b.0 SCSI storage controller: Tekram Technology Co.,Ltd. TRM-S1040 (rev 01) 00:11.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 02) 00:11.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 02) 00:14.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2)
/proc/interrupts CPU0 0: 1602384 XT-PIC timer 1: 4247 XT-PIC i8042 2: 0 XT-PIC cascade 8: 6328 XT-PIC rtc 9: 0 XT-PIC acpi 10: 194179 XT-PIC uhci_hcd, uhci_hcd, eth0 11: 0 XT-PIC VIA686A 12: 100786 XT-PIC nvidia, bttv0 14: 27087 XT-PIC ide0 15: 5 XT-PIC ide1 NMI: 0 LOC: 1598373 ERR: 260588 MIS: 0
regards, P
PS. I'm not subscribed, so please CC me your replies. thanks. -- Pawel Dziekonski <pawel.dziekonski|@|pwr.wroc.pl>, KDM WCSS avatar:0:0: Wroclaw Networking & Supercomputing Center, HPC Department -> See message headers for privacy policy info. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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