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Hi everyone, I'm running Cyrus 2.3.14 on a VPS (Gentoo), and have been for a number of years now. All was well until last night when performance went down the tubes and I started seeing high I/O wait times. I'm pretty sure this is a problem on the hosting end, but in trying to diagnose the source of the I/O congestion, the closest I could come to answer was that ctl_cyrusdb is reading/writing about 15-20 4096b blocks (from the /var/imap/db/* files) per second. This amounts to read/write throughput in the 250kb/second range. Is this "normal" behaviour? I never noticed before, but it's the only thing I see that is constantly generating I/O... Take care, Anthony |
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