Bug #16695: radosgw Consumes too much CPU time to synchronize metadata or data between multisite - rgw - Ceph

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Bug #16695

closed

radosgw Consumes too much CPU time to synchronize metadata or data between multisite

Added by bajie white almost 8 years ago. Updated about 7 years ago.

Status:

Resolved

Priority:

High

Assignee:

Casey Bodley

Target version:

% Done:

Source:

other

Tags:

Backport:

jewel

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

Ceph - v10.2.0, Ceph - v10.2.1, Ceph - v10.2.2, Ceph - v10.2.3

ceph-qa-suite:

rgw

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

In the 10.2.0 version, the multisite function is added. I configure two sites int a realm : one is the master zone in the master zonegorup, the other is the master zone in the second zonegroup. Then I start one radosgw for each zone. After I create a user in the master zone, I find the radosgw consume 100% cpu time with the command top.

Related issues 3 (0 open — 3 closed)

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Updated by bajie white almost 8 years ago

I find the problem is the function do_curl_wait. The function call curl_multi_wait in do_curl_wait will be waken because the pipe wait_fd is always readable. I find the wait_fd will never be changed in curl_multi_wait. So the pipe wait_fd will never be read.

If the wait_fd is set O_NONBLOCK when created in RGWHTTPManager::set_threaded and read in do_curl_wait no matter what wait_fd.revents is, the bug can be fixed.

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