-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 André,
On 1/18/17 8:02 AM, André Warnier (tomcat) wrote: > So what you are saying above, is that the "minSpareThreads" > attribute in a Connector (without Executor) is not really being > ignored. Right. > It is just the "shrinking" part of it that is not being done > anymore, since tomcat 6.0. Is that the correct interpretation ? Well... there isn't any "maxSpareThreads" setting on a <Connector>. So the expectation that e.g. only 10 spare threads would be kept around is an incorrect assumption. There is one such configuration option on <Executor> -- it's actually "maxIdleTime" which is slightly different, but gets the job done. > A different question : how would one go about determining how many > resources /are/ being used by an idle thread ? (or more relevantly, > by a couple of hundred of them) You are using a little memory: stack space for the thread (non-heap), overhead for the thread itself to be managed by the JVM and/or OS, etc. But in terms of CPU usage, the thread may as well not be there at all. > And yet another : Above, you say that "Tomcat starts another 3 > threads in the background". When does that actually happen, in > relation to "3 new connections arrive" ? (or maybe without a direct > relation, on some separate time schedule) The background processor sees that the request for "10 idle threads minimum" is not being fulfilled (only 7 remain! yikes!) and adds 3 new threads to the pool. > I realise that these are probably somewhat pernickety questions, > and maybe without much real-world practical importance. But I > figure that we may as well get to the bottom of this, while we have > your expert attention. Ask away! Especially if it means that you are working on improving the documentation for people who don't have as clear of an understanding. - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJYf6frAAoJEBzwKT+lPKRYa64P/iUEi5AtvZqMsEXQms3awsz7 O+tYWphb7QKy3b7gqP9s5BBD4vjDglm1pNMBlsNAcLtgkq8HcJ9dxuCyw2OtHzwp yVdWmdu2qkr/lBAFuprh6gdSdnE+7Eg4qtSBmbR5sKrD7Xx+LdS1tG8smB8MeIAd 7B4bmYmpx8v1PAh3ylFF4wG7leeMiAZ8RTukyTIvTSezybLRAmBO24KhKQLm23J0 BTb2vmLjSN2UdJyhADXPnlVfCPRoiL3g78dD295qEmvomQXBq5GYlrdMLDlBOzfv z1IZUVCMmdqZ0WGBQWlw+48dRoQ58/Do8V4ML+/500wzZ/0cFuIhGYT/bS12IcS1 B9rQTp9ZxzhCpkZzggO94n3CKWtDGEkwTJ4iDyc4CZMrXjj9NsTnuC7cHVjd2HVC ElDwNV4kgAoHKv4MEe0H7KfG4ejjEPSZSWJnbt1dhhtB48i87bSQpZ4LmUp/Qm6w 2E0T/1xx5z/AQ7YYsLs2J1hnvXk5e7s4V+bDLih3xsfMdC7Qw3P2oSXLKC1tz2LO JD3vEzOttiOl5fVty9A64/cR8x9afYlYhbs8aHGammj+pHnBap6ZrrU25JPx9A4a ezp4zk6oxrJ7N/qaAFx75DgrtZuTYVHqfaUq+J/g8Qh2NQkA2Qs/pEGdWzhcmt5E SbEK/5qerEo3WxGtB4vR =Nkff -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
