Maxim Sobolev wrote: > Poul-Henning Kamp wrote: > >> In message <41BB0305.7000206_at_portaone.com>, Maxim Sobolev writes: >> >>> Hi Poul, >>> >>> I have noticed that GBDE write performance is very low, even on >>> modest hardware (3.2 P4 with 1MB cache and 7200 IDE HDD): >> >> >> >> Which logical sectorsize did you use ? > > > 2KB. Little more investigation revealed that the problem was due to disabled write cache in ata(4). It would be interesting to compare FreeBSD behaviour to behaviour of other operating systems in such situation, since the drop of sequental writing performance in the case of 8KB blocks and disabled write cache in FreeBSD is about 20x (from more than 20MB/sec to merely 1MB/sec), which doesn't look reasonably to me. -MaximReceived on Mon Dec 13 2004 - 18:22:51 UTC
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