On Wed, May 8, 2013 at 6:16 PM, Christopher Schultz < ch...@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Charles, > > On 5/8/13 1:57 PM, Charles Richard wrote: > > I appreciate the friendly feedback! How do I show a lock? I don't > > see any threads that have a "BLOCKED" status. I do get this when I > > do a grep: > > > > [root@web01 stacks]# grep locked tomcat1_20130507_14\:38.stack | wc > > -l 154 > > > > My connection pool is 150 and I do see 150 locks in the following > > type scenario which has a "locked": > > > > "TP-Processor416" daemon prio=10 tid=0x00002aff2939a800 nid=0x5ae7 > > in Object.wait() [0x00002aff632ae000] java.lang.Thread.State: > > WAITING (on object monitor) at java.lang.Object.wait(Native > > Method) - waiting on <0x00002afe240fbc58> (a > > com.mchange.v2.resourcepool.BasicResourcePool) > > This only tells you the identity of the object monitor (the "lock"). > What you are missing is the identities of the object monitors already > held by this and other threads. I believe your thread dump does not > include any of these. > > IIRC, the Oracle JVM can (when prodded) produce a thread dump which > includes deadlock detection and will show the suspected-deadlocked > threads, the held lock ids and what threads are waiting on. > > Perhaps you can get a "better" thread dump via other means? How did > you get the one you have now? > > - -chris > I got the current dump by using jstack which is in my 1.6.0_22 jdk binaries. How should i produce this stack? What would a dump showing a suspected-deadlocked threads look like? Thanks! Cheers, Charles -----BEGIN PGP SIGNATURE----- > Version: GnuPG/MacGPG2 v2.0.17 (Darwin) > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBCAAGBQJRisCwAAoJEBzwKT+lPKRYmlMP/35U86kwWXyYPVC3ejSTvF0O > OHnn+RDbNLX2Qt1s4ALEUBl7rU4fu3hOEaG04DVzs17Ni/fongDzBhEdWyzcSGui > JeJzAyoZBj2bc86mLf5NraAZRiZakdrqr6iWaQt1bhgKde5TsoP1qn4+5oPsYzEw > HhOveggibKaLZkhheZZFAvFFrbpFM7IblrYyA7905b7Q2ZluvRdqEkcm5NR9LxOJ > Zdrn3e3v0vV9rpTDtvi+nHlHHtj7VpJkaOCLQH8ra2az9Nq/ZXqhLROEdsA5hYJt > PjUooQYYCq09J0yi3uujBzOyiC3hosSoo02dclknil4Ib6SlGfejsN0eUY3IAPoY > By/AZ+ybz9oa8ts52NwARpaQvoINzNnFWE5Gq9jU0RqEUdLP0ociRrbWsCb8UjFk > jmLRU5lYG287MwviKtYHPilR/Dt4fD9YAab5tuP+v5XULFEbN5INtFcnYiWpNLxm > MCAvORVyYrWAgrRXR9JNtN8ZouX/CygHiV/312JKJwCnj34TqrYYXjhDaGqUq368 > 4QH5ZkJYAsEUa53W6zsxp0PS1EkKjgQ4LFqgFqmZdA/c874tF9WjtO2obWyIqHan > WQkNDUTW1pahp+4v+Fyh7QfwqbO8PVtg2lqWNfkHK1gEkIAF30/Wo3IrbTtfUYJu > 7yoQIzW3qJRRdVJ8Id3S > =Xkzn > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
