We've set up a Cyrus 2.0.7 server on a Sun Ultra 220R (dual cpu) and during stress
testing found a problem that seems to be related to Berkeley-DB (both
versions 3.0.55 and 3.1.17).
The stress test consists of 4 clients on 4 hosts connecting as the cyrus admin
user to 4 different user.INBOX mailboxes. All clients then
*upload* 50 Megs of messages while creating a mailbox hierarchy.
The core of the client is following perl script:
$folder = new Mail::Folder('AUTODETECT', $filename) or return;
$imap->create($mailbox);
$imap->setacl($mailbox, 'cyrus', 'lrswipcda');
$imap->setacl($mailbox, $user, 'lrswipcda');
$imap->select($mailbox);
$num = $folder->first_message();
while ($num != 0) {
$message = $folder->get_message($num);
printf "mailbox %s message %d\r", $mailbox, $num if $verbose;
$message = $folder->get_message($num);
$imap->append($mailbox, $message->as_string);
$num = $folder->next_message($num);
}
print "\n" if $verbose;
$imap->DELETEACL("MAILBOX", $mailbox, "cyrus");
$folder->close;
This code snippet sits in a loop over all "classic" mailboxes for a user
on the client. The code is actually part of a migration tool.
The problem is: Cyrus hangs after a certain time (the period it will
function correctly is rather unpredictable)
The logfile shows the following
Dec 13 17:25:50 mail imapd[12745]: [ID 866726 local6.error] DBERROR db3: 3 lockers
Dec 13 17:25:50 mail imapd[12745]: [ID 866726 local6.error] DBERROR db3: Aborting
locker 800000a0
Dec 13 17:25:50 mail imapd[12748]: [ID 520099 local6.debug] aborting txn 2147483808l
Dec 13 17:25:50 mail imapd[12748]: [ID 866726 local6.error] DBERROR db3: 2 lockers
Dec 13 17:25:50 mail imapd[12748]: [ID 654676 local6.debug] starting txn 2147483810l
Dec 13 17:25:50 mail imapd[12746]: [ID 866726 local6.error] DBERROR db3: 3 lockers
Dec 13 17:25:50 mail imapd[12746]: [ID 866726 local6.error] DBERROR db3: Aborting
locker 800000a1
Dec 13 17:25:50 mail imapd[12746]: [ID 520099 local6.debug] aborting txn 2147483809l
Dec 13 17:25:50 mail imapd[12745]: [ID 976968 local6.debug] committing txn 2147483807l
Dec 13 17:25:50 mail imapd[12748]: [ID 866726 local6.error] DBERROR db3: 3 lockers
Dec 13 17:25:50 mail imapd[12747]: [ID 866726 local6.error] DBERROR db3: 3 lockers
Dec 13 17:25:50 mail imapd[12747]: [ID 654676 local6.debug] starting txn 2147483811l
Dec 13 17:25:50 mail imapd[12745]: [ID 654676 local6.debug] starting txn 2147483812l
Has anybody seen this problem before? Or have a pointer where to look?
Regards,
Gert
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Gert Poletiek [EMAIL PROTECTED] Phone: +31 20 525 7503/7463
Computer and Network Group Faculty of Science
University of Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, The Netherlands
